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.
Slipperier than Teflon to make engines start easier, run cleaner, faster, and longer.
Our Price: $12.95
Our Price: $48.95
Sale Price: $43.95, 2/$81.90
You Save: $5.00
Our Price: $144.95
Our Price: $60.95
Sale Price: $56.95
You Save: $4.00
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.)
Our Price: $8.95
Sale Price: $6.95
You Save: $2.00
Our Price: $8.49
Our Price: $10.49
Our Price: $11.95
SLICK 50 Synthetic Engine Treatment (15 oz)
ATP AT-205 Leak Re-Sealer (8 oz)
Lucas Motorcycle Oil Stabilizer (12 Oz)
Liqui-Moly Cera Tec Motor Oil Additive (300 ML)
Fights performance robbing friction 18% better than synthetic motor oil alone
Our Price: $19.95
Stops leaks in the power steering, transmission, engine, differential, sunroof seals, etc.
Our Price: $11.95
Our Price: $6.49
High-tech ceramic wear protection product for all motor oils
Our Price: $24.95
Sale Price: $23.95
You Save: $1.00
Lubro-Moly Motor Oil Saver (300 ML)
Lubro-Moly MoS2 Anti-Friction Engine Treatment (300 ML)
Lubro-Moly Motor Protect Synthetic Oil Additive (16.9 oz)
Lubro-Moly Pro-Line Engine Flush (500 ML)
Our Price: $8.99
Our Price: $8.95
Our Price: $26.95
Sale Price: $24.95
You Save: $2.00
Our Price: $14.95
ZMax Engine Treatment (12 oz.)
Lucas Heavy Duty Oil Stabilizer (1 Quart)
Lucas Heavy Duty Oil Stabilizer (1 Gallon)
Lucas Engine Oil Stop Leak (32 oz.)
Our Price: $22.95
Our Price: $11.95
Sale Price: $10.95, 3/$29.85
You Save: $1.00
Our Price: $29.95
Our Price: $8.99
Lucas Engine Oil Stop Leak (Gallon)
Royal Purple Engine Break-In Oil (1 Qt.)
Lucas Engine Break-In Oil Additive (16 oz.)
STP Smoke Treatment (14.5 oz.)
Our Price: $23.95
Our Price: $9.95
Our Price: $13.95
Our Price: $4.95
Blue Devil Rear Main Sealer (8 oz.)
Blue Devil Oil Stop Leak & Conditioner (8 oz)
Gunk Bearin' Seal Engine Sealer (12 oz.)
Gunk Valve Medic Valve Treatment (12 oz.)
Our Price: $13.95
Our Price: $34.95
Sale Price: $19.95
You Save: $15.00
Our Price: $3.49
Our Price: $3.49
Gunk 5-Minute Motor Flush (32 oz.)
Rislone Engine Treatment (16.9 oz.)
Rislone Ring Seal (15 oz.)
STP Oil Treatment (15 oz.)
Our Price: $5.99
Our Price: $6.49, 12/$65.88
Our Price: $4.95
Our Price: $4.69, 12/$47.88
CD-2 Heavy Duty Engine Oil Stop Leak (15 oz.)
CD-2 Oil Detergent (15 oz.)
Marvel Mystery Oil (16 oz.)
Marvel Mystery Oil (32 oz.)
Our Price: $3.99, 6/$20.94
Our Price: $3.99, 6/$20.94
Our Price: $4.29
Sale Price: $3.99, 6/$22.14
You Save: $0.30
Our Price: $5.99, 6/$32.94
LUBEGARD Bio/Tech Engine Protectant (15 oz.)
LUBEGARD Engine Flush (15 oz.)
Our Price: $12.95
Our Price: $8.99
  • "Easy to find right product. Fast check out. Reasonable shipping rates with very good prices. Will definitely use again." (8/3/14)

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  • "Found just what I was looking for - had been on many other sites prior to this and had no results - I am pleased with Auto Barn and will use it in the future." (7/27/14)

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  • "They had just what I was looking for." (7/21/14)

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  • "The pricing is reasonably lower than other websites." (7/21/14)

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