Tiger 900 Petrol in my Oil

I would say either the rings are gone or you have bore damage causing petrol to pass your pistons into the crankcase.

 

Just wondering if it's a carburettor model where the float needle has dirt in it so the carb doesn't shut off the petrol entering it and then keeps overflowing allowing petrol into the cylinder whilst stood, the petrol then leaks by the piston rings and into the sump where it mixes with the oil. Just a guess though

 

I would of gone down that route of thinking too but TigerKing also mentioned that he is losing power, which is why i went down the piston rings route, getting bore wash & losing compression? Just a thought :smile:

 

It's an easy compression test and if low it's your rings or bore lining.
Can be honed out and new rings...

 

Like screwball said, simple compression test & see what each cylinder comes in at then squirt a bit of oil in each plug hole & check compression again.