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Join Date: Dec 2009
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There are sporadic instances of a cracked oil cooler cap that could leak. You might pull it apart again and inspect it with that in mind. You might even get a machine shop to check it out. There are areas of the front cover that could be at fault, but I would expect water in the oil to some extent.
The other possibility is your flush technique may not have got everything out. I've never heard of anyone using solvent, and that would not have removed oil from all the hidden pathways (heater core, upper radiator, heads, etc.)
The preferred flush technique is either Cascade detergent or Simple Green. You have to run it until it is hot and then use a Prestone flush kit to get the detergent water out. You might even have to do that twice if yours was bad. Then, after you get every grain of detergent water out, you do multiple distilled water flushes and only then go back in with your coolant.
2003 F-250 XLT Crew Cab 7.3L, Chrome BigTex Grille Guard, Quad pillar - 3 ISSPRO gauges (trans, pyro, boost) and DP-Tuner F6; Roush fuel pressure / temperature / oil pressure gauges, Ford Severe Duty AIS, 31 row 6.0 transmission cooler, ScanGauge II, Marinco mod, Walker BTM
I wonder if clouds ever look down on us and say, "Hey, look - that one is shaped like an idiot!"