Awesome

Hi Andy71, You wouldn't happen to know what oil the Dealer put in your car at the Service would you? Just curious.

cbrmale, very informative post. It would seem Hyundai have a thing about putting an ACEA A5 Spec. oil in the VT. I was speaking to the Service Manager at my Local Dealer and he said that at a Tech. meeting with Hyundai Australia they insisted Dealers used an oil with an ACEA A5 Spec. in the VT. As they use Shell Oils he was a little put out that he had pay a premium and buy a small amount of Castrol Oil just to service the VT in the interim. I agree with you in that 5w-30 oil is like water. I was very concerned with this fact when I bought my Turbo Diesel Santa Fe and Hyundai insisted on running this grade. However nearly 5 years on no problems. Personnal choice though.

Regards

Hey again, folks. I'll phone the dealer shortly and find out just what they put it in - even the service rep was shocked when I showed her the service schedule from the previous page. I showed her the 'option' of oil replacement and told her to kick the salesman up the ass for his dodgey information. She went on to say 'we HAVE to change the oil at 1500 - no option on that' so yeah CBR, might be best to give them the drum before it goes into the Hyundai workshop.

As we've seen, the intervals on the VT are 7500k but now I'm interested to know exactly what they've put in as far as weight and viscosity at high temps goes. I don't thrash JJ especially hard - don't think I've red-lined it yet as it goes plenty fast enough up to about 5k or so BUT I am a gauge freak, especially where temp is concerned so I'll be keeping an eye on it.

Yes, very interesting info, CBR

Coolant temperature and oil temperature are two different things. Unless you have oil temperature and pressure gauges you won't know what the oil is doing. As long as oil is 90 degrees or less the 30 weight should be okay, but if it gets around 100 then it's not so good. Oil temperature will rise when the engine is working hard like climbing a steep graded pass on a hot day maybe with the airconditioning on. There are a few steep passes in NSW like Brown's Mountain, The Clyde and so on. Oil is heated by cylinder head combustion chambers, the turbocharger and in the case of the VT oil is sprayed against the underside of the pistons to lower piston operating temperatures. This hot oil falls back into the sump and is sort-of cooled by air flowing under the car before being re-circulated and re-heated. So coolant temp can be fine but oil temp can be something else.

I'm going conservative and will stick with my 5W40.