What causes diesel fuel to mix with crankcase oil?

OK were the injector cups checked in the head, There could of been an bad injector hole letting fuel mix with oil In the head, did anyone DYE the fuel to see what cyl is pushing fuel? If you have a restriction the return fuel cannot go back to the tank, there for it will mix with the oil in head area. fog like smoke?

What kind of gas does a crankcase ventilation system use?

As the air/fuel mixture becomes leaner, less NO Xshould be present. The sulfates and aldehydes will change depending on the fuel. An engine running on diesel fuel, landfill gas or digester gas will have more sulfides present in the blow- by than an engine running on natural gas.

How to run a caterpillar 12 grader clutch?

Remove the drain plug (7) cover screws (3) and covers (4). Remove the elements (5) from the housing (6) and in stall the new elements. Clean and install the drain plug and the covers. Run the engine for two minutes, then add oil to bring, level to full mark on gauge. 27 FLY~EL CLUTCH COMPARTMENT

How do you drain a caterpillar 12 grader?

Turn the drain plug (8) counterclockwise to drain the flywheel clutch compartment, on earlier motor graders remove drain plug to drain flywheel compartment. each time the diesel engine crankcase is drained.

Can you put diesel fuel in a crankcase?

Please keep in mind that diesel fuel in the crankcase drastically impacts the oil’s lubricity and creates excessive wear in all parts and the turbo bearing. I would take an oil sample with the contaminated oil and send it to a lab.

Can a Caterpillar engine leak diesel into the oil?

I have searched the Internet regarding the problem and it seems that this particular Caterpillar engine has an injector seal that can leak. When that seal leaks, diesel gets into the oil. Do you know anything about this problem?

What causes diesel fuel to mix with crankcase oil?