Originally Posted By: FamilyBuggy
Just another update. I switched to Castrol HM 20w-50 about 3 weeks ago. The Castrol HM in that weight was easier to find than the M1. I decided to not add another bottle of the Bar's treatment just yet...to see how it would do. So far, the leaks have slowed even more. Now whether that's the additives in the Castrol HM or the thicker oil I can't say. Given what a leaker she was a few months ago...I'm pretty happy though.
Castrol HM 20w50 Dino is more than double the thickness of Mobil 1 10w40 full synthetic. Will tick like crazy on startup with that, so dont add motor honey, may starve it too much.