file.newsgroup.cars.101673 Maven / Gradle / Ivy
From: [email protected] (Mark Wayne Blunier)
Subject: Re: 5W30, 10W40, or 20W50
[email protected] (Craig "Powderkeg" DeForest) writes:
>If you're planning on making long drives, the 20W50 is probably fine
>(esp. in the summer) in your 10W40 car. But if you're making short drives,
>stick to the 10W40.
Several years ago GM was having trouble with the rings sticking on the
5.7 diesel. They traced a cause to the use of 10W-40 oil. They would
not honor warranty work if 10W-40 was used (if my memory serves me).
5-30, 10-30 or 20 50 was OK'd though.
Mark B.