Question about 2003 Nissan Maxima

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My 03 Maxima (3.5l 255 hp) started burning oil at rate of 1 qt per 1000 mi. One guy at the dealer says this is normal, just keep adding oil, other guy at dealer says 'time to get a new car." Either way, it doesn't sound right, why is it burning that much oil? Checked for leaks, no leaks, car also does not smoke at all, still drives great. I've always used the synthetic 10w40, had regular oil changes. Car has 115,000 miles on it, I expected to get a lot more wear out of this car & I'm pretty disappointed!

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  • Anonymous Mar 16, 2014

    Oil leaking on passenger side but it's not no oil on the motor

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1qt per 1000 miles isn't too bad, all things considered. There is probably some leakage through the piston seals, which is to be expected after 115,000 miles. I would give a good quality leak-fix in a can a try, as they can really help with some of the more minor leaks. If it is a piston ring or seal problem, its an expensive fix, but give a canned solution a go to see if it helps.

Another option that a mechanic friend of mine suggested for my old Grand Am was going from synthetic to conventional motor oil. Synthetics don't generate sludge or buildup, which is great, most of the time, but when mine started to leak oil and smoke on startup he suggested going back to conventional, as some of the buildup would actually help stop the minor leaks.

Posted on Jul 22, 2009

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All cars will lose a certain amount of oil because you cannot seal an engine completely nor do you want to. Oil is lost at the valves, the piston rights and some oil is spread into the intake as blow-by occurs. This is normal to loss a quart of oil within 4,000 miles. However you are using a synthetic oil which is a man made oil and has different charactaristic than regular oil. You will loss more oil using oils like Mobil 1, but that is normal as well.

Posted on Jul 22, 2009

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