1999-2009 [Subscribe to Daily Digest] |
Would Amsoil 5W40 European formula be an option too?
It matches all but one requirement-GM long life.
I'm concerned that M1 0W40 runs on thin side of 40 and read some reports that it breaks down to W30.
Any thoughts?
Victor
03 9-5 Aero sportwagon 5 sp 44K
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