To begin, I drive a 1997 Acura 2.5 TL. It's got an Inline 5 (yes, five), SOHC, compression ratio is 9.6:1 I believe. I don't have any of the history on the car before 125k, but have replaced most major fluids in the 20k that I have owned it.
The car originally had a single, small, oil leak...