Flushing engine oil

[GSVR]

Good answer. Will take me a few days to read the massive download Bonez posted but in skimming it appears to be very pro synthetic.

[Motig]

To get rid of any crud that has settled on the bottom of the sump, shake bike, turn upside down and drain oil from refill hole. Flush out with water and detergent, then refill with fresh oil. See its easy!!!

[speedpro]

I prefer to take the cam cover off and fill the engine completely to the top with kerosene. Run it, with the camcover still off to avoid pressure build up, for about 5 minutes and then drain the whole lot onto the back lawn. Replace cam cover and sump plug, top up with engine oil to the correct level.

Talk about over the top.