Originally Posted by mrblanche
A bad injector is almost always the source of fuel in the oil. They have o-rings around them that can be damaged or broken.
I agree. Faulty injectors will leak fuel into the cylinder, which in turn leaks by piston rings-into the crankcase. This will wash lubrication from cylinder walls and cause hot spots, scoring, broken rings, in addition to other issues stated in a previous reply.
Any authorized Cummins repair facility can run a leak-down test on the high pressure fuel system.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"