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Originally Posted by polarzak
I believe it does factor in driving conditions.
Mine goes to about 6k and I believe this is due to the fact that most of my driving is highway. Even at 6k the oil is still clean. I would guess if you do a lot of city driving (stopping and starting) the time between oil changes would be much lower.
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Hello
The Oil Life Index also looks at how you drive. Do you have a lot full throttle starts off the line? Does the engine spend a lot of time red lined? This will decrease the amount of miles before the light comes on. I've never gone the full time with my 97. The oil is dark and needs changing at 3000. I don't drive it hard. Maybe this is why I only get 23 mpg.
Regards
Dan