I have an internal oil leak on my 96 GMC Suburban, 6.5 TD. Almost 211,000 miles on it, running Rotella 15w40 and Wix filters. Only gets occasional use most of the time. Driving more often right now while other truck is in shop. A while back, was running it a high idle and it unexpectedly died with a puff of smoke out the exhaust (don't recall color). Too much going on at the time to spend a lot of time on it. It restarted just fine and I have not noticed any loss in performance then or since.
Symptoms: No / little oil leaking underneath, but is losing it quickly according to dipstick. No "milky" stuff on the dipstick or in last oil change (2 days ago); regular old black oil. No change to how it runs; starts same, idles same, no noticeable loss in power; I have run it on the interstate at +/- 65 MPH with no symptoms. Don't see evidence of oil in coolant reservoir.
What am I dealing with? Cost to repair?
Symptoms: No / little oil leaking underneath, but is losing it quickly according to dipstick. No "milky" stuff on the dipstick or in last oil change (2 days ago); regular old black oil. No change to how it runs; starts same, idles same, no noticeable loss in power; I have run it on the interstate at +/- 65 MPH with no symptoms. Don't see evidence of oil in coolant reservoir.
What am I dealing with? Cost to repair?
