Cake Batter Oil

If that engine had been submerged in a flood or even driving in high water that is what it could look like too. After the last few big hurricanes that hit Houston and the floods we had seen a bunch of that.

 

Combustion in the engine oil will almost be gritty to the touch. Almost like carbon in the oil. Usually blacker than black. But thick like that.

 

Thanks I did not know that.
I always expected coolant in the oil to whip it white. That is not true with some of this oil and coolant anymore. I have seen oil that looked good on the dipstick. Let it sit overnight and could drain antifreeze from the bottom of the oil pan.

 

That brings a memory to mind after what wore out said.
Years ago an employee rebuilt a 3406B. A couple of weeks later it was leaking oil out the front, back and plowing the dipstick out.
Found the screen in the blow by housing on top of the valve cover stopped up with soot. Assumed he missed that. Replaced that and life was good for about two weeks. Then it was doing the same thing. He was checking and found one of the #6 exhaust valves could be moved side to side 1/4" at the top by hand with the keepers still on it. He pulled and I took it to the machine shop. Showed the deal to the man and asked what caused this. " Well could be lots of things. Maybe #6 was not getting lubricated as well as the others. In 5 or 600,000 miles it adds up. " Then I told him you just did this head about 4 weeks ago.
Fixed the head and gave me a head gasket set. That was fun.

 

CAT had a problem with valve guides for a while some years back. A bridge being out can get a valve guide in a second too. As well as pull the bridge pin, break the pin etc. then hell ensues from there. I had one brought over last year that would loose oil pressure at cruise speed when it finally got down to 30 at cruise he discovered it still had 30 at idle. So an oil filter fixed that he drives it bout 200 miles starts again so I explain when I told him to change filter that was a get it home deal not a fix how did you miss that. I get to digging into it and #5 nozzle didn’t have the white compression seal on it. You could see compression been blowing past it. After finally getting it cleaned up on bottom that took care of it

 

Prolly got the same kinda grime inside it, as is accumulated on the oil pan. Definitely has not been taken good care of.