[Asterix]

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...

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

Anyone knows, anyone tried it..

[Dazzler]

Gee must be tricky if you can't find it 

[rustynutz]

I'm curious to know too as I've been tempted to chuck some of this (or similar) into it.....

[Doggie 1]

I'm curious to know too as I've been tempted to chuck some of this (or similar) into it.....

Good stuff that Nulon. 

[rustynutz]

Have you tried it, Dave?

I've used "molly" before but i've never tried Nulon gearbox additives.... 

[Doggie 1]

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.

[rustynutz]

I've used their engine oil additives with no issues but they have been poo poo'd on here by a few....

[Doggie 1]

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.

[rustynutz]

Yeah, I was talking about the additives too....additives such as this and this... 

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?".

[rustynutz]

I don't know....

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.... 

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.

[Dazzler]

My mechanic at the time used to swear by them.

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

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)

[Doggie 1]

My mechanic at the time used to swear by them.

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

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.

[Dazzler]

 

[rustynutz]

I remember helping my ex boss drop a Holden 308 V8 into one of those many moons ago...

That made a big difference too.....

[Dazzler]

 

[i30niko]

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...

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

Anyone knows, anyone tried it..

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.

[Shambles]

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   Or do they?

[AlanHo]

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.

[Asterix]

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...

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

Anyone knows, anyone tried it..

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.

[Phil №❶]

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.

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!

[rustynutz]

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

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



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)

[Asterix]

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. 

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

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



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. 

[rustynutz]

Cheers...

[Keith]

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?

[Shambles]

Is that bolt that Rusty pointed (three posts back) not there?

[eye30]

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..

[asathorny]

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   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...