So this has been on my mind the last few weeks and I'm curious. I have smelled over used oil before - always on other people's vehicles. I have smelled oil that has been run a reasonable interval ... 5000-7500 miles.
A few weeks ago I decided to replace the rear main seal and oil pan gasket on my Jeep 4.0 (that's a whole other fuster cluck). The seal wouldn't come out and I had to loosen the other six main bearing caps.
This, of course, allowed the oil passages within the engine to drain out completely.
The oil that came out smelled HORRIBLE. The only time I have ever smelled oil like that was on a vehicle that had gone >15000 miles without an oil change. It was also very dark black.
The oil that was in the pan was "regular" smell and color. It was only in for 2000 miles or so.
A few weeks ago I decided to replace the rear main seal and oil pan gasket on my Jeep 4.0 (that's a whole other fuster cluck). The seal wouldn't come out and I had to loosen the other six main bearing caps.
This, of course, allowed the oil passages within the engine to drain out completely.
The oil that came out smelled HORRIBLE. The only time I have ever smelled oil like that was on a vehicle that had gone >15000 miles without an oil change. It was also very dark black.
The oil that was in the pan was "regular" smell and color. It was only in for 2000 miles or so.