From the OP's first (exhaustive) post, "a Oct 2000 Motorcycle Consumer News test showed that the molybdenum content of Mobil 1 MX4T motorcycle-specific oil is 5 ppm and 11 ppm for Mobil 1 15W-50 automobile-specific oil."If your bike has a wet clutch make sure that the oil is wet clutch compatible. MA1 OR MA2 RATING
Regular car oil has fiction modifier, witch will cause the clutch to slip after prolong use.
Truth! I laugh when people proudly chest-thump "why keep an oil in you know has sheared to below Ducati's minimum recommended viscosity spec?!", and yet at the same time, totally ignore Ducati's 7.5k OCI spec...In the end, you'd have to try pretty hard to find an oil that's going to result in a failed engine in your riding lifetime given the short OCI's used. Funny that we keep hearing (and seeing test results) that today's oils are THE BEST EVER but, people keep shortening the change intervals. If it makes one feel good, do it. I guess.
I'm not doubting your thinking because I certainly don't know any better but what is it in the specification or chemistry that makes you think this?….Rotella T6 synthetic for over a decade because it is a C rated oil. As you probably know, C is for Compression...aka: Diesel engine use. I think that is going to provide longer service life than a S rated oil.
Yes you would think so and you may be 100% right. What I was talking about with sludge is some oils will leave a layer/coating of black/gray throughout the inside of the motor. One is a type of Motul, I have not seen it with all Motul users but there is one product that either has a heavy amount of moly in the oil that gets everywhere or something is dirtying up the oil fast. I have never seen gear damage with the dirty oils used so that's why I think the coating may be a additive. It does not matter to me as there are a majority of oils out there that hold up to gearboxes and do not require lots of time cleaning when I am inside one.oil looking dirty quickly vs not wanting sludge in the engine, doesn’t that mean the contaminates are in suspension rather than dropping out and building up inside the engine ?