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Peter E (Sdibaja) (200.76.245.39)

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Posted on Friday, June 06, 2003 - 12:50 pm:   

I have a friend with 8v71 DD in a truck that appears to “make oil”. It does not leak, and does not smoke, very tight, unknown miles on it. He says he changes oil and filters at about 5 or 6.000 miles.
He says he never has to add more than ½ gallon of oil between changes.
This rig is mostly on long hauls. Sometimes he has some real short runs (10 miles) and the oil level appears to go up maybe a ½ gallon.
What to check? This truck is in Baja, Mexico and oil testing is not to be had locally.
Peter E
Jojo Colina (Du1jec) (209.75.20.72)

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Posted on Friday, June 06, 2003 - 12:57 pm:   

An injector line may be leaking and adding diesel to the oil.
FAST FRED (67.75.96.138)

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Posted on Saturday, June 07, 2003 - 5:47 am:   

Have him immediatly send an oil sample to the lab. About $13 for kit at DD dealer.

If a jumper line is cracked he could LOOSE engine!

DD's run best when lubes with 40wt , not 50% diesel!!

Just wipe the dipstick on a clean paper towel & see how the stain grows .
If black goo grows , its DD oil , but if it gets wet fast in front of the darker engine oil it could be diluted with fuel.

FAST FRED
Don KS/TX (65.150.144.120)

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Posted on Saturday, June 07, 2003 - 6:34 am:   

And if it is fuel in the oil (probable), because of where the truck is located, I would just pull the valve covers and look for the leaks on the injector fittings. Even a small leak shows up well usually, and as previously said, DD's love to leak there, and don't run it with diesel in the crankcase.

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