Oil Change Interval

It takes a long time for oil to go bad just sitting. Most of the degradation comes from the heat, deposits, and moisture it helps to trap.

I'm up to 7500 miles on changes, which is what the default oil life in the car is set to notify [not something that can be adjusted apparently, factory set]. Figure I don't drive it that hard and plausible deniability if a warranty claim is needed. "The car was telling me when".
 
^^^I like that. hadn't noticed that 7.5 thousand miles was the maximum interval we can set to. interesting.
It takes a long time for oil to go bad just sitting. Most of the degradation comes from the heat, deposits, and moisture it helps to trap.

I'm up to 7500 miles on changes, which is what the default oil life in the car is set to notify [not something that can be adjusted apparently, factory set]. Figure I don't drive it that hard and plausible deniability if a warranty claim is needed. "The car was telling me when".
 
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I have an oil change for Friday, 13 months since my last oil change. I just turned 73,000 miles, c. 7K miles short of 9,000 miles since my last oil change. This is with Mobil full synthetic. I checked the color and it is dark, of course, but still very clear looking and smooth not going gummy. I think that full synthetic is good for 12K miles or more unless you really beat the crap out of your engine or spend most of your time in stop and go traffic. If you are on highways and the freeway a lot - I am - then every 6K miles or 12 months is a generous amount of caution.

But I won't deliberately go over 6,000 miles or 12 months. This time I was focused on 12 months between changes and the miles got away from me, a bit. I was actually surprised just now when I checked the miles in my last oil change last October and saw that I was that much over 6K miles. I went over the dealer-set 4K miles on an extensive road trip once, by about the same amount that I am over this time, and they didn't say anything. That was before KIA started putting full synthetic in too. I noticed back then that the oil got really dark, darker than it is right now, even between 4,000 mile intervals. Full synthetic is definitely a noticeable improvement on oil longevity.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
On my last car (2009 Acura TL) it has an oil change equation built in based on miles, starts, stops, speed (who knows). But my driving generally had it come in around 10,000 miles. Still have the car (my son has it now) and nearing 200,000 miles with no problems. Of course that's not a turbo... But not full synthetic all the time either.
 
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