- Feb 15, 2003
- Jupiter, Florida
I'm glad you brought that up as an example, as the Honda V6's are perfect case studies.Well a V6 Accord goes 800,000+ miles on 20 grade with extended drains. How much farther would it go with 30 grade?
1) They use timing belts, not chains. So the need to protect a chain is eliminated.
2) Some years employed low tension piston rings. These clearly had short lives with the thin oils and extended lives with higher viscosity
3) These 3.2 through 3.7L V6 engines can in racing conditions, sometimes develop rod knock problems. This happens with inadequate viscosity and high RPM.
As I continue to mention, it's not the low viscosity that is the problem, issues generally stem from a manufacturer's choice of inadequate design, inadequate component quality coupled with long OCI's, fuel dilution and heavy soot levels. Getting a Ford 5.4L engine to live a million miles on 0W-20 requires a redesign. Or for the 5.4L, just choose 10W-40 and enjoy long engine life.