Cake Batter Oil

5 bucks says he had an oil leak and popped some stopleak in there.

 

Would like to see what the top end looks like.

 

Can’t open this link. Says it’s private

 

I have seen a few different things cause that.
First was a E350 van with a 351 that had a reman engine put in at the dealer. This was for a major company that I worked for.
I pulled the records and it had over 30,000 miles on that oil. It was likely break in oil as well.
Second was in some transmissions. A lot of old timer produce and cattle hauler folks ran mineral oil in them. When you start mixing mineral and petroleum it makes stuff like that.
Third was a cracked liner getting coolant in oil. It was not that color but not off to bad. Lots of different coolants out there anymore. It could happen.
A local company here was using oil blended by the local oil jobber. They never had any problems but said when they took the covers off the top end was full of black slime.
Anyone or a combination of those things?

 

Is he losing coolant? Black in the fuel filter is either algae or compression getting into the fuel.

I'd bet it looks milky on the top end

 

If seen that when rain water or regular water from washing gets into oil as well. The oil leak may be letting water in. Heavy water like that will mix nasty.