Join Date: Jul 2012
Thanked 36 Times in 21 Posts
The soot, or combustion by product issue would be the same. But this does not take into account particles from clutch and trans wear. Nor would a discussion of car oil consider the higher loads and shear forces in a MC engine. Also anyone who has drained oil will notice that it smells different than new oil, this is largly due to accumulated acids. As I have stated befor on this forum, I made my living for years repairing motorcycles, I have seen results of small particles of debri on internal engine parts. I know owners like to reference the owners manual intervals but this makes the assumption that the manufactures are free to exactly what is best for the machine, sadly this is no longer true. Manufactures are under increasing government pressure to reduce resource consumption and hazardous waste generation. You will no doubt have peopel say that they use extended intervals and never have a problem, but what they are really saying is that they have never had a failure. Without regular compression, leakdown, dyno tests and oil analysis how would they know if their engine is wearing a few percent faster than it otherwise would. I am not selling oil and everyone is free to do what they feel is best, but I can tell you I would never and most of the experienced mechanics I know would never run oil to the listed intervals.