ULTRA 1PLUS ATF Dexron III/Mercon Automatic Transmission Fluid 1 Gallon — Smooth Shifts & Oxidation Protection

ULTRA 1PLUS ATF Dexron III/Mercon is a premium one-gallon automatic transmission fluid formulated to meet GM Dexron III and Ford Mercon specifications for smoother shifts and longer transmission life.

Whether you maintain a daily driver, a work truck, or a weekend classic, using the correct automatic transmission fluid helps the gearbox operate reliably. This ULTRA 1PLUS ATF blends friction modifiers, detergents, and anti-oxidants designed for vehicles that specify Dexron III or Mercon fluids. It offers stable performance across a wide temperature range and helps protect transmission components from oxidation, sludge, and varnish buildup.

Will this ATF work with my older automatic transmission?

Yes — this formula is designed for vehicles that call for Dexron III or Mercon performance levels, which covers many pre-2006 cars, trucks, and SUVs. Always consult your owner’s manual for the exact specification required.

• Meets or exceeds Dexron III and Mercon specifications.
• Suitable for many pre-2006 transmissions and power steering systems.
• Compatible with common transmission materials and seals in older models.

How does ULTRA 1PLUS ATF improve shifting and longevity?

The fluid is formulated for consistent friction characteristics to promote smooth, predictable gear changes under load and temperature swings. Additives reduce wear and help keep valve bodies and clutch packs cleaner, which can support longer service intervals when used correctly.

• Friction-stable formulation for smooth gear engagement.
• Anti-oxidants and detergents help prevent sludge and varnish.
• Wear inhibitors protect gears, clutches, and bearings.

Can I use this ATF for power steering or other components?

Many vehicles that call for Dexron III or Mercon allow the same fluid in power steering systems, but check the manufacturer’s recommendations first. Using ULTRA 1PLUS ATF in approved applications simplifies service and reduces the need to stock multiple fluids.

• Commonly acceptable for compatible power steering systems.
• Check vehicle manual for system-specific approvals and volumes.
• Same fluid can be used for multiple service points when permitted.

How does this fluid perform in extreme temperatures?

ULTRA 1PLUS ATF is engineered to maintain viscosity and protective properties in both hot and cold climates, helping ensure dependable start-up lubrication and stable hydraulic operation under heat. That means reliable shifting and component protection year-round.

• Formulation resists viscosity breakdown in high heat.
• Retains flowability for cold-weather pumpability and shifts.
• Helps prevent oxidation-related deposits over time.

Who is this for: Drivers and technicians who maintain pre-2006 vehicles or any model specifying Dexron III or Mercon fluids will find ULTRA 1PLUS ATF a practical choice. It suits DIYers changing transmission or power steering fluid, fleet managers seeking consistent product performance, and restoration shops working on older cars. Always verify your vehicle’s required fluid specification and service intervals before replacing or topping up transmission fluids.