AMSOIL 100% Synthetic Manual Synchromesh Transmission Fluid
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Maximum Protection for Synchromesh Transmissions
AMSOIL 100% Synthetic Manual Synchromesh Transmission Fluid is a premium-quality synthetic lubricant designed to surpass the most demanding requirements of manual transmissions and transaxles where non-extreme-pressure fluids are used. It protects gears and bearings in extreme temperatures, surpassing conventional oil performance with excellent protection from -40°F (-40°C) to 300°F (149°C).
Unlike conventional oil counterparts, it prevents the thinning effects of mechanical shear for stable viscosity, superior film strength and excellent anti-wear performance. It protects against corrosion, conditions seals for long life and protects brass components for smooth synchromesh shift quality.
Key Benefits
- Protects gears and bearings from -40°F to 300°F
- Prevents thinning from mechanical shear for stable viscosity
- Superior film strength and excellent anti-wear performance
- Protects brass synchromesh components for smooth shift quality
- Resists heat, oxidation, acid buildup and varnish deposits
- Improves cold-weather shifting with pour point of -48°C (-54°F)
- Recommended for 50,000-mile to 150,000-mile service intervals
- Conditions seals for long life and corrosion protection
Synthetic Advantages Over Conventional Fluids
AMSOIL 100% Synthetic Manual Synchromesh Transmission Fluid maximizes fuel economy while resisting the effects of heat, oxidation and varnish deposits. Its synthetic formulation delivers stable viscosity that conventional fluids cannot match, especially under the mechanical shear stress inside a manual gearbox.
With a viscosity index of 196 and a pour point of -48°C (-54°F), it flows quickly in extreme cold for improved cold-weather shifting while maintaining protective film strength at elevated temperatures.
Technical Specifications
| Property | Value |
|---|---|
| Kinematic Viscosity @ 100°C, cSt | 10.1 |
| Kinematic Viscosity @ 40°C, cSt | 49.4 |
| Viscosity Index | 196 |
| Flash Point | 218°C (424°F) |
| Pour Point | -48°C (-54°F) |
| Four-Ball Wear Test (ASTM D4172 @ 40 kg, 75°C, 1200 rpm, 1hr), Scar, mm | 0.40 |
| Brookfield Viscosity @ -40°C, cP | 32,075 |
| Foam Stability (20/50/20) Max. | 0/0, 0/0, 0/0 |
| Copper Corrosion 3hr @ 121°C | 1A |
Industry Certifications & OEM Approvals
GM
- 9985648, 9986105, 9985535
Chrysler
- MS-9224, MS-9417
Honda
- Genuine MTF fluid for transaxles
Land Rover/MG/Mini Cooper
- MTF-94
Texaco
- MTX fluid
Broad Manual Transmission Coverage
Use in automotive and light-truck applications that require synchromesh transmission fluid. Applications include manual transmissions and transaxles such as New Venture NV T350, NV 1500, NV 2550, NV 3500, NV 3550, NV 5600, and Tremec T4, T5, T18, T56, T176, TKO500, TKO600, TR 3450 and TR 3550.
Not for use in engines, hypoid rear axles, limited-slip or wet-clutch applications. It is a high-quality, lower cost replacement for multiple vehicle-manufacturer branded products.
Pros and Cons
Pros
- Protects gears and bearings from -40°F to 300°F
- Prevents thinning from mechanical shear for stable viscosity
- Superior film strength and excellent anti-wear performance
- Protects brass synchromesh components for smooth shift quality
- Resists heat, oxidation, acid buildup and varnish deposits
- Improves cold-weather shifting with pour point of -48°C (-54°F)
- Recommended for 50,000-mile to 150,000-mile service intervals
- Conditions seals for long life and corrosion protection
Cons
- Not yet available in the Easy-Pack format that many other AMSOIL fluids come in.
- Premium Investment: Higher initial cost compared to conventional or "shelf-brand" synthetic oils.
- Limited Local Retail: Primarily available through authorized dealers and specialized synthetic outlets. National Synthetics is a local stocking dealer. Call 1-678-944-8816 to confirm in-stock items for same-day local pickup.
Order Through Your Independent AMSOIL Dealer
Upgrade your manual transmission protection with AMSOIL 100% Synthetic Manual Synchromesh Transmission Fluid. As your Independent AMSOIL Dealer, we provide expert guidance and competitive pricing on all AMSOIL products.
Independent AMSOIL Dealer #1858536
Frequently Asked Questions
It is designed for manual transmissions and transaxles requiring synchromesh transmission fluid, including New Venture NV T350, NV 1500, NV 2550, NV 3500, NV 3550, NV 5600 and Tremec T4, T5, T18, T56, T176, TKO500, TKO600, TR 3450 and TR 3550. It meets GM 9985648, GM 9986105, GM 9985535, Chrysler MS-9224, Chrysler MS-9417, Honda MTF, and Land Rover/MG/Mini Cooper MTF-94 specifications.
No. AMSOIL Manual Synchromesh Transmission Fluid is a non-extreme-pressure fluid designed specifically for synchromesh manual transmissions and transaxles. It is not for use in engines, hypoid rear axles, limited-slip differentials, or wet-clutch applications. For those applications, use AMSOIL SEVERE GEAR or the appropriate AMSOIL gear lube.
AMSOIL recommends 50,000-mile service intervals or longer, up to 150,000 miles as indicated in your owner's manual. Its synthetic formulation resists breakdown far longer than conventional fluids, allowing extended drain intervals while maintaining full protection.
Synthetic manual transmission fluid resists the thinning effects of mechanical shear that degrades conventional fluids, maintaining stable viscosity and superior film strength throughout its service life. It also provides significantly better cold-weather shifting performance, with a pour point of -48°C (-54°F) compared to conventional fluids that thicken and cause hard shifts in cold weather.
Customer Reviews
See all 146 reviews5 star rating Best Of The Best
All AmsOil products are Best That You Can Get .This manual Synchromesh Transmission Fluid Its The Best Thing You Can get.
Smooth Shifting
This is second time I replaced the manual transmission fluid in my 2018 Honda Civic. The first was actually at the dealership with what I assume is the factory oil. The transmission wasn't shifting as smooth as when I bought the car but I kept driving it until it needed to be replaced again. This time, I replaced it myself with AMSOIL 5W-30 Manual Synchromesh Transmission Fluid and got back the smoothness I was missing when it was new.
Good product
Slight improvement on reverse shifting with my jeep JK, gave it 4 stars because I wish Amsoil would package it in their easy pack bag.
Independent AMSOIL Dealer #1858536. Product information sourced from AMSOIL. Visit AMSOIL.com for the most current product details and availability.