Thanks, Smark. Were it that simple. Not a drop of oil anywhere near the back so it certainly not the oil pan. Also, the hit was passenger side front pushing the deer off the road with my speed dropping to no less than 40. There was no bottoming out or hit anywhere near the engine. Another observation is that the oil loss only happens at speed.
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Indeed, it does not add up. I'll let you know what we find on the lift.To my knowledge there is no breather tube on the 451 engine. With an oil leak that bad there should be a puddle of oil right under the engine. Something isn't adding up here....
Update. Still a mystery Our best guess is that is only happens under load and above 4500 RPM (highway driving). This implies that the leak only happens at higher oil pressure and would spray. Maybe the oil filter is compromised somehow (it was not lose or visibly damaged). Any solutions to this puzzle would be much appreciated.
1. Leak in front was coolant. There is not oil in the coolant.
2. Back skid plat is dry except for a little coolant blown back
3. The engine is completely dry top, bottom, front, and back. The mechanic used a mirror to look into tight places.
4. The oil pan is pristine. It was replaced last year due to a crack and still looks brand new.
5. Staining on the rear axle beam and oil filter appears to be dried blood and fur
6. Above and underneath found no oil staining
7. No oil in emission/vacuum lines
8. No codes and OBD2 shows everything in normal range
8. With engine running at idle and at 3500 RPM (no load) there are no signs of oil loss
9. Next test (proof) is to top off the oil and drive at highway speeds for a quarter tank then check the oil level
Our best guess is that is only happens under load and above 4500 RPM (highway driving). This implies that the leak only happens at higher oil pressure and would spray. Maybe the oil filter is compromised somehow (it was not lose or visibly damaged). Any solutions to this puzzle would be much appreciated.1. Leak in front was coolant. There is not oil in the coolant.
2. Back skid plat is dry except for a little coolant blown back
3. The engine is completely dry top, bottom, front, and back. The mechanic used a mirror to look into tight places.
4. The oil pan is pristine. It was replaced last year due to a crack and still looks brand new.
5. Staining on the rear axle beam and oil filter appears to be dried blood and fur
6. Above and underneath found no oil staining
7. No oil in emission/vacuum lines
8. No codes and OBD2 shows everything in normal range
8. With engine running at idle and at 3500 RPM (no load) there are no signs of oil loss
9. Next test (proof) is to top off the oil and drive at highway speeds for a quarter tank then check the oil level
Indeed. Losing a quart every 150 miles or so with no other anomalies is even further beyond ordinary. Check out my progress report moments ago.FWIW, these cars normally don't use much or any oil, even with the 10K oil change interval. Being 2 quarts low is really out of the ordinary.
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