I have a Protege5 Mazda, I always took the car to the dealers to have the oil changed. I was sick of them overfilling it and them having to pump about a quart back out all of the time. So I took it to one of those Jiffy quick oil change places and guess what? When I checked the oil the next day it was at least 1 quart overfilled. Before each oil change I discussed with both companies of overfilling and they always tell me it takes 3.7 quarts and they won't put in any more than that. This has happened to me now at least 8 times. Maybe the wrong dipstick is in my car? I have no clue..any ideas?
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