jssaab
Thread starter
- Messages
- 62
- Location
- Old Saybrook, CT
Thanks the 0W-30 is specified and those GM specs are correct. M1 ESP meets those specs and I had 250K miles on my strong running 9-5 (with 330 HP tune) until I hit a deer.... Just a little varnish on the engine, did not burn a drop in 5K OCI