



K&W 402508 Trans-X Posi Trac Limited Slip Gear Oil Additive - 7 Fl Oz
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Debbie
> 3 day:)
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HARRY M
Greater than one weekIf your Porsche Cayenne transfer case starting to have chattering/locking up issue during cold or morning start when you turn the wheel sharp OR you noticed your rear tires wearing out way faster than the fronts, add a tube of this additive to the transfer case during the transfer case oil change. This solves the issue !
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Stewart Parmelee
> 3 dayWorks great for my Detroit Locker
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Indetrucks
Greater than one weekInstalled new gears which I purchased here and since my 67 GTO has Safe-T-Track, it requires this additive. Works as it should, just pour the complete contents into the rear end prior to filling with fluid. This helps it mix itself when you add the diff. fluid (which I also purchased here).
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Morgan
> 3 dayGreat product
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MonzaMan
07-06-2025Many vehicles need this, check if your project requires it. I use it when necessary and it is a great additive.
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Pop N Wood
Greater than one weekA tube of this and fresh Mobil 1 diff fluid fixed my horrendous LSD chatter problem. Based on internet posts was originally looking for Ford friction modifier but have always had good luck with CRC products. Did not disappoint. Drives like a new car, doesnt fight me in turns anymore yet still locks up tight when really hit it. Replaced Royal Purple synthetic that said it had the modifier, but guess it wasnt enough.
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Md Male
> 3 dayThis stuff works!!!, My rear diff. in my 04 gmc yukon 5.3 L had a whinning sound when making sharp turns, I had the fluid in the pumpkin replaced a few days ago and it was still making the whining noise going into a sharp turn so i picked this stuff up at a auto parts store in my area , i had not heard about this stuff prior to buying it, but wanted to give it a try at only 8 bucks a tube, so i added some to the fill hole on the rear diff and drove about 20 miles to mix the additive with the rear diff fluid, well and i also went into a parking lot and made some sharp turns and presto noooo more noise!!!! im a happy camper!! I wanted to give this stuff 5 stars because im that impressed, but i`ll see how long it holds up.
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favesauto
> 3 daytrans-x posi track additive have used this for years with no bad results
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William Wallace
> 3 dayMakes slippery things slipperier