I went to look at the 782D thats up for sale near me. The oil was around an inch above the full mark on the dipstick I got to thinking of why this must be, if a seal goes bad on the fuel pump would diesel fuel drain into the engine? If not I will take some wrenches with me and crack open the oil drain and see what comes out hopefully it is not coolant. Just wondering if anyone has delt with a simular problem on there diesel tractor.