Z Broke Down :(

rackley

My last car, an E320 CDI has an oil change interval of 15,000 miles.

How many quarts did it burn in 15,000 miles? Couldn't even tell - the dipstick was still in the middle of the range. It's a turbo too.

What separates a car that burns 1 quart every 2000 miles (mine just did - I had to refill it today) from a car that burns 0 quarts every 15,000 miles?

* Engineering design
* Manufacturing tolerances

Nothing else needs to be said. There is no arguing about it, like you stated. It's a fact that one or both of the above factors was not a priority with the Z. I love my car, but the fact that it burns 1 quart of oil every 2000 miles, and this appears to be common, says something pretty profound about the engine either from a design or manufacturing (or both) perspective.