[rohrt]

Originally Posted by Will

This is BS.

Any brand name oil is fine. Heck, the parts store brands are fine too. The important thing is to change it and the filter regularly and make sure the PCV is functioning properly.

Could be. Not the first time I heard people say stay away from Quaker state and Pennzoil. But that was a long time ago and I'm sure things have changed.

I tore into a lot of motors in the 80s and I saw a tone of them that were sludged up under the valve covers. I haven't seen any like that anymore. I would think that were some cheap oils back in the day that contributed to that.