GM4718M corvette oil

quote:

Originally posted by JE:
What means the GM4718M oil spec?
I am in europe, can't find the recommended oil according to GM for the corvette C6.
http://www.gm.com/corporate/re...oved_engine_oils.pdf

Why can't I use the 5W30 ACEA A3?

Regards JE

JE....list some of the oils that are readily available in your area. We can go from there.

I would think you should be able to(Being in Europe),actually find something that exceeds the spec you mention. That spec listed is the minimum,not the maximum just for the record.

Kirk

quote:

Originally posted by JE:
What means the GM4718M oil spec?
I am in europe, can't find the recommended oil according to GM for the corvette C6.
http://www.gm.com/corporate/re...oved_engine_oils.pdf

Why can't I use the 5W30 ACEA A3?

Regards JE

Short answer: If the engine calls for 5w30, yes, you can use A3/B3.

quote:

Originally posted by JE:
What means the GM4718M oil spec?
I am in europe, can't find the recommended oil according to GM for the corvette C6.
http://www.gm.com/corporate/re...oved_engine_oils.pdf

Why can't I use the 5W30 ACEA A3?

Regards JE

I don't know the laws in the Netherlands, but in the US and Canada, if you are required to use an oil on the manufacturers list, then the manufacturer has to provide it for free. In the US and Canada, you just have to look to see if GM4718M is listed on the label, and you will have met the warranty and manufacturer requirements. And if that oil has a warranty for the length of the oil change interval you want to perform, just in case it fails, then you are even better off.

Found some 5W-30 oils ACEA A3 spec.

Castrol Edge
Castrol SLX Professional
Motul 8100 X-Max
Motul GM LL A/B 025
Mobil 1 ESP Formula
BP Visco 7000
Havoline HWSA Ultra S
Gulf Formula GVX
Gulf Formula XLE
Gulf Formula G
Gulf Formula GMX GM LL A 025
Gulf Formula ULE
Shell Helix Ultra
Shell helix Ultra AG (GM)
These are available here in Holland, they are all ACEA A3, but none is mentioning the GM4718M spec.

During the search I found a lot of other 5W-30 types .

Unbelieveable how many different types 5W-30 oils are on the market.
Engine builders first design their new engine, after that the oil companies has to design and develop a suitable oil.
JE

Many oil companies recommend their correct motor oil on their websites. Here is the one for Castrol in the Netherlands: http://www.castrol.com/castrol...e.do?categoryId=3200 . Most have product recommendations based on year, make, model and engine. Just follow their recommendations and you will be fine.

In the US and Canada, most vehicle manufacturers recommend an oil that meets API specs. These are very minimal specifications that the lowest priced oils often meet. Chevrolet realizes that many of these API oils are not robust enough to work well in a Corvette, so they upgraded the API specs slightly and invented their own spec. European oils are generally much better than our API specs, and likely already meet or exceed the Corvette spec, so it may be unnecessary to list that spec on their bottles, especially since Corvettes are fairly rare in Europe, yet common place in the US.

found some more news on Dexos 1 oil spec in the GM engines

http://www.gmdexos.com/aboutdexos.html

http://www.gmdexos.com/licensedbrands.html

and it also mentioned on the mobil site
https://www.mobiloil.com/USA-E...s/Mobil_1_5W-30.aspx

and now found in the new corvette 2011 owners manual , see page 310 and further
http://origin-chevrolet-prod-i...tte_Owner_Manual.pdf

Is the dutch shell helix ultra extra a Dexos 1 oil?
As it is for the other shell US brands

Shell Quaker State Ultimate Durability Full Synthetic dexos1 5W-30 GB1A0702014

Shell Pennzoil Platinum Full Synthetic dexos1 5W-30 GB1A0703014

JE

More and more companies have the Dexos approval now, but some are holding back due to the ridiculous approval requirements and costs. So some big companies refuse to get the official approval. Dexos will be retrospective to previous GM specs and therefore likely to superseed GM4718M

I just thought that I started to understand all this and then I ran into this article.
http://diagnosticnews.com/tech...-lubrication-basics/



JE

Some additional info on the current list of licensees:

http://www.gmdexos.com/licensedbrands.html

Just make sure you use a full-synthetic oil. GM saw fit to leave out an oil cooler on some engines. Use any that you want and make sure you change it out within a reasonable interval.