Transmission Additives

Transmission AdditivesAt AutoBarn we carry a large variety of transmission additives ranging from, transmission stop leaks, transmission conditioners, transmission flushes, transmission sealers, transmission treatments, friction modifier, transmission protectant, assembly lubricant, transmission supplements, and shudder fixes. Each providing different components to improve your transmission function and driveability by brands such as Lubro-Moly, Lucas, White Shepherd, and Lubegard.
zMax Micro-Lubricant Transmission Formula (6 oz)
ZMax Multi-Purpose Engine, Tranmission & Fuel System Formula (32 oz)
ATP AT-205 Multi-Purpose Leak Re-Sealer (8 oz)
Sea Foam Transmission & Power Steering Cleaner Fluid (16 oz.)
Soaks into metal to help prevent leaks, reduce varnish, and improve shifting
Our Price: $12.95
Works on your engine, fuel system or transmission
Our Price: $34.95
Stops leaks in the power steering, transmission, engine, differential, sunroof seals, etc.
Our Price: $12.95, 2/$23.90
Our Price: $8.99
Lubro-Moly MoS2 Anti-Friction For Gears (50g)
Lucas Automatic Transmission Fluid Conditioner (20 oz.)
Blue Devil Transmission Sealer (16 oz.)
Lubegard Transmission Flush (10 oz)
Our Price: $10.95
Sale Price: $9.95, 2/$18.90
You Save: $1.00
Our Price: $12.95
Sale Price: $9.95
You Save: $3.00
Our Price: $10.49
Safely removes varnish deposits and prepares your transmission for new fluid. Safe for all transmissions
Our Price: $7.99
Gunk Transeal Automatic Transmission Sealer (12 oz.)
Gunk Trans Medic Automatic Transmission Treatment (12 oz.)
Lucas Transmission Fix with ATF Conditioner (24 oz.)
Tow Kool Super Concentrated Automatic Transmission Formula (16 oz.)
Our Price: $2.69
Our Price: $4.49
Our Price: $12.49, 6/$68.10, 12/$136.20
Our Price: $11.95
Lubegard Synthetic Automatic Transmission Protectant  (10 oz.)
Lubegard High Friction Modified ATF Supplement (10 oz.)
Lubegard Automatic Transmission Supplement for Ford Applications (10 oz.)
LUBEGARD Platinum High Performance ATF Protectant (10 oz.)
Prevents overheating & reduces elevated operating temperature., and reduces ATF foaming and oxidation
Our Price: $9.99
Converts ATF into highly friction modified ATF, to save you time, space, and money
Our Price: $12.95
Corrects additive depletion problems and converts Dex/Merc ATF to perform like Mercon V ATF
Our Price: $11.95
Doubles the life of the ATF when added to Dex III and performs 7% better than Dex VI
Our Price: $14.95
Lubegard Kooler Kleen Transmission Line Flush Cleaner (13 oz)
Lubegard Assemblee Goo Firm Tack Assembly Lubricant (16 oz.)
Lubegard Instant Shudder Fixx (2 oz.)
LUBEGARD Gear Fluid Supplement (8 oz.)
Removes grease, dirt, sludge, grime and metal shavings
Our Price: $8.99
Provides lubrication and helps facilitate the assembly process
Our Price: $9.99
Instantly eliminates torque converter lock-up shudder
Our Price: $8.99
Our Price: $8.99
Lubegard Universal Limited Slip Supplement (4 oz.)
Superior friction modifier works in all makes and models including Ford, Chrysler, and GM
Our Price: $8.99
  • "Auto was the only vendor who stocked all the products I needed at the best price and fastest free shipping." (5/23/18)

  • "Very easy to find what I wanted" (5/23/18)

  • "Very competitive pricing and free shipping is a great combination." (5/22/18)

  • "I always find that your products are of good quality." (5/12/18)

Read All Testimonials