I threw a rod in my 88, so actually take 70k off the mileage since the engine got replaced... For free!!! I was tardy with oil changes, to the point where my oil guage was jumping around erratically. I had it in for brakes at midas, and asked them to do an oil change, which I paid for. I get the car back and the guage is still jumping, so I ask if the oil change was done, and they said yes. 4000 miles later it threw a rod while driving on the freeway. Dipstick pulled up thick black sludge, I asked the tow truck driver if it looked like 4000 mile old oil. He thought it was much older than that. Turned out the car still had a jiffy lube oil filter on it! They didn't do the oil change I paid for, and thus they paid for a $3k engine replacement.