I have an 88 bronco II 4x4 with the mitsubishi 5 spd. manual transmission. I was wondering if any one could tell me what's the proper lube to fill it with? I've been told gear oil, atf and a mixture of both. I'm using gear oil right now and it sure doesn't like the cold. Thanks

 

The proper lube is Ford Part No. F2ZZ19C547-A it is a synthetic lube.

 

I had the same tranny and it went bad (real bad). The rebuild shop told me to use 15w40 engine oil. I asked if 15w50 Synthetic Castrol would be o.k. He said that would be even better. If you do run engine oil you have to change it a little more often. I put 30,000 miles on mine before I sold it and it still worked fine. Yes,gear oil makes them shift pretty stiff in the winter.

 

[font size="1" color="#FF0000"]LAST EDITED ON 07-Sep-00 AT 07:38 PM (EST)[/font][p]Please be careful in getting the proper lubricants.

According to the Ford factory shop manual for my 90 Bronco II, the proper lubricants are:

Mitsubishi 4sp: SAE 80w-85, (Ford p/n D 8 DZ-19C547-A, Ford spec ESP-M2C83-C).

Mazda 5sp: Mercon ATF, (Ford p/n XT-2-QDX, Ford spec: Mercon).

I don't believe they used a Mitsubishi 5sp, at least not in 90 & later. My 91 Tbird SC has the Mazda 5sp in it, same as the little trucks.