ATF to \"clean\" engine??? OK I have this crazy IDEA to "CLEAN" the insides of my engine. Last I looked there was indeed some sludge on the engine internals. My reason to "clean" is because 1) I THINK the oil rings have not seated (or I put them together wrong) /forums/images/graemlins/frown.gif as the engine oil turns black within 5 or 10 miles. I have tried Valvoline, Havoline, Castrol, and Kendall motor oils with no change in black oil. 2) Either my cheap-a$$ use of NOS lifters (and OEM pushrods) are bad, or they have sludge in them and some of them tick. I have tried re-adjusting with no changes in the ticking of the valve lash. I had the engine rebuilt 20k ago. Cheap head job, then one of my head's cracked. So I had another set of heads put on with a GOOD valve job - hardened seats, new valve guides and seals. So I doubt it is the valve seals. So back to the ATF thing - is this a "good" idea? And more importantly will it work? If not - is there something out there that WILL work? /forums/images/graemlins/ears.gif If nothing else, I will change the cam and lifters. But what to do about the black oil? BTW: the plugs look great - thanks to my fuel-injection, hence I don't think it is a fuel-rich problem. Thanks in advance.