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Red Line 75W-140 GL-5 is the heavy end of Red Line's differential range: a fully synthetic polyol ester gear oil with extreme-pressure additives and a viscosity index of 191, built for axles that get hot. At 27 cSt at 100 °C it holds a far thicker film than a 90-weight once the differential is loaded up, and Red Line rates its shear stability and oxidation resistance above other synthetic and conventional gear oils.
It exceeds API GL-5 and Red Line also lists GL-6, MT-1, MIL-L-2105E and SAE J2360. Like the rest of their standard range it contains friction modifier for clutch-type limited-slip differentials, and Red Line notes most limited-slip units need nothing extra added.
Features:
- API GL-5+ — the extreme-pressure category for hypoid differentials; Red Line also lists GL-6, MT-1, MIL-L-2105E and SAE J2360
- SAE 75W-140; 27 cSt at 100 °C, 192 cSt at 40 °C, viscosity index 191, pour point −45 °C (−49 °F)
- Fully synthetic polyol ester base with extreme-pressure additives
- Contains additional friction modifier for clutch-type limited-slip differentials
- Red Line's pick where the differential runs hot — towing, heavy loads and sustained high speed
- Red Line lists OEM specifications including Ford M2C192-A and M2C940-A, GM 9985991, MB 235.61 and Toyota/Lexus 00289-75140
- GL-5 extreme-pressure chemistry is what Red Line warns can be corrosive to the brass and bronze used in synchronizers — which is why GL-4 oils exist for manual gearboxes
- 1 US quart (946 mL)
Fitment: A differential and final-drive oil for hypoid units specified for a heavy GL-5, and Red Line's answer where axle temperature is the problem. Red Line lists it for cars and light trucks including the Ford Mustang and F-150, Toyota Tundra and Sequoia, and Jeep Cherokee and Dodge Ram, and against API GL-5, GL-6, MT-1, MIL-L-2105E and SAE J2360 plus OEM numbers such as Ford M2C192-A and M2C940-A, GM 9985991, MB 235.61 and Toyota/Lexus 00289-75140. Suitable for clutch-type limited-slip differentials.
Please note: Do not put it in a synchronized manual gearbox. Red Line states it is not designed for most manual transmissions or transaxles, because its extreme slipperiness may cause synchronizer mesh issues that lead to shifting problems — use a GL-4 oil such as Red Line MT-90, MT-85 or MTL there instead.
Part #: 08352257914 (Red Line 57914)
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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.
