i30 Owners Club

THE GARAGE (SERVICE, MAINTENANCE & REPAIR) => GENERAL => Topic started by: Asterix on June 15, 2012, 16:00:53

Title: Help! - Oil change on 5 speed MT
Post by: Asterix on June 15, 2012, 16:00:53
I want to change the gear oil in my 5 speed manual gearbox.

I can find the drain plug, but does anyone know where to fill the new oil on the gearbox... :question:

I have removed the airfilter housing, but I don't see anywhere obvious to fill in the new oil.

Anyone knows, anyone tried it.. :question:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on June 15, 2012, 22:29:12
Gee must be tricky if you can't find it  :Shocked:
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 16, 2012, 01:58:16
I'm curious to know too as I've been tempted to chuck some of this (http://www.nulon.com.au/products/Specialty_Products/Manual_Gearbox_and_Diff_Treatment/) (or similar) into it..... :undecided:

Title: Re: Help! - Oil change on 5 speed MT
Post by: Doggie 1 on June 16, 2012, 02:13:33
I'm curious to know too as I've been tempted to chuck some of this (http://www.nulon.com.au/products/Specialty_Products/Manual_Gearbox_and_Diff_Treatment/) (or similar) into it..... :undecided:


Good stuff that Nulon.  :goodjob2:
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 16, 2012, 02:22:15
Have you tried it, Dave?

I've used "molly" before but i've never tried Nulon gearbox additives....  :undecided:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Doggie 1 on June 16, 2012, 02:30:16
Yes, I have but back in the eighties and I didn't keep the car long enough to get the value.
I've always been a bit of a fan though since they drove that car across Australia in an experiment.
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 16, 2012, 02:38:49
I've used their engine oil additives with no issues but they have been poo poo'd on here by a few.... :undecided:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Doggie 1 on June 16, 2012, 02:43:34
I've never used the oils - it's the additives I'm talking about too.
My mechanic at the time used to swear by them.
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 16, 2012, 02:52:43
Yeah, I was talking about the additives too....additives such as this (http://www.nulon.com.au/products/Engine_Treatments/Long_Term_Engine_Treatment/) and this (http://www.nulon.com.au/products/Engine_Treatments/E20_Engine_Treatment/)...  :)
Title: Re: Help! - Oil change on 5 speed MT
Post by: Pip on June 16, 2012, 02:56:49
I remain cautious. PTFE is otherwise known as teflon and is related to the stuff used on cooking pans. Its use in engine oil has been shown to be of little use and that engine in the TV ad was pretty much totaled but gear oil running at much lower temperature might be something else.

I do ask though: "Why don't the brand names use it?".
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 16, 2012, 03:49:36
I don't know.... :undecided:

I guess, to a certain extent, the same could be said of "Moly" (molybdenum disulfide)......That has fantastic lubricating properties but (as far as I'm aware) it doesn't seem to be used in mainstream oils....  :undecided:

Title: Re: Help! - Oil change on 5 speed MT
Post by: Pip on June 16, 2012, 04:35:10
Yes, agree. I think the move towards low SAPS oil for pollution (not lubricating) reasons has pushed Moly out of the picture. I always used it for engine rebuilds (in my youth).

It really is hard to know. :confused:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on June 16, 2012, 04:58:14
My mechanic at the time used to swear by them.

Your mechanic saying "oh that bloody stuff" doesn't mean it is good  :lol:

I had an LC Torana 4 on the floor with the lesser Opal Gearbox and my mechanic put something in that and it made a big difference (but that was around 35 years ago so not sure what it was)
Title: Re: Help! - Oil change on 5 speed MT
Post by: Doggie 1 on June 16, 2012, 06:03:14
My mechanic at the time used to swear by them.

Your mechanic saying "oh that bloody stuff" doesn't mean it is good  :lol:

I had an LC Torana 4 on the floor with the lesser Opal Gearbox and my mechanic put something in that and it made a big difference (but that was around 35 years ago so not sure what it was)

It was probably an engine.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on June 16, 2012, 06:49:27
 :P
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 16, 2012, 09:26:34
I remember helping my ex boss drop a Holden 308 V8 into one of those many moons ago...

That made a big difference too..... :D
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on June 16, 2012, 10:13:13
 :mrgreen:
Title: Re: Help! - Oil change on 5 speed MT
Post by: i30niko on August 16, 2012, 07:56:31
I want to change the gear oil in my 5 speed manual gearbox.

I can find the drain plug, but does anyone know where to fill the new oil on the gearbox... :question:

I have removed the airfilter housing, but I don't see anywhere obvious to fill in the new oil.

Anyone knows, anyone tried it.. :question:

I always had filled the new oil from the dipstick? I am assuming manual vehicles have one? (Mine is an auto). You just have to insert a very thin long funnel.....

Some cars like ford falcon AU do not have dipsticks, and it gets quite tricky. Frankly I would not do it myself.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Shambles on August 16, 2012, 08:22:11
I want to change the gear oil in my 5 speed manual gearbox.

I always had filled the new oil from the dipstick?

Never heard of a gearbox having a dipstick :eek:  Or do they?
Title: Re: Help! - Oil change on 5 speed MT
Post by: AlanHo on August 16, 2012, 08:36:43
All these third party oil additives come under the category "snake oil remedy".

If they really worked - the major oil companies would be the first to use them.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Asterix on August 16, 2012, 19:22:53
I want to change the gear oil in my 5 speed manual gearbox.

I can find the drain plug, but does anyone know where to fill the new oil on the gearbox... :question:

I have removed the airfilter housing, but I don't see anywhere obvious to fill in the new oil.

Anyone knows, anyone tried it.. :question:

I always had filled the new oil from the dipstick? I am assuming manual vehicles have one? (Mine is an auto). You just have to insert a very thin long funnel.....

Some cars like ford falcon AU do not have dipsticks, and it gets quite tricky. Frankly I would not do it myself.

I have never seen a manuel gearbox with a dipstick, only auto's.

I have changed oil on man gearboxes before, but at those I was not uncertain which plugs were drain etc.

I have asked my local Hyundai dealer, he says I should fill the gearbox by unscrewing the 17mm bolt (head) in the front of the gearbox, but by all means DO NOT unscrew the 14mm bolt. The 14mm bolt keeps a gearwheel in place inside the box, and if unscrewed, the gearbox will need to be taken of and taken apart to be able to mount the gearwheel again.

I haven't changed the gearoil yet, wanted to do it before the summervacation, but didn't had the time.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Phil №❶ on August 17, 2012, 10:37:45
Assuming the oil has been drained completely and you have the correct volume of oil for your model from an official workshop manual, measure out the volume into a container & fill the gearbox wherever the filler is. Shouldn't need a dipstick.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Pip on August 17, 2012, 13:37:48
For the gearboxes I have filled (a long time ago) the filler hole (about halfway up on the side) was also the overflow hole. Top up with a funnel and tube till it overflowed; refit bolt. Done!
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on August 17, 2012, 18:04:35
Found this crappy picture of where the filler bolt is situated.

Hope it's of some help cos' I'm none the wiser.... :undecided:

(http://i4.photobucket.com/albums/y150/rustynutz69/OilFillerPlug.jpg)

Both drain and filler plug torque settings are 60 - 80 Nm.(6.0 - 8.0 kgf.m, 43.4 - 57.8 lb-ft)
Standard oil is SAE 75W/85 , API GL-4
Oil Capacity is 2.0 litre (2.1 US qt, 1.76 Imp qt)
Title: Re: Help! - Oil change on 5 speed MT
Post by: Asterix on August 17, 2012, 19:43:10
For the gearboxes I have filled (a long time ago) the filler hole (about halfway up on the side) was also the overflow hole. Top up with a funnel and tube till it overflowed; refit bolt. Done!

Just the way I'm used to do it as well.  :razz:

Found this crappy picture of where the filler bolt is situated.

Hope it's of some help cos' I'm none the wiser.... :undecided:

(http://i4.photobucket.com/albums/y150/rustynutz69/OilFillerPlug.jpg)

Both drain and filler plug torque settings are 60 - 80 Nm.(6.0 - 8.0 kgf.m, 43.4 - 57.8 lb-ft)
Standard oil is SAE 75W/85 , API GL-4
Oil Capacity is 2.0 litre (2.1 US qt, 1.76 Imp qt)

Thanks for the pic, Rusty. Will take a look under the gearbox to see if it looks anything like that.  :D
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on August 18, 2012, 02:11:20
Cheers... :D
Title: Re: Help! - Oil change on 5 speed MT
Post by: Keith on June 08, 2013, 18:13:15
Well I wanted to change the gearbox oil today (Saturday June 8th) but couldn't find the oil filler. Really miffed and I suspect that as Hyundai say filled for life I've now convinced myself that there is a blank plug where the filler would be. Anyone know any different?
Title: Re: Help! - Oil change on 5 speed MT
Post by: Shambles on June 08, 2013, 18:24:05
Is that bolt that Rusty pointed (three posts back) not there?

(http://i4.photobucket.com/albums/y150/rustynutz69/OilFillerPlug.jpg)
Title: Re: Help! - Oil change on 5 speed MT
Post by: eye30 on June 08, 2013, 18:24:47
Really miffed and I suspect that as Hyundai say filled for life I've now convinced myself that there is a blank plug where the filler would be. Anyone know any different?

Just checked the service schedule i got last monday when i picked my car up after the first service and it has at year 2 service but not again until the year 12 service - manual gearbox oil level - check.

Does this help you keith..
Title: Re: Help! - Oil change on 5 speed MT
Post by: asathorny on June 08, 2013, 18:57:45
I want to change the gear oil in my 5 speed manual gearbox.

I always had filled the new oil from the dipstick?

Never heard of a gearbox having a dipstick :eek:  Or do they?

Me neither, most gearboxes have a nut half way up the side...  The Boxter has a neat overflow system (but you need something to pump the oil in with) when it overflows, job done, well I say job done.  You have to mess about going  through the triptronic gears then do a refill...    :Shocked: :Shocked:

Title: Re: Help! - Oil change on 5 speed MT
Post by: Keith on June 08, 2013, 19:15:32
Is that bolt that Rusty pointed (three posts back) not there?

(http://i4.photobucket.com/albums/y150/rustynutz69/OilFillerPlug.jpg)

I saw Rustys post Daz, but I've seen mention of 17mm nuts, I can find one that might be the one but trouble is there is also mention of a "don't touch this bolt" as it secures something in the gear cluster... That drawing isn't much help really a photo would be better, but the fact that there is little about the subject sort of re-enforces my feeling that there is no Top-up bolt, just glad I checked before I drained the old stuff out....
Title: Re: Help! - Oil change on 5 speed MT
Post by: Keith on June 08, 2013, 19:22:44
Really miffed and I suspect that as Hyundai say filled for life I've now convinced myself that there is a blank plug where the filler would be. Anyone know any different?

Just checked the service schedule i got last monday when i picked my car up after the first service and it has at year 2 service but not again until the year 12 service - manual gearbox oil level - check.

Does this help you keith..

Well thanks for taking a peek but it kind of indicates it can be checked doesn't it, I now have 2 Ltrs of gearbox oil sat on my shelf...
Title: Re: Help! - Oil change on 5 speed MT
Post by: Hati on June 08, 2013, 21:05:59
Looking at the drawing, it makes me think the gearbox is on a table set on the clutch side. So you would be looking for that bolt in a horizontal position when fittedr to the engine.


The gearboxes I tinkered with all had side fillers set at a height where if the oil started to come out during refill, you had the right amount in the casing.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Keith on June 08, 2013, 22:57:12
Agreed Hati & ditto, I always filled to overflow on all previous cars, handbook specifies 1.9 litres for a 1.6 petrol 5 speed manual shift, quite specific as the diesel is specc'd for 2 litres. Piece of cake to do if I can find a filler 'ole! :neutral:
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 09, 2013, 14:53:40
This might be helpful.... :)

Quote
Quote from Ray G (Hyundai-Forums.com)

According to Hyundai they are 'filled for life', whatever that means, in my opinion with fresh oil it's going to 'live' a lot longer. The correct spec GL4 oil is listed in your owners book, from memory it's 70W80, or thereabouts. The drain and fill plugs are both 17MM across the head flat bolts, the only ones on the transmission. The common drain bolt is near the bottom of the final drive (diff) casing facing the left hand wheel. The fill bolt from memory is about half way up on the radiator side of the housing. You should drain 2.5 Litres of grey goop out if it still has standard Hyundai oil in it. The Grey is a friction modifier/load stabiliser Hyundai factory add. You WILL fill with 2.5 Litres of oil ONLY, don't fill to the plug level, just add exactly the amount in the owners book. It really is an easy job, once you look under the car the two plugs are obvious due to their size. Cheers.
http://www.hyundai-forums.com/197-i30-elantra-touring-forum/153315-i30-gearbox-top-up.html (http://www.hyundai-forums.com/197-i30-elantra-touring-forum/153315-i30-gearbox-top-up.html)
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on June 09, 2013, 15:08:14
Probably not a lot of help but it does have torque settings etc... :undecided:

http://netload.in/dateitsgCGE2fPq/ChangingTransmissionOil.pdf.htm (http://netload.in/dateitsgCGE2fPq/ChangingTransmissionOil.pdf.htm)
Title: Re: Help! - Oil change on 5 speed MT
Post by: Keith on June 09, 2013, 18:24:48
Yep I saw all that and read it a few tea Rusty just to be sure I wasn't missing something. I serviced a 1.4 TDI VW Polo today and the drain & fill points were perfectly obvious on that.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Paolo5 on June 10, 2013, 08:00:48
Well I wanted to change the gearbox oil today (Saturday June 8th) but couldn't find the oil filler. Really miffed and I suspect that as Hyundai say filled for life I've now convinced myself that there is a blank plug where the filler would be. Anyone know any different?

Hi Keith,
I have changed the oil in the manual gearbox of my 2010 diesel. The picture a few entries back looks right. It's there! Look for a bolt with a flat washer underneath its head. From memory there are only 2 like that in the same proximity as eachother....the drain bolt and the inspection bolt.

I put
http://www.liqui-moly.us/liquimoly/produktdb.nsf/id/us_2019.html?Opendocument&land=US (http://www.liqui-moly.us/liquimoly/produktdb.nsf/id/us_2019.html?Opendocument&land=US)
in mine.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on June 10, 2013, 22:31:45
I put
http://www.liqui-moly.us/liquimoly/produktdb.nsf/id/us_2019.html?Opendocument&land=US (http://www.liqui-moly.us/liquimoly/produktdb.nsf/id/us_2019.html?Opendocument&land=US)
in mine.

..and the $64,000 question, did it make much difference to the feel of the box?
Title: Re: Help! - Oil change on 5 speed MT
Post by: Paolo5 on June 10, 2013, 23:43:23
I put
http://www.liqui-moly.us/liquimoly/produktdb.nsf/id/us_2019.html?Opendocument&land=US (http://www.liqui-moly.us/liquimoly/produktdb.nsf/id/us_2019.html?Opendocument&land=US)
in mine.

..and the $64,000 question, did it make much difference to the feel of the box?

Good question..
the gearbox was annoyingly notchy when engaging 1st and 2nd ....especially when cold...until about 30,000km. That was about the time that I did the oil change and added the Moly product. The shift is now MUCH better. The car has now done 46,000km. Was it the km or the Moly (or both)?
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on June 11, 2013, 12:14:53
Thanks, maybe i should have called it the 46,000 question :lol:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Just Rick on June 11, 2013, 12:27:03
My mechanic at the time used to swear by them.

Your mechanic saying "oh that bloody stuff" doesn't mean it is good  :lol:

I had an LC Torana 4 on the floor with the lesser Opal Gearbox and my mechanic put something in that and it made a big difference (but that was around 35 years ago so not sure what it was)
Probably STP Dazz that was good stuff in it's day,much like Nulon today
Title: Re: Help! - Oil change on 5 speed MT
Post by: Asterix on October 06, 2013, 19:08:15
Found this crappy picture of where the filler bolt is situated.

Hope it's of some help cos' I'm none the wiser.... :undecided:

(http://i4.photobucket.com/albums/y150/rustynutz69/OilFillerPlug.jpg)

Both drain and filler plug torque settings are 60 - 80 Nm.(6.0 - 8.0 kgf.m, 43.4 - 57.8 lb-ft)
Standard oil is SAE 75W/85 , API GL-4
Oil Capacity is 2.0 litre (2.1 US qt, 1.76 Imp qt)

So, finally I got to change the gear oil. The drainplug is obvious at the bottom of the gearbox and the filler plug is just as Rusty's pic above.

The car have now done 192000 km and I thought it would be a good idea with new gearoil. The i30 manual says that if the car is used for towing, the gearoil should be changed every 100000 km. (I bought the car with 126000 on the odo).

I have no problems with the gearshift in generel, but on the cold winter mornings when temperatures drop below 0ºC then the shifts can be notchy the first few km's. I hope this will be improved. We are not at freezing temperatures yet, there's about 5-10ºC in the morning when I'm off to work at 06.15.

Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on October 06, 2013, 21:42:38
Thanks Henning, be interested to hear if any difference in the feel of the change. :cool:
Title: Re: Help! - Oil change on 5 speed MT
Post by: rustynutz on October 07, 2013, 01:36:46
 :whsaid:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Keith on October 07, 2013, 06:03:47
Glad this got resurrected as I'd forgotten to update.
I let a bit run out of the drain hole and the oil is golden and clear, the noise I suspected was gear related turned out to be a tyre issue so all is good!  :happydance:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Just Rick on October 07, 2013, 13:49:44
Thanks Henning, be interested to hear if any difference in the feel of the change. :cool:
since this has been resurrected(thanks,as in my manual Cyrils next service is 90,000 and gear oil is to be changed) if anyone remembers a while back,I was complaining Bruce was sticking in 1,3,5 gear,then Hy couldn't find an issue so they said,but they did say they drained and replaced the oild and since we have had this done the gearbox movement is so much better.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on October 07, 2013, 19:56:33
Thanks Henning, be interested to hear if any difference in the feel of the change. :cool:
since this has been resurrected(thanks,as in my manual Cyrils next service is 90,000 and gear oil is to be changed) if anyone remembers a while back,I was complaining Bruce was sticking in 1,3,5 gear,then Hy couldn't find an issue so they said,but they did say they drained and replaced the oild and since we have had this done the gearbox movement is so much better.

 :drinks:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Asterix on October 07, 2013, 20:02:59
Thanks Henning, be interested to hear if any difference in the feel of the change. :cool:

Well, didn't expect any improvement on a day like this, 10ºC in the morning, 18ºC in the afternoon when driving home from work, but must admit I felt a more smooth shift.  :happydance:

Still waiting to see if better when the frost sets in.....
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on October 07, 2013, 20:03:40
Thanks Henning, be interested to hear if any difference in the feel of the change. :cool:

Well, didn't expect any improvement on a day like this, 10ºC in the morning, 18ºC in the afternoon when driving home from work, but must admit I felt a more smooth shift.  :happydance:

Still waiting to see if better when the frost sets in.....

 :hatoff:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Doggie 1 on October 21, 2013, 12:06:43
I will be interested to hear as my mechanic has suggested putting a higher quality gear oil in.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Asterix on October 21, 2013, 18:38:28
I will be interested to hear as my mechanic has suggested putting a higher quality gear oil in.

Dave, I doubt you will gain anything from that as your car have only done 40.000 km. :question: I think you should be able to do at least 100.000 km before changing, considdering the gearoil is fill-for-life.

When the gear oil was drained, I was surprised to see that the oil was actually much more clean than expected, and it didn't have that rotten smell like used gear oil often have. I don't think the factory filled oil is as bad quality as feared.  ;)

I still enjoy the better and more smooth gearshift and is looking forward to see how it perform when the frost arrives, but so far we have very nice temperatures at + 5-10 ºC at nights.  :happydance:

Will keep you updated....
Title: Re: Help! - Oil change on 5 speed MT
Post by: Asterix on November 26, 2013, 17:19:13
So, the frosty nights have arrived. The last to mornings when going to work, the temperature was -7ºC

Happy to say the gearshift was very smooth compared to last winter where it was kind of notchy the first minutes.

The gear oil change have definitely been worth the $$   :happydance:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Phil №❶ on November 26, 2013, 20:57:50
Excellent news, hope it's as good in another -20 Deg  :Shocked:
Title: Re: Help! - Oil change on 5 speed MT
Post by: sundiz on January 28, 2015, 15:48:50
I changed the transmission oil when I bought my (used) car. That time my car had been driven around 60 000km. There were nothing wrong with the behaviour of the transmission. I usually change the transmission oils every 2-3 years depending how much I drive. Usually something between 40 000-50 000km. Some might say I change them too often, but the oil is cheaper than fixing a broken transmission. And it's easy job to do. Even the manual says that if you drive in demanding environment/situations you should change the oil more often. I consider the environment to be demanding where I live.

After 6 years and somewhat 60 000km the oil was in quite good condition. It was dirty when compared to the new oil, but I doubt I used the same oil, so there had to be some color difference just because of the different oil brands. But you could see that the old oil was "used". I am now using Castrol Multivehicle 75W-90 API GL-4 oil. That seems to work very well in low temps. I can't notice a difference in the behaviour of the shifter even at teps below -20*C. Smooth movement like it was summertime.
Title: Re: Help! - Oil change on 5 speed MT
Post by: Dazzler on January 29, 2015, 10:18:43
 :ta: sundiz  :Agoodpost:
Title: Re: Help! - Oil change on 5 speed MT
Post by: Paolo5 on December 20, 2015, 08:47:11
An update...


My 2010 diesel has now (finally)  reached 69,000km. The gearbox is finally silky-smooth.....I swear by Liqui Moly products....talk about a lengthy bedding-in time!

Mind you....still on original Hankooks...no complaint there!
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