Oil fluctuations

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I AM concerned about the oil level in my 2005 Mazda6. When I check it cold in the morning the level is about halfway between the low and full marks on the dipstick. But if I wipe the dipstick, replace it and remove it again, the oil level is shown to be above the full mark. I have asked Mazda for an answer, but I can't get one I can believe. Can you explain it?

Answered by CarsGuide

11 January 2008

Graham Smith

IT DOESN'T make sense for the oil level to fluctuate if you haven't started the engine or moved the car. Perhaps you are somehow pushing the dipstick further down when you recheck the level. If you're worried about it I would have the oil drained from the engine and replaced by the correct amount of new oil as specified by Mazda, then see what level is shown on the dipstick. Remember to account for the oil in the filter when you do it.

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