Quote:
Originally Posted by TheRuss
OK, so I finally gave in and decided to order the Pentosin, rather than the Redline. I thought I'd try to stick to stock, but just refresh it, as then I know I'm kaing an improvement (clean fluid) without any risk to the fluid not being designed for the gearbox. If I don't notice any particular improvement then the Pentosin has also made a good flusher in preparation for trying the Redline MTL, so either way I'm happy enough. I figure best to start with the fluid that's closer to OEM spec though, to avoid mixing the transmission fluids up too much. As the Pentosin is supposedly OEM fill, it doesn't get much closer than that!
One question I have is how much fluid does the transmission on the 135i take? All the DIYs I can find are either for 128is, or don't mention it exactly.
I ordered 4 litres and hope to be able to change the fluid twice in quick succession to get all the debris out. I'm thinking about 200 miles between flushes should do it.
However, if that's not enough then I need to add another litre to my order quickly! I'd rather not though, if 2 litres is enough?
Anybody got the exact spec?
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Which engine do you have?
N54 6MT holds just OVER 2 Liters.
N55 6MT holds just UNDER 2 Liters.
WHEN you change your trans fluid, make sure you just drove the car(or an hour or so afterwards) and drain the fluid. FIRST remove the FILL plug incase you can not remove it - the last thing you want to do is drain all the fluid first and then realize you are stuck!
After all the fluid have drained from the trans... keep filling the FILL HOLE until fluid spills out - then close/put the fill plug hole back on the trans. The trans holds just under/over 2L's depending on which engine you have.
Dackel
PS: Won't you also change your diff fluid as well? The diff holds just over 1.2L's.
