diesel in the oil

[charlesenriquez]

I think that Im getting diesel in my oil does anyone know how to tell if it's happening and how this could be happening 2002 f-250 7.3 Thanks

[jesilvas]

Is it "making" oil? As in does it get higher and higher on the dipstick?

[charlesenriquez]

I think so, I fixed an o ring a month ago and just put two quarts in and didnt check it so b/c its a little overfilled

[ryandamo]

you could send an oil sample to blackstone labs to see, I would wait a little more just to see if it adds oil, you could have just overfilled it.

[BraveHeartCalif]

inj or inj seal

[jesilvas]

Originally Posted by BraveHeartCalif

inj or inj seal

But how can the fuel get in the oil? The oil is at a WAY higher PSI than the fuel. It would be the other way around.

[444 ci]

if you have diesel fuel in your oil you have cracked injector cups its the only way diesel fuel can get in your oil.

[danman]

I just recently attempted to flush and fill my rad and noticed a strong smell of diesel fuel in the antifreeze so I took the truck to a local diesel repair shop. they said I have one or more cracked injector cups. It turned out to be just one cracked cup. they charged me 12 hours labour plus parts and while they were in there I told them to put new glow plugs in also rather than put the old ones back in. the truck has 140000 KLMs. This type of repair is beyond my skill level so it cost me dearly but if you can do the work yourself then go for it.

[firefighter317]

Easiest way to check for oil dilution is to pull the dipstick and wipe it on a white napkin or something white. If you have diesel fuel in your oil, you will see it seperate. The oil will remain in the middle and the diesel fuel will separate and make a ring around the oil. Injectors are your problem. The fuel will leak into your crankcase causing high oil levels on your dipstick.