oil in the water

[TimMiller]

mine is slowly putting oil into the coolant. I only see a little oil floating in the coolant. I know mine is my oil cooler o-rings. It pukes out a lot of oil until it warms up.

 

[Bobcat]

water in oil

do you ever have to add water to the cooling system

 

[JOAT]

Oil cooler o-rings are a pretty common cause for oil in the coolant. Oil pressure can run close to 100psi at startup so might be forcing past hardened o-rings. Certainly the easiest possibility to fix.

When you say you add as gallon or two a week, do you mean oil or coolant? If it's that much oil you may have bad injector o-rings.

 

[Bobcat]

ok took truck to shop and they replaced the o-rings on the oil cooler, i have had the truck back since this pass thursday, today i had to add a gallon of water again. when i took the cap off the coolant res. had oil in it again, so now what is the next step cause it looks like this did not fix the problem.

 

[JOAT]

OK, losing a gallon or two coolant a week you should be able to find by using a cooling system tester. Basically pressurizing the cooling system and looking for leaks and watching the coolant level. Presumably if there is an internal leak you wouldn't see it from the outside but the coolant level should drop over time. If the oil level rises it is intruding into the oil from somewhere, cooler, gasket, cups, etc. If coolant drops but oil doesn't rise, DONT start the engine without pulling the glow plugs as it probably went into a cylinder then. If pressure keeps dropping but not coolant level, the leak is above the coolant level so air is leaking while testing.

How much oil in the coolant bottle? Was the system completely flushed after the cooler o-rings and gaskets changed?

 

[Bobcat]

yes the system was flushed the best that it could be there has not been enough oil in the coolant for me to have to add any oil. like i said it has not made any oil and i have not had to add any oil to it, and there is no water in the oil. how hard is it to pull the glow plugs or to replace the head gasket.

 

[JOAT]

I wouldn't just go swapping parts at this point, too expensive and multiple possibilities.

Since you have a significant coolant loss I'd start with pressurizing the cooling system for several hours, 15 psi or so. There are tools for this or you can improvise something.

You can also buy a Block Chek Combustion Leak Tester at better parts stores for around $35. It will force any gases escaping the cooling system through a blue liquid, which will turn yellow if combustion gases are present from blown head gasket, cracks, etc. A very awesome test tool to have IMO