By Paul Grazier
Ok guys and gals here is a NOTICE for my fellow Ford truck lovers. I have found a warning concerning the Mazda M5OD transmission. This warning reads as follows:
M5OD Mazda Design Manual Five Speed Transmission
Those of you who own Ford full size or small size trucks with the M5OD Mazda design 5 speed manual transmission should have the rubber shift cover plugs resealed at your earliest convenience. A common occurrence with this model transmission is the rubber plugs shrink over time and allowing lube oil to leak out of the transmission. This occurs while the vehicle is in operation, so there is less of a tendency for a puddle to develop when the vehicle is sitting parked. The result to the transmission is a lack of lubrication and damage to some very expensive gears and bearings. This is a very prevalent problem.
Please get it taken care of before you are added to the casualty list.
The above warning can be found at this website:
http://www.drwtransmission.com/info.htm#M5OD%20Mazda%20Design%20Manual%20Five%20Speed%20Transmission
If you haven’t fixed this problem I too suggest you do so as early as you can. I ran into this problem and noticed my M5OD was leaking fluid steadily when I was driving. A witness was able to confirm this as they drove along beside my truck. The transmission won’t leak if the truck isn’t in motion or in use. You can fix this problem yourself and it should take you around a day to do so. I did so because every autoshop I called wanted $260 to $285 to replace $10 worth of parts (a set of three rubber plugs).
Here is a list of items you will need to perform this repair.
Here is what I did to fix this problem:
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