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i'm not going to argue with jcolley however I will say I don't see issue with larger gap in any engine as long as oil pressure holds and there's no journal/bearing contact.
You want to keep 10w-60 with larger gap. IMHO, if you go thinner oil with larger gap, it may have opposite effect than what stock s85 experiences: the oil may get out too quickly causing bearing contact.
As long as there's no contact and no oil pressure issues, I see no disadvantage to the slightly larger gap that ACL HX offers.
I plan on proving my point after 50k miles on my HX bearing set. I will take it apart and let the forum know. It will probably take me about 3 years to rack up that mile. It doesn't see any track time, but I rev it to redline every chance i get.
2006 E60 M5 with supersprint headers, mid pipe, and muffler without cat. Evolve R stage 3 tune.
Last edited by sunghyun7; 30th January 2019 at 01:46 PM.