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      01-24-2021, 12:59 AM   #11
Thunderguts
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Drives: 2009 128i Sport MT
Join Date: Jul 2018
Location: DFW

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Quote:
Originally Posted by Papa Popov View Post
Do you prefer D4 or D6? I'm in a pretty warm climate as well, but temps do drop below freezing on occasion during the colder months.
I've used stock fluid, Redline MTL, GM Syncromesh with modifier, and Redline D4. The MTL was too thick in my opinion and shifts were way too stiff. GM Synchromesh was also too stiff, but a little bit better than MTL as I recall. Redline D4 is the best I've found so far. I also have the short shift kit so my shifts will always be a little stiff. I can't imagine that I would prefer D6 which is even heavier. The D4 is acceptable when cold and it warms up in about 5 minutes to shift normally.
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