Oil changing question

[Tmall]

Originally Posted by Amber Lamps

So without the engine even running all those things happen to the oil in your bike? How? Where does this moisture come from? The fuel? Any of it? Aren't those things conditional on the engine running and if so, once the engine is stopped the contamination process stops as well? My thought was that you should change your oil BEFORE storing your bike to prevent the moisture, etc from doing potential damage but since he(and I) didn't the "damage" is already done and changing it now won't help anything imho. At any rate, isn't this just another one of those old tech tips that applied to bikes with cast iron blocks, heads, rings, etc and don't really apply to modern bikes made out of chromed cylinders, aluminum blocks, Ti valves, etc?

You ol' ninja editor!!! I know what emulsion is and it can't happen without the engine running, if it could then new old won't fair any better. BTW if you have that much water in your oil, there's something else going on there chief!!!

Ideally, you should change your oil before storage and not start it again until you're ready to ride.

Emulsion occurs because you run your engine without bringing it up to a hot enough temperature to evaporate any moisture that collects due to temperature changes.

A very small amount of fuel would get by from regular use. Carbon blows by your rings. When that mixes with the moisture from condensation it becomes acidic.

This applies to all engines. However, it really probably wouldn't effect your bike very much. That doesn't change the fact that it doesn't happen.