BenzWorld Junior Member
Date registered: Mar 2010
Vehicle: 1973 W114 250 / 1988 W126 420SE
Location: San Jose, Costa Rica
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220D oil consumption and black smoke after historic rally
Hey guys my 220D had been consuming some oil even though I had a high viscosity on 25W60 Castrol Viscous oil in it...It would burn a lot but not as much as after this event.
Took the car for a historic rally maybe about 180 miles or so was half a tank of diesel when before refueling right before the event and the oil was topped off.
There was a lof of hill climbing and I really had make the old Merc work for it, there was no overheating everything went smooth.
When we were heading back home I felt the car was pulling or surging a bit at a certain rev range nothing too uncomfortable, stopped to fill up with more diesel and that's when I started having problems...
Suddenly the oil pressure gauge dropped to 30 and then 15 on acceleration even going down close to zero and back up to 45. Had to exit the freeway on the next ramp and checked the oil level.
Guess what... it burnt 4.3 quarts of oil! It was basically running with no oil.
Picked up some oil at the gas station URSA 40 SAE HD filled it up and brought it home, on the way home I notice suddenly an increase in power on the freeway followed by a lack of power once I got downtown. I have to give it more gas to go at red lights per say... It even stalled for me a couple times.
Next morning... (today) turn it on 40 sec pre glow fire up a bit lumpier at the start than usual but fine, lack of power is still present and now I have black smoke even under mild acceleration.
So I guess question is:
-How the hell do you burn more than a gallon of 25w60 oil in just 180 miles?
-Any ideas on the loss of torque, pulling and black smoke?
Filters are new, tank and lines were cleansed about a year ago. Haven't gotten around adjusting the valves but I don't think that's it.
Sorry for lengthy post.
PS: FYI Last month I ran the car with 100% Biodiesel have don e it before with no problems at all.