Join Date: Sep 2015
Location: Lindsay, Ontario
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How much oil did the first mechanic get out? Has it leaked before?
I have a hard time believing someone can overfill it so much that it causes issues.
Also, check the vent on top of the transmission, that lets out any air pressure inside the transmission case out. If the vent is clogged the transmission can become pressurized and cause leaks.
2004 Mazda 6s 3.0 5dr. 5spd never ending money vacuum project:
CP-E headers w/catted mid + Magnaflow carback/AEM CAI/3.7L TB/Speed6 springs/RX-8 wheels
AWR 70D Enginemount/CP-E Dogbone/Custom urethane stock trans mount
Ralco shortshifter/Bose w/Auxmod/sharkfin antenna/lots of little things...