Originally Posted By: ARCOgraphite
Well, there is the power and smoothness issue too. And fuel dilution. My Yaris wont rev with the stuff(20). Sounds like a bucket of nuts and takes FOREVER from 4000-6000RPM. UOA aint everything - just a tool. You can have sweet UOA then - BANG! Spun rod bearing.
Yes, you certainly can. But on the other hand, we all know that UOA can, and often does, provide valuable early warning of an impending disaster. My point is that, while "silent failures" do happen, we should very clearly be seeing mountains of evidence of harm if 20 wt oils were truly inadequate lubricants.
Well, there is the power and smoothness issue too. And fuel dilution. My Yaris wont rev with the stuff(20). Sounds like a bucket of nuts and takes FOREVER from 4000-6000RPM. UOA aint everything - just a tool. You can have sweet UOA then - BANG! Spun rod bearing.
Yes, you certainly can. But on the other hand, we all know that UOA can, and often does, provide valuable early warning of an impending disaster. My point is that, while "silent failures" do happen, we should very clearly be seeing mountains of evidence of harm if 20 wt oils were truly inadequate lubricants.