Quote:
Originally Posted by crazyazn
So more moly doesn't necessarily mean better right? But higher the TBN the better right?
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The jury is still out on Moly DiSuphide. I have yet to come across any reading that conclusively proves it's harmful to passenger cars. (Motorcycles apparently is a different story with their wetclutchs)
Benefits are anti-wear properties and increased fuel econ.
Honda's factory fill has high moly, and Genuine Honda Oil contains good amount of moly. So that kinda swayed me to be confident with an oil like PP. That being said, it's just a different formulation.
Higher TBN is a good indictor the oil can be extended. One thing to note is TBN decreases non-linearly, it goes down slower near the end.
Extended drain oils like Amsoil SSO start out with high TBNs.