Quote:
Originally Posted by cab83_750
For reference, Porsche will tell you that 1qt/1000 miles is allowable.
So if your Z used "some" oil (or no oil at all), consider yourself lucky.
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That's the general rule of thumb for most manufacturers. My 2010 roadster started out consuming oil (got it with 2.4K on its ticker, probably with factory fill still and it was > 1qt low when I first checked it). Based on my driving conditions, I run 6m OCIs and by 20K consumption had fallen to 1 qt between changes of about 5K miles.
I have run up to 7500 mi on a OC (always using 5/30 Pennzoil Ultra to date). 38K now, added .5 qt after about 4K miles
This is completely normal for any car IMHO.
- b