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Red Line (50305) Manual Transmission (MT) 90W Gear Oil - Synthetic Gear Lube - 1 Gallon

Red Line (50305) Manual Transmission (MT) 90W Gear Oil - Synthetic Gear Lube - 1 Gallon

Red Line (50305) Manual Transmission (MT) 90W Gear Oil - Synthetic Gear Lube - 1 Gallon
$ 60.26

Score By Feature

Based on 1,327 ratings
Satisfaction
10.02
Giftable
9.74
Customer service
9.83
Delivery
9.51

OveReview Final Score

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Product Description

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HIGH PERFORMANCE - Gear protection and longer synchro life; recommended for GL-1, GL-3, and GL-4 applications, as well as applications requiring the use of most special synchromesh fluids.
PERFORMS QUICKER SHIFTS - Superior gear and synchro protection, as well as a balanced friction control system
SAFE FOR BRASS SYNCHROS - GL-4 Gear Oil is free of the reactive sulfurs that cause damage in most GL-5 oils. GL-1, GL-3, GL-4, GL-5, GL-6, GL-7,
Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, and Mendeola transmissions are among the most popular motor oils.
WHY RED LINE - Since 1979, Red Line Products has been a leader in the industry. There will be no compromises.

Questions & Answers

Is it possible to combine glucosamine and glycine? 4 gl- gl- gl- gl- gl gl Is there oil for a fifth gear? What is the difference between the two? Do a 50/50 split if you want to be safe. will they get along? What are your arguments for and against?

NO NO NO. GL- 4 is reserved for older transmissions with bronze/brass components. GL- These parts will be DESTROYED by 5. I can tell you from personal experience that this is true. GL- was mistakenly assigned to me by my neighborhood speed shop. My 91 Jeep YJ with the X-plane gets a five. 5 trans. I could smell the issue happening from ten miles away. They compensated me for the error by giving me a gallon of the proper GL-80. 4 As a result, at 150K, my X5 was shifting a lot better. It's in the shop now at 185K for a trans rebuild (yeah, it's been that long), and Troy Transmissions was happy to hear I wanted Redline, as he insists on synthetics for Arizona heat, and drivers who get in extreme conditions should look up the "back way to Crown King" for an idea of what we're up to. Also, a warning to the Y's proprietors. Be wary of places that offer quick lube. I went to two different stores, both of which insisted on GL- The right lube was number five! NOT! Fortunately, the $450 they demanded for fluid changes scared me away, and I did what all Jeepers should do. You should build your own rig.

Is the MT 90 transmission suitable for a 1995 Jeep YJ?

Yes, excellent product; I purchased the vehicle used and didn't know what kind of transmission fluid it had. The jeep sounded like a bus, and when I added the MT-, it sounded like a bus. There is a significant difference, and, more importantly, there is a significant reduction in noise.

Why do so many people advise against replacing old gear oil?

Automatic transmission fluid is what they're talking about. Automatic transmissions have a series of "bands" with clutch-like materials bonded to the friction side, which have already smoothed out and slipped in a worn-out automatic transmission. Because automatic transmissions are powered by hydraulic pressure, the "gunk" suspended within the old fluid will aid in the "gripping" action of these bands. This redline gear oil is used in manual transmissions. This isn't the case, as the old adage goes.

Is this product compatible with my 1975 VW Type 1 Beetle, which has an 85w/90 gl-rated engine? Is there oil for a fourth gear? or do you have a product that is synthetic?

I'd check the Volkswagen website or contact a Volkswagen service department. You can play around with weights in engine oil, but I wouldn't put the wrong weight in a transmission.

Selected User Reviews For Red Line (50305) Manual Transmission (MT) 90W Gear Oil - Synthetic Gear Lube - 1 Gallon

For my 1990 Toyota Pickup, I use gear fluid
5/5

I purchased it because, as others have stated on Toyota forms, it is the best. Let me just say that they are not lying. This fluid nearly brought my old (245k mile) transmission back to life, despite the fact that it had been neglected by the previous owner. If not shifted JUST RIGHT, it would pop out of first and grind its way into second and fourth. So now that the fluid has been changed and the shifter bushings have been replaced, the trans runs much better than it did before.

Jace Fernandez
Jace Fernandez
| Sep 02, 2021
This gear oil is fantastic
5/5

After a rebuild, the manual transmission in my 1999 XJ (Aisin AX15) was quite noisy. Most of the time, I just learned to accept it. But then I heard that this stuff was actually magical and worth the extra money. Without hard evidence, there was no way I could believe such nonsense. But I had an Amazon credit and was in desperate need of a fluid change, so why not? WOW. I'm now convinced that the hype is true. This is something I should have done right after the rebuild. It's been quieted down, and instead of a choppy shift, it's now silky smooth. I'm still not convinced. Now I'm trying to think of other things to do with it. In fact, I poured what was left in the bottle into a vintage handheld squeeze pump oiler I have and use it to lubricate everything. br>br>I can't promise that this will solve all of your problems, and I've heard that some people were disappointed, especially given the much higher price tag. However, this is fantastic material in my opinion. I'm not sure what kind of pixie dust they used, but at more than twice the price of competing gear oil, it's still well worth it in my opinion. I'm never going back to using anything else.

Maxwell Hurst
Maxwell Hurst
| Feb 12, 2021
Mazda3 - Use GL- 4 NOT GL- My manual transmission fluid in my 2010 Mazda 3 6-cylinder had just been changed
5/5

sp and found the transmission to be very stiff and truck-like. I'd had the same experience after purchasing it, and I'd liked to shift after the service. Then it occurred to me that the shop might have written GL- on the package. In place of GL-, put 5 in. Despite the fact that I had double-checked the number at the shop several times, it was still 4. br>br>It turned out that my suspicions were correct. I purchased the Redline and returned it to the shop, demanding that the Mobile 1 transmission fluid that had been installed be removed. br>br>The difference between night and day. While using Mobile 1 for engine oil, I learned from another technician that Mobile 1 was a GL-rated product at their shop. 5 oil- not with the GL- 4 I'd asked for and received confirmation on several occasions. br>br>Now the shifting is as smooth as butter. No notchiness, and it's smooth. br>br>It's as if the transmission has been replaced. br>br>Helpful hints-- even if the store claims it is GL- I'd recommend taking the correct formulation's bottle to whichever store you go to. and handing it over to them with instructions on how to put it in- supervision - Unless you're willing to do it on your own.

Rebekah Houston
Rebekah Houston
| Feb 11, 2021
Now is the time to get started
5/5

This is absolutely incredible stuff. I'd even go as far as to say that it's required in any manual transmission. After three years and hundreds of thousands of miles in a Nissan transmission, it shifts like new. So easy to work with. It also made shifting a breeze in a Toyota that I was concerned had a bad tranny with 1st and 2nd synchronizers and a super whiny 5th gear. The noise level in 5th gear increased dramatically. Gl- 4. Only the brass syncronizers have a low sulfur content. Redline isn't the same as snakeskin oil. You'll be amazed if you pay the price and change the fluid. There aren't enough good things to say about you that I can think of.

Beau Cabrera
Beau Cabrera
| Aug 12, 2021
With Redline products, you can't go wrong
5/5

Without a doubt, this is one of the best manual transmission oils available. Although it is pricey, Amazon appears to have the best deals. The most cost-effective option appears to be buying by the gallon. br>br>In terms of performance, you'll notice a significant difference in the way the shifting feels, which is smoother and easier overall. It's what I use in my rock crawler, so believe me when I say it's good. The oil is put through its paces! I've never done a proper lab test to see what impurities are in the oil after use (which is really the only way to tell what's going on inside the transmission), but it always comes out clear and like new. Previously, when I used lower-quality oils, the oil always looked filthy after an oil change.

Mario BURROWS
Mario BURROWS
| Nov 12, 2021
Garbage for the upcoming winter season
3/5

In my manual 2009 Jetta, I did one drain and fill (only drained and filled once). 5 qrts) and noticed that it took a few minutes for it to shift smoothly on cold starts, now that temperatures have steadily dropped from 60 at the time to 24 now, it is absolute junk in cold weather, today it was 30 and it was so choppy and hard to get in gear in the morning, this may be OK gear oil in warmer climates but forget about it in cold climates, now I'm stuck with 3. I bought 5 quarts of this and would not recommend it to anyone; my car was shifting fine before, so I figured I'd change the oil to be safe at 60k miles since my clutch was replaced. mistake.

Marlon Merritt
Marlon Merritt
| Dec 01, 2021

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