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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
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.