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Red Line Limited-Slip Friction Modifier is the friction modifier Red Line already blends into their gear oils, sold on its own in a 4 oz bottle. In a clutch-type limited-slip or Posi-traction differential it supplies the extra slipperiness that stops the stick-slip chatter you hear on tight, slow turns. Red Line's instruction is to add an ounce at a time until the chatter stops and no more, because too much slipperiness just produces wheel spin and costs traction.
It doubles as a break-in additive. Red Line states it reduces sliding friction in hypoid gears and can bring break-in temperatures down by as much as 50 °F, which helps protect the hardened surface of new gear teeth while they bed in. It is compatible with both petroleum and synthetic gear oils.
Features:
- Limited-slip differential friction modifier and break-in additive in one 4 fl oz (118 mL) bottle
- Dose by ear: add 1 oz at a time to a clutch-type limited-slip or Posi-traction unit until the chatter stops
- Red Line's rates — about 4% to cure chatter in a broken-in unit (roughly one bottle), 4% to 8% for breaking in a new differential
- A further 3% to 6% for non-limited-slip racing differentials and quick-change units running Red Line ShockProof gear oils
- Red Line states it can reduce break-in temperatures by as much as 50 °F
- Compatible with both petroleum and synthetic gear oils
- Red Line gear oils already contain this additive except the NS grades — pair it with 75W90NS or 75W140NS to tune a limited-slip exactly
- Red Line lists it against GM 1052358, Ford M2C118-A and 19B546-MA, Chrysler 4318060 and most imports
Fitment: An additive, not a standalone lubricant — it goes into the gear oil already in the differential. Intended for clutch-type limited-slip and Posi-traction differentials that chatter, for breaking in a new ring and pinion, and for non-limited-slip racing differentials and quick-change units running Red Line ShockProof gear oils. Compatible with petroleum and synthetic gear oils. Red Line lists it as meeting the performance requirements of GM 1052358, Ford M2C118-A and 19B546-MA, Chrysler 4318060 and most imports, and recommends pairing it with Red Line 75W90NS for the best traction, adding modifier until chatter disappears.
Please note: Do not pour the whole bottle in by reflex. Red Line warns that too much slipperiness causes excess wheel spin and reduces traction, and that their gear oils other than the NS grades already contain this additive — so a differential already running Red Line 75W-90, 75W-85 or 75W-140 usually needs none at all.
Part #: 08352280301 (Red Line 80301)
FREE shipping on orders over $400 CAD.
Let customers speak for us
Solid shipping ,good communication ,great product 5stars all the way
First let's preface I have tried three other tuners. Not bad mounting or name dropping as they all were solid tunes. But Daniel just has that magic touch when tuning the 1.6 platform.
The car has a buttery smooth power band making the car feel like a larger displacement six cylinder over a turbo charged car. Plenty of fun to be had at any speed or RPM range.
He will take the time to get you dialed in perfectly for your car. No canned tunes here folks. And if you are a EK1 user three tunes for the price of one simply can't be neat.
I received the Stage 2 tune. Here are my thoughts:
- The shifts are buttery smooth
- I love the auto shift @2000rpm when cruising around town; saves me an extra 2-3mpg overall
- Driving in traffic is a dream now, much better than stock. I don't even hear that annoying shifting fork anymore, lol
- Any and all DCT slips are gone
- The increase in torque limit! This opened up my N75 Stage 3 ECU tune; I can feel the difference. The last time I dynoed, I got 289 lb-ft of torque. But it feels much more substantial than that!
- The clamping force is unreal. I did a run from a dig, and it hooked and slammed through the gears all the way to 7k rpm in each gear. Amazing.
Conclusion: This TCU tune is a must-have. If you have an N75 ECU tune, it is an absolute game-changer! Especially with the Redline MT-LV fluid that I'm running. I can't wait to get my retune with water meth injection. Daniel and the rest of the N75 team are the best!
Works like suppose to be fast delivery after installation 5 minutes drive TPMS sensors lights off everything is normal like from factory 👍👍👍
![Hyundai Elantra N TPMS Sensor Set of 4 [OEM Hyundai MOBIS]](https://cdn.shopify.com/s/files/1/0276/1359/3623/files/359598029_246649464881156_6848003515050026659_n_70x70.jpg?v=1690929846)
Product was very easy to install and what a difference in shifting also n75 was super awesome to deal with will shop here again
After using the N75 tune for a couple of months, I can confidently say that it offers the best value for your money on the market. I've tried SXTH and LAP3 tunes before, but since switching to N75, I won't look back. With top-notch customer support, it ensures your car performs better, turning heads at every car meet.
Been running stage 2 off that bat and had some problems here and their regarding fueling. Daniel has been with me the whole way, answering questions and adjusting tunes while adding revisions whenever asked. He answers every question I ask even when they don’t relate to tuning.
Highly highly recommend N75!
Daniel's tuning and customer service makes this product a 10 out of 10. I'm new to tuning and he made the process a breeze. I literally laughed out loud when I first drove the car after installing the stage 2 tune. I still can't believe the difference.
Love the intake, fitment is superb, instal was easy and best of all n75’s customer support is stellar and way above average!
M45IL Kia Stinger GT 3.3TT Spark Plugs
Hands down best bov I’ve had, I got the part 5207 for trumpet sound and man. You won’t be disappointed. Shipping was fast & easy.
Looks great!
Fast shipping, easy to install, quality built.
Waiting for some more parts then dyno time!
Awesome
Perfect size and great location for the WMI port.
