Bought my Avant 3 1/2 years ago with 68k and now have 168k. I have always used about a quart to 3k miles more or less. (I am chipped) Mobile 1. My turbo hoses always have a little oil in them. My 87 5000 Avant used about 1/3 qt. over the same miles (also chipped). Even until I sold it at 286k. Pete