My 2001 6.0 is losing oil.

maineflyer123

Loses a quart in about 500 miles,no smoke,no visible leaks,120000 miles.I have only had it for 2500 miles.Where is it going?

carboy21

Use a thicker oil like 10W-40

thecardoc3

Pull the plugs and tell us what you see. Are the electrodes coated with deposits? Pics???

Mr_Shiftright

Either leaking or burning. The laws of physics say so.

Susie_Q

It's your engine oil seal making way.Time to do some top overhaul. Do check with the mechanic

maineflyer123

Today I read a GM bulletin that said a possible cause of oil burning is the PCV valve an it should be replaced with a later model such as 2003 without the check ball,several owners said this cured their problem,I ordered one today,will post when I get results,Paul

kkollwitz

120k miles and a quart every 500. Doesn't sound like a crisis to me.

maineflyer123

My 2001 GMC 2500 blows the horn fuse every time you try the horn,where is the most likely place for a short?

thecardoc3

The dark green wire between the relay and the horns.
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