Hello,
In the process of stripping my 03 Gas Gas Pro to change a leaking crank seal I found that the coolant was black and oily. It would seem that my water pump is drinking oil as well. I'm amazed that there was any left in the gearbox.
So my question - should I flush the radiator before reassembling the cooling system (and if so, with what?)or just fill up with new coolant?
New waterpump seal on its way from BVM.
Cheers,
Tony