Sludged engine help ( I know dead horse), but confused)

[jssaab]

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

 

[jssaab]

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

 

[partspro]

Originally Posted by CharlieBauer

[/quote] I would do one thing differently. Final oil change with M1 High Mileage 5w30, no additives.

While it is a GM engine it is modified my Saab to stand the turbo stress. Why would you not use a higher ester based 3.5 HTHS Euro oil that should have superior cleaning abilities in a Euro car? ESP is one of the very best oils on the market.

Listen to Trav, he knows what he says, short OCI's at first replace filter rinse and repeat, not literally

 

[kschachn]

Listen to Trav, he knows what he says, short OCI's at first replace filter rinse and repeat, not literally

Hopefully this has come and gone in over two years.