Red Line 50204 SAE 75W80 API GL-4 Manual Transmission and Transaxle Lubricant (MTL) Car Gear Oil - 1 Quart (12 Pack)

I have an '07 BMW 550i with a stick shift that I picked up this past summer. No idea when or if the transmission oil was last changed. The gearbox mostly shifted fine, but there were times it was reluctant to go into gear, and crunched a weee bit on occasion, so I figured a transmission oil change was a good first step. BMW, of course, only recommends their own $50+ per liter solution, but this redline MTL was recommended on a couple of sites / forums @ half the price. Oil change was stupidly easy, with the worse part being the removal and reinstall of the underbody tray. Note that the car does need to be level in order to refill the gearbox properly, so that may be easier for some than others. I am fortunate enough to have a lift, so it was <30min job. It took a full 2qts, so if you have an e60 V8 BMW manual, you may want to grab a 3rd qt just in case you have some spillage. There are plenty of online videos with instructions you can search for help. The old oil in the gearbox was definitely well used, but not so terrible that I would believe it to have been the original oil. BMW has this stupid concept of "lifetime fill" with transmission fluid for the past ~20 years. This obviously discourages proper maintenance, so it really wouldn't have been surprising to find original fluid in a 16 year old car with 110k miles. I did the differential fluid as well with the redline oil recommended for that application. I did not notice much of a change the first couple trips after the oil change, but after 50-100 miles, I could definitely tell the difference. Every shift has a more "syrupy" feel to it, and the shifts slot into place with a more positive action overall. This gearbox still doesn't like to be rushed. This MTL fluid won't turn your BMW into a Honda, but it definitely works well and costs a lot less than the "genuine" oil. Definitely a worthwhile job to perform yourself, if you are able, and a great product to improve the driving experience.

It arrived on time at a fair price and the product totally changed how my 2002 Miata shifts I am extremely happy with it

I recently had issues with my NV3550 making noise and shifting rather difficult at times. Flushed my transmission and installed this fluid and wow what a difference. Shifts like it's new and no more grinding when shifting. Highly recommend for Jeep TJs with manual transmissions.

So here's the story. I have a 2007 Honda Civic with the 5 speed manual trans. It's a good daily driver all told. At about 90k miles it started getting tough to get into second gear. Sometimes the synchro refused to spin up the gear before engaging leading to destructive "gear" grinding, other times the blocking ring would not get out of the way of the dog clutch teeth. It quickly got worse to where 2nd was practically unusable at 95k. Damn!! A Google search showed that I was not alone; in fact I was part of a huge mob of unhappy Civic owners. A reman trans with installation will ding you roughly $3000 USD plus or minus (and that's without a new clutch and throwout bearing which you'll want to do if you're in there). For a 10-ish y.o. car that made me gag, and quite unhappy too. The specified oil change interval is 120k miles so I wasn't there yet. The Honda fan boys who had the same problem said that draining the trans oil and refilling with the specified Honda lube did nothing beneficial (except putting a few bucks into the mechanic's wallet). But they also said that draining and refilling with Red Line MTL *did*. So I popped for 4 quarts (the Civic manual says it takes 1.8 quarts but it is really about 2 quarts)....2 quarts to try it out and 2 more in case I wanted to change it again "down the road", so to speak. And it worked! It's not perfect; about once a month I can feel it balk going into gear so I move the lever back to neutral and try again, and then it goes in. It's a whole lot better than a spendy transmission replacement. The car has about 107k miles on the clock as of this writing. If you're one of that unhappy mob as I was it's worth a try. A quick note: Whatever lube you feed the trans, make sure it's rated GL4 and not GL5. GL5 contains a sulfur additive and will slowly consume "yellow metal" alloys which the synchro cone clutches are faced with. If it says GL5 and also meets GL4.....NO GOOD. It has to be only GL4-rated. The Red Line is the proper GL4 formulation.

Noticeably smoother after replacing fluid.

Absolutely the best! Shift quality is even better than the O.E. lube. Especially below 40F degrees. O.E. fluid was slightly notchy below 40.

Used to replace fluid in 2012 Mazda 3 6 speed. No noticeable change but not worse either. Used a little over 2 quarts. I’d rather use this than the cheaper options.

This product is nothing short of awesome! I have been a sports car enthusiast for 30 years, and in that time I have owned many performance cars, as well as working in the automotive field for 20 years. I used to live by the rule that their is no chemical fix for a mechanical problem, but this gear oil did do just that in my situation. I purchased a 2007 Civic Si a little over a year ago, just to have something a little sporty to drive around town, and also be reliable (Honda ;) ). I learned that the third gear synchronizer in these cars were notorious for problems, and there was even a service bulletin issued by Honda that recommended replacing the synchronizer in the transmission, which calls for around 12 hours of labor. I have always ran synthetic oil in my vehicles, and after researching gear oil I came across Red Line, and also read some reviews by other Si owners stating this product solved their 3rd gear problems. Well, I gave it a shot, and yes it did fix this specific issue! This is also the first time I have used synthetic gear oil in a transmission before, and I can say that it is nothing short of amazing in the difference when it comes to shifting between all of the gears! Other than the 3rd gear issue in the Honda 6 speed I had no problems before changing the fluid, and their was only a little resistance to speak of when shifting gears. After the change, there is almost no resistance at all! Smooth as silk when shifting gears now. I would highly recommend Red Line to any car enthusiast, and though it did resolve my synchronizer issues as I said, this product is not a miracle fix for all transmission problems. I will be replacing the manual transmission fluid in my 525 horsepower muscle car to Red Line next.

Excellent service and product. Haribo sweets is a nice touch with delivery but could do with a bigger bag 🤣

並行輸入品とのことですが、容器も全く傷などなくきれいなものでした。 梱包も問題なく、配送トラブルなく迅速な対応でした。オイルそのものは 評価の基準がなく、変速時のスムーズさは交換前より心なしかちょっと良く なった感じがします。

El producto es 100% original de excelente calidad, la funcionabilidad en la transmisión es fabulosa producto 100% recomendable

Amazing product

Utilisé pour un renouvellement de l’huile de réducteur d un Kona ev Plutôt un bon rapport qualité prix Viscosité un peu plus élevée que l’origine Utilisé depuis 30000 km environ, Rien à signaler depuis