When I first bought the car, it would only burn 1qt (L) per oil change (3000 Miles). Over the past year it has crept up to double that, so I figure they are starting to wear.

When it gets to 1qt per 1000miles, I will do a valve job on her.

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William
76 240D (W115) - 550K miles
78 300D (W123) - 200K+ miles