zMAX Transmission Formula 6 oz micro-lubricant for automatic & manual transmissions — reduces carbon and improves shifting

zMAX 51-306 Transmission Formula is a 6 oz micro-lubricant treatment that cleans varnish, lubricates gears and seals, and helps restore smoother shifting in both automatic and manual transmissions (not for CVT).

This concentrated transmission additive is designed to be mixed into existing transmission fluid to reduce friction, cut down on carbon and varnish buildup, and keep seals flexible to limit leaks. It’s a preventive maintenance product intended for periodic use whenever transmission fluid is changed, and it’s formulated to work with a wide range of conventional and synthetic fluids without voiding manufacturer warranties.

How does this formula improve shifting performance?

The zMAX micro-lubricant penetrates metal surfaces to reduce metal-on-metal friction and dissolve varnish that causes rough or delayed gear engagement. As sticking or sluggish valves and worn gear surfaces regain smoother operation, you can expect crisper shifts and reduced slippage in many applications.

• Molecules bond to metal for lasting micro-lubrication
• Breaks down varnish and carbon deposits on clutch packs and valve bodies
• Helps restore quicker engagement and smoother gear changes

Will this keep seals and gaskets from drying out or leaking?

The formula contains conditioners that help maintain seal pliability, which lowers the chance of seepage from hardened or brittle seals. Regular additions when changing fluid can help maintain proper sealing surfaces and reduce slow external leaks.

• Seal conditioners maintain elasticity to reduce seepage
• Compatible with common transmission seal materials
• Use at each fluid change for preventive maintenance

Is zMAX Transmission Formula safe for my transmission and warranty?

zMAX 51-306 is engineered to be compatible with most automatic and manual transmission fluids and is not formulated to void manufacturer warranties. It is explicitly not intended for CVT systems—always check your vehicle manual prior to use.

• Designed for automatic and manual transmissions (excludes CVT)
• No known warranty-voiding ingredients when used as directed
• USA-made, industry-tested micro-lubricant

How and when should I use this additive for best results?

Pour the 6 oz bottle into the transmission fluid during a fluid change or when topping up according to the dosing instructions on the package. For preventive maintenance, add it every time you change fluid; for performance recovery, follow label directions and monitor shifting improvements.

• Add during fluid change or when topping off transmission fluid
• Follow product dosing on the bottle for fluid capacity
• Repeat with each fluid service for ongoing protection

Who is this for: zMAX 51-306 Transmission Formula is intended for vehicle owners, DIY mechanics, and fleet managers who want an affordable preventive treatment to reduce varnish, protect gears and bearings, and preserve flexible seals in automatic and manual transmissions. It’s suitable for cars, trucks, and light-duty vehicles using conventional or synthetic transmission fluids (not CVT), and for anyone seeking smoother shifting without major mechanical intervention.