Thread: ZF auto oil flush

im a weekend or 2 away from doing that myself. what type a fluid do you use? i went to super crap and they dont stock DXII

Dexron 2d is the same. I use the castrol transmax fluid. Do not use a synthetic as the valve bodies do not like it!

Remove cross member (good luck), drain fluid, replace filter and put pan back on (good luck with the gasket). Replace the amount that came out, then check the level. Normally about 4lt comes out as the rest is held in the torque convertor which wont drain. I generally do two flushes and replace the filter on the second flush.

Not sure what you mean with the oil cooler line?

just confirming this is it?

Cross member is simple...

Raid one of your daily drivers for the scissor-jack. Find a lump of wood of suitable length, insert both between the chassis rails and wind them apart enough for the member to come out.

- Removing the bolts first really makes it easyl,,,,,

Originally Posted by benji

Not sure what you mean with the oil cooler line?

if you pull a cooler line off then fill it at pretty much the same speed it pumps it out you can flush the whole system including the converter.

i would flush it with some cheap stuff, then put cooler line back on, drain a final time and refill with correct fluid.

Originally Posted by Vanderz

just confirming this is it?

NO !!!! Transmax M is a replacement fluid for IID ... The 4hp14's used to ***** themselves and die 'cos people put Dexron III in them (it turned black an the box would die by 80,000kms). Transmax Z is the synthetic fluid... apparently a "better" replacement for transmax M/Dexron IID boxes. My friend had a fully rebuilt 4HP18 running on Transmax Z, it's valve body played up a lot until he drained the very expensive Transmax Z out and filled it with Transmax M.

I remember reading recently that transmax M had a name change, it stated on the bottle it replaced transmax m though.

seeya,
Shane L.

am i on to a winner?