now i see where your name came from...sorry can't offer any help though but good luck with the problem

 

Thanks to everyone who has replied in this thread, your feedback is greatly appreciated.

RED MX5, i have definitely ruled out the possibility of a leak as i have a clean piece of cardboard on my garage floor underneath where the car is parked, and my coolant has also checked out clean and free of oil.

When i take my car to the dealer for the next oil change i will be switching to a conventional oil, and as suggested i will also inquire about getting a leakdown/compression test performed on the car.

Furthermore, I may also look into upgrading PCV valves as S-turn AP1 has done or installing krank vents as an alternate solution.

I will keep you guys updated on my findings in case others with similar issues are interested in the causation of this oil consumption.

 

stop shifting at 10,000 RPM!

 

One thing I didn't think of before; Have you taken a look at your spark plugs? You could have a problem that is limited to one cylinder, so knowing what the plugs look like might be helpful.

Honestly, if you were burning a quart every 1000 miles I'd be less concerned, but a quart in 500 miles is a bit much. Hopefully it's nothing major, and changing to a good dyno oil will reduce it to a more acceptable level.

Keep us posted.