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Old 05-13-2008, 07:25 AM   #1
Scooby Specialist
Member#: 128002
Join Date: Oct 2006
Chapter/Region: International
Location: The moon
0000 four door sedan
Poop color

Default drivetrain fluid change..?

I'm thinking about swapping out all of my drive train fluids (tranny, center diff, rear diff) with redline 75w90 gear oil on my 07 2.5i.

My 5th gear has been very touchy lately and I want my drive train components to last as long as possible. Anyone have any experience with this product?

Also, there 2 different products. There is regular 75w90 and theres 75w90 ns. Which one would better suit my vehicle?

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Old 05-13-2008, 08:53 AM   #2
Scooby Guru
Member#: 21808
Join Date: Jul 2002
Chapter/Region: E. Canada
Location: National Capital Region
02 GroceryGettAr
Nonemore Black


The NS (not slippery) is more suitable for your gearbox - the regular stuff has more friction modifiers, the synchros don't like it. You can put either in your rear diff.

Just fyi, lots more info if you search 'redline' and/or '75w90ns' in the Transmission forum - also mixed views on what fluid is best (OEM, synth vs dino, GL4 vs GL5) especially for synchro problems.
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