Milky White paste in my crankcase

[RaderRider]

I have a 2004 yz450f and i went to change the oil yester day and when i took off the oil filler cap i noteced some white paste on the plug. so i took the left cover off and it was just pasted in white goo. I dont know if it is my oil that im using it's royal purple synthetic max cycle. any help would be greatly helpfull thanks.

[Yami450D]

you got alot of water in the oil I'm thinking, that's what happens to your oil when you get water in it.

[rexbond007]

is this your first oil change this year?

could be condensation left from winter storage.or you have a head gasket leak

[RaderRider]

ya thanks ill look into that sombody els said it could be the wate rpump seal too.

[grayracer513]

Can't be the water pump seal. If it leaks, the coolant runs into a space between the impeller shaft oil seal and the coolant seal. That space leads out to the hole below the water pump.

The leak points are:

Head gasket

Cylinder base O-ring

Right crankcase cover water passage O-ring

Very rarely, a cracked component or a leaky jacket plug in the cam box.