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I tried the search feature and FAQ but is there any limit on how much HP your car will lose over many thousands of miles without an oil cange? I've noticed after buying used cars and after running my Minolta for about 800-1200 miles at a time without an oil change that I may get a HP boost of anywhere between 3-118HP from an oil change so far depending on car, horse power and mileage. I'm just wondering if the car will hit a limit of how much it'll lose before it hangs around that number forever until you get an oil change?
Also when you change the oil will it always bring it back to when it was brand new or does that continue to get lower as more miles are piled on?
Thanks
Also when you change the oil will it always bring it back to when it was brand new or does that continue to get lower as more miles are piled on?
Thanks