Liqui MolyMoS2 Antifriction for Gears | 50 g | Oil additive | SKU: 2019

I used this on a GMT800, chevy tahoe 2005 LT with the 5.3L motor. The rear differential had leaked all the fluid out and was making a grinding noise at 375k miles. I changed the differential cover and put in new 75w-90 fluid as specified by the manual, but after all that work, the noise still sounded like it was low on fluid or something else was wrong.That's when I ordered this product, and when I installed it, I didn't need any special tools other than the wrench to get the fill plug loose. I squeezed the tube and rolled it up from the end, similar to how you do with toothpaste. I was able to get most all of it out fairly easily. It did not make a mess. The additive fresh out of the tube is notable dark-grey in color, which is usually how the oil ends up looking after a while anyway- no harm no foul there!The best part- it quieted up the noise! It didn't completely get rid of the noise, but I can't expect it to work magic on worn out bearings. I do not have it in me to take the differential apart and replace (re-press) the bearings, so this will buy me some more time hopefully before the differential goes bad. Since the vehicle in my situation has so many miles, I'm hoping this will extend the life of the rear-end until the motor/frame/transmission/etc goes bad.I've used other liquimoly products before in my BMW, and I was so happy to see it works well on GM and Chevy stuff too!

Friggin awesome sauce! Pour inyer trannysmission n feel the slippery goodness of shifyshiftin!

Added this to my gearbox and it really helped to smooth out the shifting. It was easy to add from the tube and it turns the oil a little dark. It helped with false neutrals between gears 3 & 4 on my bike and downshifting is much improved.

Seems to work quite well. I was hearing some gear whine, and after adding this product it seems much quieter. Only complaint is determining how much to add to a quantity of gear oil. Label says the tube contains 50g and is good for up to 2.5 qts of oil. There's really no way to determine how much you've added. I may have overthught this, but I had three different gear cases I wanted to add it to, each with a different capacity. I decided to use our kitchen gram scale to measure the amounts by weight. It worked and I'm happy with the result.

I was first introduced to MOS2 by our bearing supplier to a J&J facility. I was the Technical Adviser and we were having catastrophic bearing failures in3600RPM large motor bearings. I began using Moly grease in my bearings, and liquid Moly made by Dupont in my large gear boxes. I used IRD computer based vibration measurement immediately measured lower bearing and gear box temperature rise. The motor bearings lasted many times longer, and when they failed they were still operational without destroying the motor shaft. I had also been monitoring the Db (noise) level of my gear boxes and the level was significantly reduced. Under heat and pressure the Moly fills the pours in even polished surfaces and is super lubricated. I also found out that Moly was being used in the large, slow moving bearings on observatory telescope rotating tables. This is NOT smoke and mirrors.

I used it in my differential and power steering and it seems like it really helps

Update - 7/4/24:This stuff works!I have a 2020 VW GTI that had a harsh manual transmission, even with new gear oil. I added one tube and it improved shifting a lot. After a month (~ 1K miles), I felt it could get better.So I added a second tube today to the gearbox oil and man, it got smoother immediately, right out of the garage!It really eased shifting into first gear, and the second, that was scratching a bit, is way smoother!Now I can give my short shifter another try. :)————————————————————I bought this as an additive to gear oil when I replaced the manual transmission fluid on my car. Did not help at all, but I found out later that I had used an incorrect type of oil - it was too thick. I can't blame the product, thus, I'm giving it 3 stars.

Worked exactly as I needed in my transfer cases and rear differential.I was having a grinding noise at 200k, the oil was changed at 100k, but I changed the oil and still had noise. I added 1 oz to the transfer case and also added 1 oz to the rear differential and my grinding noise went away completely. I was so amazed with how well this worked. It now feels smooth as butter even at 200k!I personally depend very heavily on reviews that are posted on Amazon, as do many other consumers. I not only read what reviewers say, but look to see what their pictures reveal about a products true quality and description. I aim to not only feature the products I review in many different aspects, analyzing many qualities, I also provide my own opinions on ALL the good AND bad experiences I have with the product I review. I take time to learn and use a product as it was intended before I review it, and I have used this specific product thoroughly.My rating system:5 - Met all my expectations. Was described and pictured perfectly. Exactly what I wanted and needed. Extremely useful product and a great value. Would recommend to family and friends.4 - Very good product. Exactly as described. May have a minor flaw, mentioned in the review, that does not detract from the products perceived value. Would recommend to family and friends.3 - Average product. Not exactly as described, or misleading advertising or product pictures. Possibly substandard build quality, or something else explained in the review. Would mention as an option to family and friends, but not recommend.2 - Wouldn't recommend this product. Poor build quality, not close to being as described. Flimsy and fragile. Difficult to use due to product flaws.1 - Do not purchase whatsoever. Usually only given if product lasts only a few hours/days/etc. I do not leave 1 star reviews without contacting the seller. I will be returning the product.I did NOT receive ANY discounts for this product. I am reviewing it because I do review most of the products that I purchase.