Originally Posted By: Danh
Some seem to think once seals have been conditioned with MaxLife, going back to a conventional, non-HM oil will result in shrinking seals and again, more leaks than there were at the beginning. Again, has anyone seen this?
This has not been the case in my experience. I have run a few OCIs of MaxLife 5W-20 (the NextGen variety, for what it's worth) in our 2008 Honda CR-V, with fewer than 70,000 miles, and I now have Pennzoil Platinum 0W-20 in it and there are absolutely no leaks. Granted, I didn't run the MaxLife for 100,000 miles and then switch to something else, but in my limited experience, I have not had any leaks when switching back off it.