1995 ford pstroke greyish oil won't start

So I have this truck that has 250k on it was running fine notice didn't have a lot of coolant in resivor so I filled it up and now won't start at all and have greyish oil check the oil cooler o rings and they look good pulled injectors all the o rings look good wondering what else it could be. Thanks in advance.

Oil cooler rotted? Did you pressure test the cooling system?

So you pulled the injectors and oil cooler apart....did you replaced the o-rings?

Pull the oil drain plug and pressurize the cooling system.

When you had the injectors out, did you pressurize the cooling system to see if any of the injector cups were cracked? But oil pressure is higher than coolant pressure and you should see signs of oil in the cooling system.

Billy T.
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