AMSOIL Synthetic Manual Transmission Fluid | Synchromesh & Gear Lube

AMSOIL Synthetic Manual Transmission Fluids

AMSOIL synthetic manual transmission fluids are engineered for maximum protection of gears, bearings, and synchromesh components in manual transmissions and transaxles. Unlike conventional fluids that thin under mechanical shear, AMSOIL synthetic formulations maintain stable viscosity and superior film strength throughout their service life.

Whether you drive a classic truck with a Tremec T56 or a daily driver with a Honda transaxle, AMSOIL has a purpose-built manual transmission fluid that outperforms conventional and OEM-branded products.

Choose Your Formulation

Manual Synchromesh Transmission Fluid

AMSOIL 100% Synthetic Manual Synchromesh Transmission Fluid is designed for synchromesh transmissions where non-extreme-pressure fluids are required. It provides excellent protection from -40°F (-40°C) to 300°F (149°C) and delivers:

• Stable viscosity that resists the thinning effects of mechanical shear
• Superior film strength and excellent anti-wear performance
• Brass component protection for smooth synchromesh shift quality
• Improved cold-weather shifting with a pour point of -48°C (-54°F)
• Extended service life — recommended for 50,000 to 150,000 miles

It replaces multiple OEM-branded products including GM 9985648, Chrysler MS-9224, Honda Genuine MTF, and Land Rover MTF-94 — reducing inventory needs for service centers while providing superior synthetic protection.

Order AMSOIL Synthetic Manual Transmission Fluid

Get superior gear and synchro protection for your manual transmission with AMSOIL synthetic fluid.

Shop Manual Transmission Fluid at AMSOIL.com Independent AMSOIL Dealer #1858536

For wholesale pricing, contact National Synthetics about the Preferred Customer program and save up to 25% on all AMSOIL products.

Frequently Asked Questions

Warranty Secure™

All AMSOIL synthetic manual transmission fluids are high-performance replacements for vehicle manufacturer-branded products and are backed by the AMSOIL Limited Warranty. They are also Warranty Secure™, keeping your factory warranty intact.

Using AMSOIL synthetic lubricants does not void your vehicle manufacturer’s warranty. For complete information visit AMSOIL.com/guarantee.

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