How do I Completely Drain all of the oil?

[Tortuga_imp]

There just happened to he an article in one of the bike mags out this month that mentioned concerns about mixing dino and synthetic oil. According to them its absolutely no problem at all, even in larger quantities (like topping up a low tank/crankcase with the "wrong" oil.)

I know nothing about oil. When I was young and cars and bikes leaked the stuff all over the place or burned it up, you used to put pretty much anything in to top it up and there wasn't a problem. When I suggested I needed to top up the CB recently, the person at the dealers had apoplexy at the idea I might use anything other than the brand that had gone in at the last service.

I know nothing about oil. When I was young and cars and bikes leaked the stuff all over the place or burned it up, you used to put pretty much anything in to top it up and there wasn't a problem. When I suggested I needed to top up the CB recently, the person at the dealers had apoplexy at the idea I might use anything other than the brand that had gone in at the last service.
This.