I'm a bit farther along in the failure process. I'm at a quart every 300 miles and it has been holding at that for the last 6000 miles, currently I'm at just over 160K miles. I bought the car at 130K miles and it was using a quart every 2000 miles. Just watch your consumption. A quart per 3000 would be normal and acceptable for many 603's.

I did a compression check recently and the cylinders were all in the 420-450 range if I remember correctly. The car starts and runs great, it just kills all flying bugs as it goes by. So that doesn't seem to be an indicator of wear in my case. Do others have different observations?

Chuck