Would a C3 Oil Protect a Timing Chain Better Than a C2 Oil?

[buster]

This is from 2019 or so, but still relevant. When you look at this study, you realize it's not a viscosity issue at all. It's more related to the additive chemistry. Moly really helps. Boron helps but not as much. ZDP doesn't help and can hurt in too high quantities. This is why they develop engine testing for timing chain.

Low P and high moly seem to be the best for timing chain. However, it also stated MoDDP at 65ppm is very good. I wonder how trinuclear would do?



https://www.stle.org/images/pdf/STLE_ORG/AM2016 Presentations/Engine and Drivetrain/STLE2016_Engine and Drivetrain III_Session 3C_C. Esche_The Role Additive Chemistry Plays.pdf

 

[buster]

Great example too of how just throwing additives in your oil, or assuming more of xyz is better is completely untrue. When product data sheets state "carefully balanced" additive system, they're not lying.

 

[yowps3]

You can find oil combined C2/C3 with MB229.52 approvals.