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.
Blue Devil Stop Smoke and Engine Repair (16 oz)
Blue Devil Pro Universal Leak Repair (12 oz)
Tufoil Engine Treatment 8 oz.
Tufoil Engine Treatment 32 oz.
Stops exhaust smoke as well as reduce oil loss issues
Our Price: $13.95, 6/$79.50
Seals leaks in multiple systems including: power steering, engine oil, and differentials
Our Price: $19.95, 6/$115.50
13 Reviews
Slipperier than Teflon to make engines start easier, run cleaner, faster, and longer.
Our Price: $13.95
Sale Price: $12.95, 2/$24.90
You Save: $1.00
10 Reviews
Our Price: $48.95
Sale Price: $44.95, 2/$87.90
You Save: $4.00
Tufoil Engine Treatment (48 oz.)
Tufoil Engine Treatment 1 Gallon
Tufoil Engine Treatment For Trucks (50 oz)
Tufoil Engine Treatment For Motorcycles (2 oz)
Faster cranking speed under all weather conditions
Our Price: $66.95
8 Reviews
Our Price: $151.95
4 Reviews
Our Price: $61.95
Sale Price: $59.95
You Save: $2.00
2 Reviews
Our Price: $8.97
Sale Price: $6.97
You Save: $2.00
4 Cylinder Engine Restorer & Lubricant (11 oz.)
6 Cylinder Engine Restorer & Lubricant (15 oz.)
8 Cylinder Engine Restorer & Lubricant (19 oz.)
SLICK 50 Synthetic Engine Treatment (15 oz)
Our Price: $8.99
Our Price: $10.99
2 Reviews
Our Price: $11.95
Fights performance robbing friction 18% better than synthetic motor oil alone
Our Price: $19.95
Sale Price: $18.45
You Save: $1.50
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)
Lubro-Moly MoS2 Anti-Friction Engine Treatment (300 ML)
2 Reviews
Stops leaks in the power steering, transmission, engine, differential, sunroof seals, etc.
Our Price: $13.59
2 Reviews
High-tech ceramic wear protection product for all motor oils
Our Price: $29.95
Sale Price: $26.95, 2/$53.90
You Save: $3.00
Our Price: $10.95, 2/$19.90
2 Reviews
Our Price: $8.95, 2/$15.90
Lubro-Moly Pro-Line Engine Flush (500 ML)
Lucas Low Viscosity Oil Stabilizer (12 oz)
Lucas Heavy Duty Oil Stabilizer (1 Quart)
Lucas Heavy Duty Oil Stabilizer (1 Gallon)
Our Price: $14.95, 2/$25.90
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, 12/$100.20
You Save: $2.00
10 Reviews
Our Price: $13.99
Sale Price: $12.49, 2/$21.90, 3/$32.85, 6/$65.70, 12/$126.00
You Save: $1.50
1 Review
Our Price: $29.95, 2/$56.90, 4/$124.00
Lucas Synthetic Heavy Duty Oil Stabilizer (1 Qt.)
Lucas Oil High Mileage oil Stabilizer (1 Qt)
Lucas Engine Oil Stop Leak (32 oz.)
Lucas Engine Oil Stop Leak (Gallon)
2 Reviews
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, 2/$23.90, 6/$72.95, 12/$139.80
You Save: $1.00
Effective in eliminating leaks, overheating and noise
Our Price: $14.95, 2/$24.98, 12/$151.80
3 Reviews
Our Price: $10.95, 2/$21.50, 12/$96.00
Our Price: $31.95, 2/$60.70, 4/$101.00
Lucas Motorcycle Oil Stabilizer (12 Oz)
Royal Purple Engine Break-In Oil (1 Qt.)
Lucas Engine Break-In Oil Additive (16 oz.)
STP Smoke Treatment (14.5 oz.)
1 Review
Our Price: $6.49, 2/$12.30, 12/$69.00
Our Price: $11.95
Our Price: $13.95, 2/$21.90, 12/$141.00
Our Price: $5.75, 12/$54.60
Blue Devil Rear Main Sealer (8 oz.)
Blue Devil Rear Main Sealer (8 oz.) - 6 Pack
Blue Devil Oil Stop Leak & Conditioner (8 oz)
Blue Devil Oil Stop Leak & Conditioner (8 oz) - 6 Pack
1 Review
Our Price: $13.95
Restores dried, cracked, and shrunken rubber seals
Our Price: $68.70
Our Price: $34.95
Sale Price: $19.95, 6/$103.80
You Save: $15.00
Repairs and reconditions rubber seals throughout any fluid oil system
Our Price: $103.80
Motor Medic Bearin' Seal Engine Oil Stop Leak (12 oz.)
Motor Medic Valve Medic Oil Detergent (12 oz.)
Motor Medic 5-Minute Motor Flush (32 oz.)
Rislone High Mileage Engine Treatment (16.9 oz.)
1 Review
Our Price: $3.99
3 Reviews
Our Price: $4.19, 12/$25.80
1 Review
Our Price: $8.99, 12/$61.80
1 Review
Our Price: $6.49, 12/$65.88
Rislone Ring Seal (16 oz.)
STP Oil Treatment (15 oz.)
Marvel Mystery Oil (16 oz.)
Marvel Mystery Oil (32 oz.)
Our Price: $4.95
1 Review
Our Price: $4.99, 3/$13.35, 6/$26.70, 12/$47.88
Retards the formation of power dissipating motor deposits, such as gums, varnish, and sludge
Our Price: $6.49
Sale Price: $5.49, 6/$28.14
You Save: $1.00
2 Reviews
Our Price: $8.49, 2/$15.30, 6/$44.94
  • "Overall experience is very good, prices are decent, and of course I'm glad that you guys open for us during this crisis, recommending website." (4/11/20)

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  • "1st time shopping at Auto Barn. Shopping was easy and pain free." (5/10/20)

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  • "Auto Barn had exactly what I was looking for and finding it was a "snap" (5/9/20)

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  • "All great-price, delivery time" (5/7/20)

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