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      12-26-2015, 11:42 AM   #1
BigRussia
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Redline ATF D6 or D4 for manual tranny?

I'm going to change my 6mt tranny fluid and after researching decided to go with Reline ATF D6. But I've also seen some ppl recommend or use the D4. I read about both on Redline's site but couldn't figure the differences or benefits between them. Which one should I go with living in Miami Fl where the temp rarely ever gets below 75 (its 81 this morning) and is usually steamy hot?

Oh and how many quarts should I buy? I was thinking 3 should be enough?

Thanks!
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      12-26-2015, 12:29 PM   #2
MightyMouseTech
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D4 is a little heavier than D6, so probably a little better in warm climates.

Although, being in Florida I would probably recommend MTL instead. I use MTL in my summer car, and D4 in my winter car.

Tranny takes JUST under 2L, so if you don't spill any, you can get away with 2. Maybe get three just in case.
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      12-27-2015, 02:36 PM   #3
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Quote:
Originally Posted by MightyMouseTech View Post
D4 is a little heavier than D6, so probably a little better in warm climates.

Although, being in Florida I would probably recommend MTL instead. I use MTL in my summer car, and D4 in my winter car.

Tranny takes JUST under 2L, so if you don't spill any, you can get away with 2. Maybe get three just in case.
Cool thanks for the info! I wasn't even aware of the MTL, seems like its a little thicker than the D4.
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      12-27-2015, 02:52 PM   #4
MightyMouseTech
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Quote:
Originally Posted by BigRussia
Quote:
Originally Posted by MightyMouseTech View Post
D4 is a little heavier than D6, so probably a little better in warm climates.

Although, being in Florida I would probably recommend MTL instead. I use MTL in my summer car, and D4 in my winter car.

Tranny takes JUST under 2L, so if you don't spill any, you can get away with 2. Maybe get three just in case.
Cool thanks for the info! I wasn't even aware of the MTL, seems like its a little thicker than the D4.
Yes, the MTL is a little thicker. Tried a bunch of different fluids in my 1er, the MTL is my favourite. A little thick for below freezing temps, that is why I use D4 in my winter car, which I find is a little thin when above 20 C or so.

Although, don't really like the feel of D4 in winter car, may put MTL in that one as well and take it easy when it is really cold.
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