91' Ford Ranger 2WD 3.0L V6 5speed manual 162,000 miles.
Not sure of the trans code. Mitsu or Mazda? Anyone know...
Really never post here on the forums, but I am a long time Ranger owner. For about two years my Ranger has been leaking from the rear of the transmission. Recently I refilled the case with gear oil 75W/90 because the trans was starting to whine and shifts were a bit notchy. Well, most of the fluid I have added has leaked out again. Today when I was changing the motor oil and filter I decided to look into the trans leak and I noticed that it is coming from the rear of the trans towards the top is where it is really messy and wet. For the longest time I thought it was the seal at the end because thats where the drip was coming from, but after researching I found out that the problem could be the three shift rail plugs on top.
Anyone change these plugs ever? Looks like its a common problem on this model trans, so was wondering what you guys have done to fix the leaks. If I were to drop the trans, I would might as well replace it, its kind of worn I bet from running out of fluid, but still gets me around OK, input shaft is a bit noisy when the clutch is disengaged. I am looking for the cheapest fix, was thinking I could take out the shift boot and reseal the plugs from the top then refill the gearbox.
Also what is the proper fluid for my trans? I am using 75W/90 dino gear lube but have heard that others use ATF Mercon III
Pics of said shiftrail plugs: (Not my trans)