Talk me out of running 0w30 in my Ecotec3

[Old-Days-Rick]

So several months ago to celebrate winning the war a 3rd or 4th time, I decided to stock up on 0w20 oil since word on the street was it was going to be in thin supply and prices going up.

I bought out several Walmarts and went even further to buy out some 0w30 oil. I really want to use this in my Tahoe with the lifter eating 5.3l Ecotec3.

My plan is to run 0w30 for the rest of the warmer weather then put the sewing machine oil in for the winter.

GM has admitted that thicker oil is better by changing the spec in the 6.2l engine debacle.

Its funny 30 years ago 5w30 oil was laughably thin, now its a good thick oil.

[Old-Days-Rick]

This is the haul from 1 store, I have 8 jugs of 0w30 total which will be good for 5 oil changes.

[db4690]

[bcohen2010]

I would not go thinner than 5W30 in any engine, regardless of manufacturer recommendations. Manufacturer recommendations are based on meeting CAFE requirements, and making sure the engine lasts through the warranty period. They aren’t based on maximizing the life of the engine. That’s an important distinction.