Lubegard Automatic Transmission Fluid Protectant 32 oz — Lowers ATF Temp, Restores Seals

Lubegard 50902 Automatic Transmission Fluid Protectant is an additive that lowers operating temperature, stabilizes ATF, and helps restore seals to improve transmission performance.

This 32-ounce Lubegard formula is engineered for automatic transmissions and manual gearboxes that call for ATF (excluding Ford Type F and CVT systems). It works with both synthetic and mineral-based DEXRON, MERCON, and OEM fluids and is commonly used in heavy-duty applications such as Allison transmissions. The concentrate relies on Lubegard’s LXE (Liquid Wax Ester) technology combined with premium base oils and additives to raise the thermal and oxidative stability of transmission fluid, helping it resist thinning, oxidation and deposit formation during high-heat operation.

How does Lubegard 50902 help manage transmission heat?

The protectant improves the fluid’s ability to transfer and withstand heat so the transmission runs at lower temperatures under load. By increasing thermal stability, the ATF maintains viscosity and resists breakdown when operating conditions become severe.

• Lowers elevated operating temperatures by up to 40°F in many situations
• Improves heat transfer to reduce hotspots in the torque converter and gearbox
• Helps prevent thermal thinning that leads to poor lubrication

Will this product work with my vehicle’s ATF?

Lubegard 50902 is compatible with most automatic transmission fluids including DEXRON, MERCON and many OEM ATFs, both mineral and synthetic. It is not formulated for Ford Type F ATF or continuously variable transmissions (CVTs), so consult your vehicle guidelines before use.

• Safe for use in front-wheel-drive and heavy-duty automatic transmissions
• Not recommended for Ford Type F or CVT systems
• Adds to the full transmission capacity, including the torque converter

How does it affect clutch feel and seal condition?

The protectant is designed to be friction-compatible so it won’t cause clutch slippage or upset. It also conditions seals: protecting new rubber and rejuvenating older seals to reduce leaks without negative interactions with clutch friction.

• Prevents clutch chatter and torque converter shudder
• Softens harsh shift events for smoother, quicker shifts
• Restores and protects seals to help stop or reduce leaks

How should I add Lubegard to my transmission?

Use the recommended dosing to achieve the intended benefits: introduce the additive with the engine idling and the vehicle in park. Do not exceed the proper fill level—overfilling can cause problems in the transmission system.

• Add 1 oz (29.6 mL) of Lubegard per quart (liter) of total transmission capacity
• Include the torque converter volume when calculating total capacity
• Top up carefully; always verify levels after addition and do not overfill

Who is this for? Lubegard 50902 is aimed at vehicle owners, fleet managers and technicians seeking to reduce transmission operating temperatures, extend fluid life, eliminate foaming and oxidation, and improve shifting character. It’s particularly useful for front-wheel-drive vehicles that run hotter and for heavy-duty automatic transmissions where thermal stability and seal condition are a concern. Always check your vehicle manufacturer’s specifications before use and avoid Ford Type F and CVT applications.