871 sludge in oil

[Nostalgic]

(05-28-2023 )Bengy88 Wrote:  Before I cleaned anything my first step would be to find out where the coolant is coming from. I would recommend dropping the pan and pressurizing the coolant system and see if you can locate a drip after a little while of keeping pressure on it, rotate the engine a little every so often. If you don’t find the source then it’s pointless to clean anything.

True, I guess I viewed it as the EGR cooler was bad, replaced, now dealing with sludge. Could also have meant EGR cooler bad, replaced, still pumping coolant into oil. Little clarification OP?