Have drained the crappy Dtsi oil within a span of 1000 kms, which was poured in during the first service..
After that have put in motul 3100, and still now it has been 4000 Kms, and i still feel the oil has something left in it..
Just to be sure, i wanna know, what are the conditions that one should check (like engine heating, engine roughness and stuffs) to decide whether the oil has served it's life or not?



How could this be??
. Firstly - how can a semi-synthetic oil's drain interval be more than that of it's base(mineral) oil at all ? Even if we accept that the little bit of synthetic oil that's mixed in it lasts longer , what about the base oil that is all mineral ? Would that not go bad in the same time & kilometers of use , as any other mineral oil ? Once the base oil (which is most of the oil) in the semi-synthetic , goes bad ... how can it continue to function as intended ?Moreover - I do not think you can run even a fully synthetic oil for vastly extended drain intervals than a mineral oil . Synthetic oils are known to be much less susceptible to oxidation and other deterioration and hence hold it's grade and last longer ... all that is very good - the oil continues to feel like new even after say 2000 kms of hard use . But the capacity of the small volume of oil in a motorcycle engine to hold dirt and blow-by effluents and neutralise acids would be saturated near about at the same time/kilometers as the same volume of any other oil . No ? So the danger is that after saturation the oil would continue to feel like new ... while it is no longer able to collect engine effluents (and hold it in suspension) or neutralise acid and deposit all that dirty stuff inside the engine . Isn't it ?
but are priced ~ Rs200. (much cheaper) and these are JASO MA oils. So no worry of clutch slippage.


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