[CBF]

Wife owns a 2009 i30 2.0l SLX petrol.  It was bought new in December 2010.  After 1000km it developed a tick in the motor.  She bought it to Hyundai's attention at 1 st service.  Hyundai said it was normal and would go away after the 1st oil change at 7500km.  This didn't solve the problem and at around 9500km during winter the motor developed a loud rattle when initially started, which slowly faded to a loud tick over about 10 seconds.  The car was taken in and the problem was piston slap.  They told us that the wrong size pistons were placed in it at the factory, sounded far fetched to me.  They showed me the motor and the teflon coating on the sides of the pistons was scored, bore was slighly marked.  They replaced the whole motor unit, very happy with the service.  To get the engine back in service spec the run in oil was changed at odometer reading 15000km (5,000km).  No oil useage in 1st 5000km, prior to service.  At 18000km I noticed the motor had used 500ml of oil, which Hyundai topped up.  Advised us to do 4000km and bring back in.  Used another 500ml for 4000km.  Vehicle has now covered 22000km, new motor 12000km.  They now are conducting an oil consumption test over 4000km @ 1k intervals.  Hyundai say the car industry accepts a general useage tolerance of 1l of oil per 1600km, which are crazy numbers.   Anyway they reckon this time by changing the run in oil early the cylinders may have glazed.  They have admitted that the early oil change may have caused the glazing.  Sounds crazy to me. Were hitting them up for a new car, but they won't budge.  I can't seem to find any inherent problems like this.   I've done a bit of research on the net.  What seems to be happening, and I'm not sure, is the blow-by is creating pressure in the crankcase and pushing the oil up the bleeder hose and into the inlet manifold.  I'm presuming somewhere around the MAF.  It has no oil leaks, and is not blowing smoke.  I'm presuming any oil would catch in the catalytic convertor.  The car is extremely sluggish, especially on hills, doesn't seem to have much torque.  She previously owned a 1997 Excel and it was a great little car.   Anyone else experience this problem.
Cheers

[Phil №❶]

The old rule used to be 1 pint of oil per 1k miles so that would roughly convert to 500mls / 1600 kms. Their figure is a bit on the high side. It is not possible to have high oil consumption without some evidence of oil combustion from the exhaust. The cat converter only converts carbon monoxide to carbon dioxide & will not stop oil. The converter works at very high temperatures to enable the catalytic reaction to occur. If oil were collecting in there you would have a fire situation developing quite rapidly. So where is the oil going 

[CBF]

Thanks for the reply.   I was told by a mechanic that a certain amount of oil can accumulate in the convertor and will eventually clog it up, and can ignite.  Any ideas why it is using oil.  500ml to do average of 3500k seems excessive to me in relatively new car.

[Dazzler]

Hi CBF .. Sorry to hear of your problems.. I wouldn't be happy with that level of oil use. Can only think of one other similar oil use issue on the site but not sure who it was 

[Phil №❶]

CBF

Not sure of your understanding of engines and certainly no offence meant. All engines will use oil. The two significant areas where oil is consumed is on the exhaust valve stems and the cylinder bores.

The valves stems have to be a close fit where they pass through the valve guides. Lubrication is heavily applied by the oil pump to the camshaft, valve springs and valve guides. To reduce wear and friction, a minute amount of oil passes through the valve guides and is completely burnt by the passing exhaust gasses as they leave the engine.

The cylinder bores are treated similarly, lots of oil on the bores initially which is reduced by oil control rings which are under the compression rings. the remaining oil on the bores is also burnt during the ignition cycle of the engine.

So you see, some oil will be consumed as you drive. If it wasn't, your motor would quickly seize.

Your mention of the engine being sluggish. I can only suggest a compression test to see if you've lost compression in the engine. If that's the case, another new motor I'm afraid.

[2i30s]

hi CBF,my i30cw and i30 hatch both use about 500mls of oil every 5000-6000kms. both engines are only 40,000kms old and have had the problem from new,the dealer assures me its normal for a modern multi valve engine to do so.  our cars are serviced by the dealer every 7,500kms. I'll give you a little bit of advice on oil ,don't put castrol magnatech in a 2.0 petrol i30 engine,they don't like it one little bit.  my dealer used it in our cars a few times and our engines used 1ltr every 4000kms,switched brand of oil and the oil consumption has halved and the tappet noise is also gone.    i hope this info helps you.    i use Dandenong Hyundai in Victoria for our services. 

[eye30]

I presume that the engine has been check for oil leaks?

[2i30s]

I presume that the engine has been check for oil leaks?

[i assume you mean me] my cars have been both checked for oil leaks Lester. 

[eye30]

I presume that the engine has been check for oil leaks?

[i assume you mean me] my cars have been both checked for oil leaks Lester. 

CBF's car

[2i30s]

I presume that the engine has been check for oil leaks?

[i assume you mean me] my cars have been both checked for oil leaks Lester. 

CBF's car

his car has been fitted with a new engine Lester.  [look at his first post] 

[eye30]

I presume that the engine has been check for oil leaks?

[i assume you mean me] my cars have been both checked for oil leaks Lester. 

CBF's car

his car has been fitted with a new engine Lester.  [look at his first post] 

Yes I know but he is now having oil loss from the new engine isn't he...

[2i30s]

yes mate,but I'm sure its only the same as my cars. IMO. 

[eye30]

With my diesel I've never had to top up between services

[Dazzler]

The first service on Trish's CW was done in January at around 8000 kms  (12 months) and I am sure we didn't need to top up the oil in that time. 

[2i30s]

our cars only started to use oil after the first service. i put it down to crap oil. 

[Dazzler]

our cars only started to use oil after the first service. i put it down to crap oil. 

I supplied the oil - Castrol Edge Sport 5W-30 

[Keith]

I've covered 22,000 miles in my 1.6 petrol in 17 months, & check the oil every weekend. Never had to top it up. Could driving style play a part here? I drive mine using less than 2,500 RPM baut always over 1,000 RPM until its at centre on the temperature gauge.
I dont thrash it or, importantly... I dont labour it either.

IMO doing either or both of these will cause early engine wear.

I still dont know what oil / filter my dealer put in at the last service... :-(

[asathorny]

Mine is as staed in the biline below (which has been iinterfered with), it is just over two years old and I also have never once had to top up the oil or water.   Although it is a low milegae car (10.000) pretty much all the milage is acrued on the motorway/highway.   As the above post say, he does not thrash so I say too, I usually keep an eye out for a large truck chugging along at 60 MPH and slot in right behind the big bugger, I have no crazy impulse to be at the front of the queue and just sit there happy as larry (whoever larry was).

I would be worried/frustrated if I were constantly topping off with oil, I have no suggestions for you, other than keep asking the dealership ?????

[CBF]

Thanks for the replies.  The car has been serviced by the book at Hyundai Service Centre . Not sure what oil or filter they have used, but presuming Hyundai would have a set standard for both.  We'll ask when it goes back in for the 1st top up of consumption test. The wifes in her 40's so the car hasn't been thrashed, or let the engine labour.   The car is a manual.  We'll get a compression test done after the oil consumption test is completed and see what that shows.   It just seems very strange to me that for the 1st 5000km of the engine it didn't use any oil to speak of.  Soon as it was changed, the consumption started.  Maybe it could be as simple as the type of oil they are using.  I hope so, at the current conspumtion rate it will use over 2 litres litres between 15k services. 

[Dazzler]

Good luck with this. Hopefully a change of oil might reverse the trend 

[eye30]

just sit there happy as larry (whoever larry was).

Lorry driver just in front of you   


I had a Metro many years ago and that used oil as if it was going out of fashion.

I was using 1l per 1000 miles and this was deemed to be "within tolerances"

[CBF]

I had a look at the muffler this morning and it has a fare bit of black soot/carbon on the inside and also a a ring of it around the exterior.  Is that normal. 

Cheers

[Dazzler]

I had a Metro many years ago and that used oil as if it was going out of fashion.

I was using 1l per 1000 miles and this was deemed to be "within tolerances"

... For a metro...

More normal for diesel to have that than a petrol in my opinion CBF...

[CBF]

Thanks dazzler.  I was thinking the same.   She travels about 60km to and from work everyday, most 100km zone, so there isn't alot of around town slow/stop start driving. 
Cheers

[Dazzler]

Thanks dazzler.  I was thinking the same.   She travels about 60km to and from work everyday, most 100km zone, so there isn't alot of around town slow/stop start driving. 
Cheers

I'm sort of hopeful that if you change to a different oil it might settle down .. Might be worth buying some Shell Helix Ultra or Mobil 1 or something on special at Supercheap or Repco and getting the dealer to swap the oil and see if that helps.. maybe they use magnatec which a previous member on here (who was a Hyundai Sales Manager at some stage) reckons is crap and as 2i30's says his cars didn't like it either...

[Phil №❶]

CBF

I agree with Dazz, 6 month ago I replaced the resonator on my Holden 3.8lt with a stainless steel cannon. It's only just starting to get a fine layer of carbon on the inside, so for a car of your age, I would say this is not normal.