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Burning Oil - How much is normal

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Old Oct 24, 2018 | 03:12 PM
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Default Burning Oil - How much is normal

I have a 2003 Z06 with almost 90k hard miles. Since the day I bought it with 25k miles I always could smell something burning when running the car at high RPM and more specifically when letting off and letting the car engine brake at high rpms. The other day I got a low engine oil light about 50% in the the 7500 mile interval. I added about 3 quarts thinking it was severely low and it went way over the full line. I suspect it only need a quart/quart and a half. Anyone know how low the oil needs to get for the light to come on

I know these cars have PCV system that takes the oil blow off and burns it in the engine. I was just curios if others experience the oil burning as well. Note the ring flutter issue was fixed before 2003

Last edited by Alexander K; Oct 24, 2018 at 03:22 PM.
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Old Oct 24, 2018 | 04:00 PM
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The only time mine burned any oil was when I crossed South Dakota. 350 miles at 80 to 90 MPH with 95 to 105 degree outside temps. It was down a quart and the low oil light came on.
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Old Oct 24, 2018 | 04:08 PM
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Mine seems to burn 1 qt about every 3000 miles depending on driving habits..
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Old Oct 24, 2018 | 05:28 PM
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1 quart every 3000 miles is normal if you drive hard.
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Old Oct 24, 2018 | 07:45 PM
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Awesome thanks for the replies. I moved into town so now most of my driving is twisty roads and on/off ramps. Never had this issue cruising lower rpms on the highways
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Old Oct 25, 2018 | 09:41 AM
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Mine uses some, but I do drive it frisky. However, it sits most of the time in the garage, and when I start it I'll get some blue smoke from the exhaust. I suspect it's just some drip down from sitting , as it doesn't smoke when started any other time. But your question is good. I do occasionally put a half a quart in, but never paid any attention as to how many miles between doing such.
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Old Oct 25, 2018 | 02:31 PM
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100k miles uses a qt at 4k, easy driving. Notifies me.
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Old Oct 25, 2018 | 03:34 PM
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Mine uses about a quart every 3-4K with plenty of spirited driving. A lot less than my old 350z did
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Old Oct 25, 2018 | 04:53 PM
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I would say a quart every 3-4K miles would be about right with spirited driving thrown in. On mine, hard to say as I just do not put enough miles on the car each year to really show any oil usage. And yes, I need to get it out of the garage more and drive the thing.
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Old Oct 25, 2018 | 07:10 PM
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Dunno - I've never had to add oil between changes - now had it for 21 years. It did get an old fashioned gentle break in tho'.

Last edited by jackthelad; Oct 25, 2018 at 07:10 PM.
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