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

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.
[/QUOTE]
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.

 

[4wheeldog]

Currently the advise for this project would be Valvoline 5w/30 Restore and Protect. Not something we had 5 years ago.