Originally Posted By: tiger862
Originally Posted By: volk06
Originally Posted By: tiger862
http://www.pennzoil.com/motor-oil/pennzoil-synthetic-blend-dexos1/
This is what is recommended by GM. I would only do 3k on a Direct Injected engine. If you want to run OLM then PP or the Mobil 1 5w30 would work. I would be scared to run OLM if I planned to keep car. I have a VUE with the 2.2L Ecotech not DI and I change oil every 6 months since I am 90% stop and go and I only drive 6k or less per year.
Incorrect. GM only recommends DEXOS 1 oil. Not a specific brand.
If you want the oil that has held up the best with fuel dilution from DI, Valvoline is the answer. Maxlife would be a great choice as it meets dexos and has a strong additive package.
No you are incorrect. GM recommends Dexos 1 oil and it has a list of them which they recommend and Pennzoil is on the list. Valvoline is not on that list and unless things have changed Valvoline won't sign on to GM specs but they claim to exceed the spec which if GM wants to fight an engine claim they might just be able to do it since they claim without this spec damage to engine would not be covered under warranty.
http://www.gmdexos.com/
My statement was saying that GM does not recommend one particular brand, which is how your post made it seem. That GM had recommended Pennzoil synblend, while it is approved, its not GM saying it recommends the pennzoil. Pennzoil is recommending it for GM vehicles because it meets the spec.
Also, you DO NOT have to use a DEXOS 1 oil. It states you can use an oil of EQUIVALENT quality to DEXOS 1. It would be very hard for them to deny a claim due to using an oil that exceeds DEXOS1 but is not certified due to that clause in the OMs.