1,6,7,8 - Series and Mini CooperGeneral Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.
im trying to search for info - but if anyone can tell me what the stock MODEL TRANS i have in my 84 733i that would be great -
and what is the BEST TRANS FLUID and HOW MUCH is required for complete fluid change
darkhorse737, I have downloaded a pdf dated 2006 from ZF where they list Dexron 2D for the 4hp-24. Spec TE-ML 11
I am not disagreeing with you because everywhere else on the web they specify Dexron 3, but ZF Spec. TE-ML 11 calls for Dexron 2D for the 4 speed plus lockup torque converter and Dexron 3 for continuously slipping torque converters, which the 4HP-24 is not. In an E32 750il the torque converter locks up at about 110 km/h with the effect of an overdrive kicking in. This site explains it better.
Did a fluid change on a ZF 4hp24 transmission last night. Dropped the sump- 6 bolts and dipstick pipe- removed the filter and opened it up. It's spot welded on three corners so cut the corners off and unfolded the edges with a side cutter. I'm glad I did this because the area under the hole to the valve body had about two teabags full of friction material accumulated there. I washed it clean with petrol and folded it all back together, as good as new. Re-assembled and filled with 4 liters Shell Dexron 2D and did a test drive. The transmission works perfectly, but, unless it was repaired at some time and the old filter was refitted without being cleaned, I don't know. At least I know that there is a good chance that one of the clutch packs will start slipping in the future, and I will know why.
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