Quote:
Originally Posted by 1LEornothing
No, what happened is that they did not have mobil 1 0W-40 full synthetic European formula on hand. This is the latest suggested oil for the LT1 from GM. Before this "almighty" lubricant came into existence in 2019, it was perfectly fine to use good old mobil 1 5w-30 full synthetic on your LT1 engine.
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Cool, thanks for letting me know. But I won't be going back to dealer ship for any service unless warranty issues.