AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube (MTG) is a premium blend of the finest synthetic base oils and advanced, high-performance additives. It is formulated specifically for maximum protection in the most demanding manual transmission and transaxle applications where an extreme pressure GL-4 gear lube is specified, including those where high horsepower/high torque engines and towing or heavy loads increase transmission stress.
Package sizes include:
1-Quart Bottle
1-Quart Bottles (case of 12)
5-Gallon Pail
55-Gallon Drum
Recommended for synchronized manual transmissions and transaxles that require 75W-85, 75W-90 or 80W-90 viscosities and any of the following performance specifications: API GL-4 and MT-1, ZF TE-ML 02B, 16A, 17A and 19A, Chrysler MS-9070, MAN 341 ML. Recommended for use in NV 4500 transmissions, and replaces GM part #12346190 and Chrysler part #4874459.
Meets GL-4 performance specifications required by some models of Acura, Hyundai, Infiniti, Kia, Land Rover, Lexus, Mazda, Mitsubishi, Nissan, Subaru, Suzuki, Toyota, Volkswagen, Hino Mitsubishi-Fuso, and Zetor. Ideal for muscle car transmissions such as Muncie, Borg Warner, Saginaw, Ford Toploader, Dearborn and New Process. Also recommended for Gear Vendors Gear Splitters.
AMSOIL Synthetic Manual Transmission and Transaxle Gear Lube (MTG) is a premium blend of the finest synthetic base oils and advanced, high-performance additives. It is formulated specifically for maximum protection in the most demanding manual transmission and transaxle applications where an extreme pressure GL-4 gear lube is specified, including those where high horsepower/high torque engines and towing or heavy loads increase transmission stress.
AMSOIL MTG prevents the thinning effects of mechanical shear. It maintains its viscosity and superior film strength for consistent, long-lasting wear protection. MTG excels in hot and cold temperature extremes that exceed the limits of conventional mineral oils. It protects against rust, keeps seals soft for long life, and is compatible with brass synchros for smooth synchromesh shift quality.
MTG is a thermally stable, extreme pressure formulation that resists heat, oxidation, acid build-up and varnish. It is the ideal gear lube for high temperature applications, including the New Venture NV-4500 transmission, which retains heat due to its cast iron housing and is often subjected to heavy loads and high torque from turbo-diesel engines.
AMSOIL MTG is the replacement fluid for GM part #12346190 and Chrysler part #4874459 (Chrysler specification #MS-9070).
The extreme pressure design of MTG reduces friction, heat and wear. It withstands the high horsepower and quick shifts common to muscle cars equipped with large displacement engines.
The advanced synthetic formulation provides ultimate protection for gears and bearings in front wheel drive transaxles.
MTG is a versatile transmission and transaxle lubricant. It reduces inventory needs, is readily available and is cost effective compared to vehicle OEM-branded products.
Performance Features
• Reduces friction, heat and wear
• Superior high temperature stability
• Resists heat, oxidation, acid build-up and varnish
• Lasts two times longer than conventional petroleum oils
• Improves cold weather shifting
Under normal operating conditions AMSOIL MTG will last two times longer than conventional petroleum GL-4 gear oils. Where the original equipment manufacturer (OEM) recommends synthetic oils, follow the OEM drain interval (such as NV 4500).
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).
Click here to view the MSDS Data Sheet for AMSOIL MTG.
Keep out of the reach of children. Don't pollute. Return used oil to collection centers.
| TYPICAL TECHNICAL PROPERTIES Revised as of 1/06 | |
| Synthetic Manual Transmission and Transaxle Gear Lube 75W-90 API GL-4 (MTG) | |
| Kinematic Viscosity @ 100°C, cSt (ASTM D-445) | 14.7 |
| Kinematic Viscosity @ 40°C, cst (ASTM D-445) | 84.5 |
| Viscosity Index (ASTM D-2270) | 177 |
| Flash Point, °C (°F) (ASTM D-92) 150°C Min. | 210 (410) |
| Pour Point, °C (°F) (ASTM D-97) | -44 (-47) |
| 4-Ball Wear 75°C, 1200 rpm, 40kg, 1 hr. | 0.38mm |
| Brookfield Viscosity @ -40°C | 43,595 |
| Foam Stability (ASTM D-892) (20/50/20) | 0/0/0 |
| Copper Corrosion (3 hr, 121°C) (ASTM D-130) | 1B |
Differential & Transfercase can get destroyed if neglected. This tip can help avoid expensive repairs.
Product Name: Manual Transmission and Transaxle Gear Lube (MTG)
Current Rating: 4.8out of 5 stars
Votes & Reviews: 43 vote(s) and 37 user reviews.
Reviewed by C 150: 
Expensive, yes, but the best money can buy.
Reviewed by Jonathan:
I have used this in my transaxles for years, smooth shifting with protection good enough for track duty. Recently added a limited slip diff to my transaxle and it performs beautifully with the amsoil gear lube. I will not run anything else.
Reviewed by PeacemakerJack:
The NV4500 is a unique beast. It is a five speed tranny build by New Venture Gear in conjunction with Castrol to meet the ever growing demand for a stout manual overdrive tranny to back up the stronger diesel motors found in modern pickup trucks. A new gear lube was formulated for this specific transmission. I had owned my Chevy for awhile with this tranny in it when the clutch began to fail. After an overhaul, the tranny shop installed conventional manual gear lube. Within three weeks, I couldn't hardly shift the truck into first or reverse and it was even getting hard to get it into second. I did my own research and found out about the special fluid. I immediately checked to see if Amsoil handled a fluid formulated like the Castrol Syntorque designed for the NV4500 and was overjoyed to see that they did. After changing the fluid, I noticed an immediate difference, a great improvement in shift quality throughout the gear range and rpm powerband. Once again Amsoil delivers a great product suited for a specific need. I would highly recommend this product to anyone owning a vehicle equipped with the NV4500.
Well done!
Reviewed by jcs757:
This is simply fantastic gear oil for the older spec manual transmissions that require a GL4 spec oil!
Reviewed by Andy:
I bought an '09 G37 memorial day weekend 109,000 miles. Changed oils to AMS. in storage for winter. Was told great things about AMS. I will say more next year when I experience the greatness of AMS!
Reviewed by Rockcrusher:
I used this product in my 1969 427 Camaro. I've have this car for over 20 years and have used the GM trans gear lube and multiple other brands over the years. Nothing have worked better or have even come close. There was a noticeable difference right away. The shifts seems so much smoother and it actually felt like everything was tighter and a lot less slop. I would highly recommend this product. I even used the gear lube in the squeezable pouches.....it made it so much easier and also worked great.
Great Idea!! Great Products!!
Reviewed by G'd up from the feet up:
Great lube that made a tactile difference when shifting
Reviewed by 2ndgencummins:
Amsoil is the best out there. Serviced my nv4500 and the 250k beast is still shifting gears like new.
Reviewed by Jamie Smith:
Changed out transfer case and transmission out of factory oil at 75,000 miles. Now it is as smooth as the day I drove it off the lot. Great stuff. Would highly recommend. Bought more to put on the shelf for the next change. I won't wait as long to change out next time.
Reviewed by RG:
First time using this product and it is the best product i have used to date. Please note that if you use a pump to install that the bottle opening is bigger so have the appropriate sized pump for that. I onlyhad the normal size at the time so i have to improvise.
Reviewed by Moe:
Used Amsoil many years ago
Reviewed by JimP:
Made the transmission quieter (Munchie M-21). Not sure how the trans synthetic, but it does seem to shift smoother. Next change I will likely got to a heavier weight.
Reviewed by Brian:
Needed to replace clutch in my 78 FJ40, this was perfect for Transmission and transfer case, shifts more smooth than ever
Reviewed by 1blkc5:
No difference in shifting but I use amsoil products in everything I own .
Reviewed by Josh:
Put 7 quarts in my cummins g56 transmission after reading several good reviews of this fluid and i could not been happier only issue is i should have done it sooner. The truck is quieter and no issues with shifting at all. Dodges atf4 is not what mercedes says is the correct fluid for the transmission as this is one of the easily obtained fluid for consumers in north america to get. I will be swapping this into the axles when the time come for their service as well.
Reviewed by J-byrd:
Used this tranny oil in 2 manual transmission Toyota 4runner.
Quieter tranny and perfectly smooth shifting.
The biggest difference was 1st gear engagement is now super easy.
Reviewed by greg:
Used in Chevy 5 Speed Trans ( NV4500)
Reviewed by cooldork:
Amsoil has always kept all my equipment running like new and showing no signs of wear. Hot or cold weather, it never matters.
Reviewed by Chris:
I've had good luck in the past with this product, but after putting it in my 296k mile trans it is harder to shift and makes more noise. I will have to switch to a synchromesh or try another product.
Reviewed by Jack boosted tacoma:
Works as described and I feel good about having it in my truck. No other fluid I'd rather run off-road
Reviewed by Tundra08:
Put this in a 07 Pontiac vibe (as recommend on amsoil website), it worked great for about 4000 km but then ran into issues with shifting and gears grinding, switched it out to the severe gear oil and never looked back, way better performance now. Now I am sure this product would work great in other manual transmissions.
Reviewed by Kev:
My p/u car tractors skidloader baler rear tine tiller anything that needs gear lube
Reviewed by toyboy:
excellent product but it is on the pricey side.
Reviewed by Nightw50:
I used this product in my 95 Geo Tracker, it shifts so smooth I can shift without using the clutch. Also the counter shaft bearings quite whining.
Reviewed by Rob:
Installed this in my wife's Pontiac Solstice as it was time to change out the factory fluid
Reviewed by Jedi:
Bought this to replace the fluid in my 95 Jetta. I haven't changed the gear fluid in a very long time and it has over 200k miles.;. My friend suggested I do it and go with this stuff. Job was real easy to do and everything seems to be running great so far!
Reviewed by Al Bundy:
I just finished a clutch job on a shop truck (97 Dodge 2500) that has been through more than one over the last few years due to a number of different drivers. Owner said this time was different and the truck was shifting like the day he drove it off the lot, the only thing I did that I hadn't done before this time was use Amsoil. That simple.
Reviewed by Kenneth:
I am using this in my race car
Reviewed by Jason:
I know to always use Amsoil products. Don't know why ATF is recommended for my 2000 Mustang GT manual transmission. I want to put this in it instead.
Reviewed by William:
Topped off after a drive axle replacement. Seems to work great. Shifter and pedal are happier!
Reviewed by Shane:
Currently using it in my 94 ram with the nv4500 and in my 04 VW TDI. It meets the specs for both vehicles manual transmissions, smooth shifting all around. Recommended to my friends and family.
Reviewed by Jerry:
Freed up my VW transmission
Reviewed by Josh:
Solved a common 1-2 shift grind in my 2012 chevy cruze. A lot of people with the 6 speed manual complain about grinding shifting between 1st and 2nd no matter how they shift. This product took care of that problem. No more grinding in any gear
Reviewed by Loren:
Best stuff going!!
Reviewed by Josh:
Solved a common 1-2 shift grind in my 2012 chevy cruze. A lot of people with the 6 speed manual complain about grinding shifting between 1st and 2nd no matter how they shift. This product took care of that problem. No more grinding in any gear
Reviewed by donnie:
hard too find gl4 in any good quality at all ..answer to my needs for a synthetic diff lube that will not attack the yellow metals in my components ..well done
Great product!!
I have used this product sense 2008, when doing fluid change this past year in a 3500 Dodge 6-speed with lots of hauling miles it still looked like the day I put it in. I believe in Amsoil products, I wouldn't trust any other brands to keep things running longer an being able to perform 100% without worrying about mechanical breakdowns. Original transmission has over 250,000 miles now with no issues. Don't hesitate to buy a great product!