Oil in coolant - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 07-01-2013, 10:12 AM Thread Starter
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Oil in coolant

Ok I'm somewhat newer to these engines, I have a 2002 F550 with the 7.3 powerstroke. 265,000 miles. I bought it as a non running truck for a steal of a deal, all the guy could tell me is it stopped running and wouldn't crank. I found low oil in the block reason it killed and found oil in the coolant,no problem then just need an oil cooler. I went to napa and bought a bran new oil cooler with o rings removed the oil cooler cleaned up the caps installed the new cooler bolted up on the block. Gave her a fresh oil change and turned her over, it cranked but wouldn't start, a couple shots of starter fluid and she was up and running like a top. So I proceeded to clean an flush the coolant system. 10 min into running the truck it killed, no oil on The dipstick... All the oil back in the coolant!!!!! Is I thought maybe I did something wrong I pulled the cooler and checked the prongs and caps, all seemed good, so back on with the cooler more oil in the block. Again no start without starter fluid once she cranked she ran great I puller the lower hose off of the radiator while it was running and there is a slow steady stream of milky oil coming out the lower hose...

So now the part I need help with, where did I go wrong? What did I miss? What are my options?

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