Originally Posted By: Striker
I've been using German Castrol for the past few years in my LS1 with good luck. No burning, nothing. Sure, I get piston slap upon start up but that's GM for ya.
Car is only driven in the summer months and that's it. Lately I've been thinking IF I should go with something that is 5W?
What else would you guys recommend that is as good, if not superior to GC?
0w, 5w 10w is only a concern in below 0 starting temps. ESP for performance car summer use.
BUT, you are not using an ILSAC energy conserving oil - which MAY be a good thing.
When the engine becomes "used to" a lube and it likes it, I would NOT change to an ILSAC oil and its associated dirty, varnish making VM adds. Anyhow its likely not a real tech synthetic as the Euro spec LL lubes are - just market manipulated dino juice.
I would say M1 0w40, Castrol ACEA A3B4 MB/VAG spec, MOTUL X-MAX 5w30, Fuchs Silkolene, Total Quartz or other LL oils are decent year rounders. You may wish a motorsport oil for sub 5k miles OCI instead of the 10K mile + LL oil with its "too much detergent".
Or, you could try mid saps ILSAC PU 5w/10w30 or M1 or EDGE w/Ti as something to free up some ponies - at what cost to your safety margin though ... ... . could be the straw that breaks the crank.
