Motor Oil Additives and Treatments

Proper maintenance will save you lots of money throughout the years. At Autobarn we carry engine flushes to remove dirt and sludge from your motor, oil stop leak to fix that minor leak problem you always had, engine treatment to restore gas mileage and leaves your engine running smoother, and more! We feature brands from Lucas, Lubro-Moly, Zmax, Royal Purple, STP, Gunk, White Shepherd, Rislone, Tufoil, CD-2 and Lubegard.
Tufoil Engine Treatment 8 oz.
Tufoil Engine Treatment 32 oz.
Tufoil Engine Treatment 1 Gallon
Tufoil Engine Treatment For Trucks (50 oz)
Tufoil Engine Treatment 8 oz.
Slipperier than Teflon to make engines start easier, run cleaner, faster, and longer.
Our Price: $13.95
Sale Price: $12.95
You Save: $1.00
Tufoil Engine Treatment 32 oz.
Our Price: $48.95
Sale Price: $43.95, 2/$85.90
You Save: $5.00
Tufoil Engine Treatment 1 Gallon
Our Price: $151.95
Tufoil Engine Treatment For Trucks (50 oz)
Our Price: $61.95
Sale Price: $59.95
You Save: $2.00
Tufoil Engine Treatment For Motorcycles 2 Oz.
4 Cylinder Engine Restorer & Lubricant (11 oz.)
6 Cylinder Engine Restorer & Lubricant (15 oz.)
8 Cylinder Engine Restorer & Lubricant (19 oz.)
Tufoil Engine Treatment For Motorcycles 2 Oz.
Our Price: $8.95
Sale Price: $6.95
You Save: $2.00
4 Cylinder Engine Restorer & Lubricant (11 oz.)
Our Price: $8.99
6 Cylinder Engine Restorer & Lubricant (15 oz.)
Our Price: $10.49
8 Cylinder Engine Restorer & Lubricant (19 oz.)
Our Price: $11.95
SLICK 50 Synthetic Engine Treatment (15 oz)
ATP AT-205 Multi-Purpose Leak Re-Sealer (8 oz)
Liqui-Moly Cera Tec Motor Oil Additive (300 ML)
Lubro-Moly Motor Oil Saver (300 ML)
SLICK 50 Synthetic Engine Treatment (15 oz)
Fights performance robbing friction 18% better than synthetic motor oil alone
Our Price: $19.95
Sale Price: $17.95
You Save: $2.00
ATP AT-205 Multi-Purpose Leak Re-Sealer (8 oz)
Stops leaks in the power steering, transmission, engine, differential, sunroof seals, etc.
Our Price: $13.59
Liqui-Moly Cera Tec Motor Oil Additive (300 ML)
High-tech ceramic wear protection product for all motor oils
Our Price: $29.95
Sale Price: $26.95, 2/$51.50
You Save: $3.00
Lubro-Moly Motor Oil Saver (300 ML)
Our Price: $9.95, 2/$18.90
Lubro-Moly MoS2 Anti-Friction Engine Treatment (300 ML)
Lubro-Moly Pro-Line Engine Flush (500 ML)
Lucas Low Viscosity Oil Stabilizer (12 oz)
Lucas Heavy Duty Oil Stabilizer (1 Quart)
Lubro-Moly MoS2 Anti-Friction Engine Treatment (300 ML)
Our Price: $8.95, 2/$17.10
Lubro-Moly Pro-Line Engine Flush (500 ML)
Our Price: $14.95, 2/$28.50
Lucas Low Viscosity Oil Stabilizer (12 oz)
Reduces anti-wear, friction reduction, dispersancy, and oxidation inhibition, to prolong the useful life of your oil
Our Price: $11.95
Sale Price: $9.95
You Save: $2.00
Lucas Heavy Duty Oil Stabilizer (1 Quart)
Our Price: $13.99
Sale Price: $12.49, 3/$32.85, 6/$62.34, 12/$119.40
You Save: $1.50
Lucas Heavy Duty Oil Stabilizer (1 Gallon)
Lucas Synthetic Heavy Duty Oil Stabilizer (1 Qt.)
Lucas Oil High Mileage oil Stabilizer (1 Qt)
Lucas Engine Oil Stop Leak (32 oz.)
Lucas Heavy Duty Oil Stabilizer (1 Gallon)
Our Price: $29.95, 2/$56.90
Lucas Synthetic Heavy Duty Oil Stabilizer (1 Qt.)
Lucas synthetic oil stabilizer stabilizes oil pressure, eliminates hesistation, rough idle, stalling and friction for more power and MPG
Our Price: $14.99
Sale Price: $13.99
You Save: $1.00
Lucas Oil High Mileage oil Stabilizer (1 Qt)
Effective in eliminating leaks, overheating and noise
Our Price: $14.95
Lucas Engine Oil Stop Leak (32 oz.)
Our Price: $10.95, 2/$21.50
Lucas Engine Oil Stop Leak (Gallon)
Lucas Motorcycle Oil Stabilizer (12 Oz)
Royal Purple Engine Break-In Oil (1 Qt.)
Lucas Engine Break-In Oil Additive (16 oz.)
Lucas Engine Oil Stop Leak (Gallon)
Our Price: $31.95, 2/$60.70
Lucas Motorcycle Oil Stabilizer (12 Oz)
Our Price: $6.49, 2/$12.30
Royal Purple Engine Break-In Oil (1 Qt.)
Our Price: $11.95
Lucas Engine Break-In Oil Additive (16 oz.)
Our Price: $13.95, 2/$26.50
STP Smoke Treatment (14.5 oz.)
Blue Devil Rear Main Sealer (8 oz.)
Blue Devil Oil Stop Leak & Conditioner (8 oz)
Motor Medic Bearin' Seal Engine Oil Stop Leak (12 oz.)
STP Smoke Treatment (14.5 oz.)
Our Price: $5.75
Blue Devil Rear Main Sealer (8 oz.)
Our Price: $13.95
Blue Devil Oil Stop Leak & Conditioner (8 oz)
Our Price: $34.95
Sale Price: $19.95
You Save: $15.00
Motor Medic Bearin' Seal Engine Oil Stop Leak (12 oz.)
Our Price: $3.99
Motor Medic Valve Medic Oil Detergent (12 oz.)
Motor Medic 5-Minute Motor Flush (32 oz.)
Rislone High Mileage Engine Treatment (16.9 oz.)
Rislone Ring Seal (16 oz.)
Motor Medic Valve Medic Oil Detergent (12 oz.)
Our Price: $3.99
Motor Medic 5-Minute Motor Flush (32 oz.)
Our Price: $7.99
Rislone High Mileage Engine Treatment (16.9 oz.)
Our Price: $6.49, 12/$65.88
Rislone Ring Seal (16 oz.)
Our Price: $4.95
STP Oil Treatment (15 oz.)
Marvel Mystery Oil (16 oz.)
Marvel Mystery Oil (32 oz.)
LUBEGARD Bio/Tech Engine Protectant (15 oz.)
STP Oil Treatment (15 oz.)
Our Price: $4.99, 3/$13.35, 6/$26.70, 12/$47.88
Marvel Mystery Oil (16 oz.)
Retards the formation of power dissipating motor deposits, such as gums, varnish, and sludge
Our Price: $5.99
Sale Price: $4.99, 6/$28.14
You Save: $1.00
Marvel Mystery Oil (32 oz.)
Our Price: $7.49, 2/$13.30, 6/$38.94
LUBEGARD Bio/Tech Engine Protectant (15 oz.)
Will extend your engine's oil life, resulting in extended oil and filter change intervals
Our Price: $12.97
Sale Price: $6.97
You Save: $6.00
LUBEGARD Engine Flush (15 oz.)
LUBEGARD Engine Flush (15 oz.)
Our Price: $8.99

  • "Seems like a good website, easy to use and fair prices." (2/27/19)

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  • "Good price and got what i want from the web" (2/26/19)

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  • "Good prices, easy online purchase procedure." (2/20/19)

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  • "From product selection to competitive product pricing to order execution (start to finish) to order fulfillment... communications as and if required...couldn't ask for a better 'partner' to accomplish my projects using Auto Barn's items." (2/19/19)

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