Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL)- 1 Quart (12 Pack)

Wow, I am shocked!So I've been dealing with my gears grinding in 2nd and 3rd for the past 1 1/2 Years in my manual 2005 Scion XA the car has had the problem since before i bought it, The previous owners replaced the clutch, And I'm assuming that someone had added extra gear oil, Because it spilled out when i took off the fill cap on ramps, I've been trying to figure out the grinding, For the past 2 years doing everything but trying to put a new clutch in, Previous owners also stated that the mechanic may have put the clutch in wrong, I guess he didn't, Because this nearly completely fixed the issue in under 200 miles of driving, Driving has also become much smoother, If you have a Scion XA i suggest changing to this oil regardless if your gears are grinding!You only need exactly 2 quarts for the Scion XA no more no less, I wish all m mechanics would look this up before adding too much oil!I found this out from reading forms on the Scion XA, Everyone suggested this oil for the grinding and regardless! So i hope someone sees it here!

Upgrade for my 2008 Scion xB’s standard gearbox. Ultra smooth shifting. Amazing product.

Changed the fluid out in my Toyota C60 transmission. Shifts smoothly with good function from the syncros.

Replaced the fluid on a 99 Tacoma I just picked up. The shifting was notchy and you had to count to 4 before you could put it in 3rd gear. The old fluid looked 100% when I dropped it and my heart sank. I thought new fluid would not make a difference. I was wrong. The shifts were silky smooth and you could feel the difference right away. 3rd gear acted like it should and no more grinding. I'm not sure why Red Line is so much better, but if you are not using it...sucks to be you.

Great product. I've been using it for 217K miles. My transmission still works like new.

Makes my old AX-15 shift better than a new one. The synchronizers in that old transmission didn't like the standard gear oil much, but this stuff has something in it that makes them work so much better. I've never had such ease of shifting than I've had with this.

My 2007 Corolla 5 speed always had a “notchy” first gear engagement when coming to a stop and this was immediately gone when switching to this fluid. Keep in mind when i drained my transmission the old fluid smelled like it was at the end of its life and i have no idea which fluid was in it before as I’ve only put about 15k miles on the car in over a year and a half. Overall I’m very happy with this fluid and it seemed to make shifting overall more smooth. Would recommend

After a lot of online research, I bought this 75W90 GL4 (Red Line 50305 MT-90) gear oil back in 2020 for a 2008 Toyota Corolla with a manual transmission having worn out synchros. Just over 300,000 miles, it would grind every time it was shifted into 3rd gear, and frequently when shifted into 5th gear. When fully warmed up, one could usually avoid the 5th gear grinds and sometimes the 3rd gear grinds by shifting slowly, but this change in behavior related to temperature was rather small—as a rule, grinding shifts had become a regular and unavoidable part of this transmission's existence.It was quite easy to open the fill port and to drain the gearbox. The old fluid was brown and somewhat thick, although thankfully it didn't appear to have any chunks. This stuff was a clearish golden red and a bit thinner, and the transmission's shifting behavior improved immediately after installing this fluid. Now when cold, one could usually avoid 3rd gear grinds by shifting slowly, and 5th gear only ground if one shoved the handle quickly. Once warmed up, 5th gear wouldn't grind anymore, and 3rd gear would only grind if the driver shoved the handle quickly, although the shifter still felt a bit notchy. In cold weather, it would grind more/longer, and in hot summer weather, it barely needed to warm up at all to avoid grinding. Based on my research and this car's history, I believe that the shop that replaced the clutch back at 150k used the wrong gear oil—probably a heavy (like 85W140), generic (or GL5) gear oil that damaged the syncros over the years.For the longest time, I figured that was the best this worn transmission could do without being rebuilt. And then over the last few years, I gradually became aware that fluids have continued to improve since the specs and testing for older cars was done, and one could often upgrade to newer, thinner and more stable fluids for better performance, improved fuel economy, and extended life. I have since started running this engine on full synthetic 0W-16 oil (instead of 5W-30 conventional its specced for) and gained about 3mpg, noticeably less drag when coasting, and much easier cold winter starts in the process. Then I started wondering about the gear oil. Some people mentioned putting Synchromesh in theirs, but I wasn't comfortable going that far—it seemed overly thin and lost the important GL4 designation. I had my eye on the Redline MT-85 at the time I ordered this MT-90, but it seemed to be such a small change, I originally thought I needed thicker fluid to help with the grinding, and the reviews here on the MT-90 seemed more encouraging. Looking again recently (and after noticing how the grinding became quite temperature sensitive with the MT-90), I discovered Red Line made a seemingly perfect 70W75 GL4 (Red Line 50605 MT-LV) gear oil. Long story short, the transmission is now near 400,000 miles and hasn't ground a single time since I drained this stuff out and put that stuff in, even as we're approaching winter in Ohio and have driven it when below freezing several times already. Additionally, the shifter feels less notchy and more smooth, the car appears to have gained another 1mpg, while gear whine sounds the same as it always has.My recommendation (particularly in colder areas) would be to skip this product and just go straight for the MT-LV unless you know for sure you need the thicker oil. The Red Line MT-LV is significantly more stable, being only five points thinner than this MT-90 when hot, and matching the hot thickness of this MT-90 when cold. If your synchros are worn, you need a thinner fluid (to allow for faster displacement/grabbing), not a thicker fluid. I am sharing this here because I wish somebody had told me this several years ago and I could've saved $100 and some unneeded wear on this transmission!

Well not really, but it brought my transmission back to life on the very first drive after putting it in. I can now get back into first and have almost completely cured my crunch getting into second. All other gears are just fantastic.Is it because my transmissions gear oil just hasn't been changed in too long, or is it because this product actually is magic? I'm not sure to be honest, but I will for sure be buying the same thing again next time.Bought for 1998 Jeep TJ and have a small amount left over which is also excellent.

Viskas gerai.

Used it in my safari dicor. Awesome performance. but the price is on higher side.

Reçu dans les temps et très bien emballé

ロードスターND、純正ミッションオイル・ニュー〇〇〇・カスト〇〇〇と交換してきました。数キロ走行時の1速・2速のアップダウンの入り難さに惑わされていました。外気温度が影響するのか？GL規格が影響するのか？私的にミッションオイルのGL規格を知らずGL5を使用してきましたが、しかし、NDの取扱書を見るとGL-4の指定！75W90に捕らわれ、GL規格を無視してきました。極圧剤の添加量がGL-5の方が多い事をネットで知りました。GL4指定の車種にはGL4ですね。カスト〇〇〇はGL-4規格、1速・2速のシフトチェンジの違和感はかなり改善されました。ネット上で、レッドラインのミッションオイルの評価が良い事を知り、レッドラインMT-90を購入しました。レッドラインMT-90に交換後、100ｋｍ程の走行距離後、外気温15℃位で数キロ走行してみて感じた事はカスト〇〇〇と比べると1速・2速のシフトチェンジの違和感は同じでしたが、シフト操作で”コツ、コツ”とメカニカル感に変わりましね。”ヌルッ”感はカスト〇〇〇、”コツ”感は、MT-90ですね。個人的な好みでは”ヌルッ”感の方が好きかな。現在11月初旬で外気温10℃前後ですが、出だしのシフトフィーリングは多少違和感を感じつつも良い感じです。