JASO tests wet clutch friction, good. Is there only one type of material wet clutches use? What about surface area, engine output etc.? None of that I saw accounted for in their test.
Yes, the test is there but what happens if your clutch still slips on a particular JASO oil? Should one just ignore the slippage because the oil was JASO certified?
There is a member here that experienced that with JASO oil, switched to something else, not sure if it was JASO or not, and slippage stopped.
What sort of guarantee is there that JASO oil will not cause clutch slippage?
Yes, the test is there but what happens if your clutch still slips on a particular JASO oil? Should one just ignore the slippage because the oil was JASO certified?
There is a member here that experienced that with JASO oil, switched to something else, not sure if it was JASO or not, and slippage stopped.
What sort of guarantee is there that JASO oil will not cause clutch slippage?