Shop engine additives

Sponsored
About our ads
$54.99
Sea Foam SF-16 Motor/Engine Treatment 6-PACK 16 Oz. Cans
Amazon.com
45
Free shipping
$54.99
Sea Foam SF-16 Motor/Engine Treatment 6-PACK 16 Oz. Cans
Amazon.com
45
$22.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
$22.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
$66.00
Lucas Heavy Duty Oil Stabilizer (1 Qt)-6 Pack
Amazon.com
Free shipping
$66.00
Lucas Heavy Duty Oil Stabilizer (1 Qt)-6 Pack
Amazon.com
Free shipping
$9.99
LIQUI MOLY Mos2 Anti-Friction Engine Treatment, 2009
Advance Auto Parts
5K+
$9.99
LIQUI MOLY Mos2 Anti-Friction Engine Treatment, 2009
Advance Auto Parts
5K+
$31.99
LIQUI MOLY Cera Tec Friction Motor Oil Additive, 300 Ml, 20002
Advance Auto Parts
30
$31.99
LIQUI MOLY Cera Tec Friction Motor Oil Additive, 300 Ml, 20002
Advance Auto Parts
30
$22.99
Slick 50 High Mileage Engine Treatment (15 Oz.), 750002
Advance Auto Parts
1K+
$22.99
Slick 50 High Mileage Engine Treatment (15 Oz.), 750002
Advance Auto Parts
1K+
$59.99
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive - 64 OZ
D&J Precision Machine
3K+
$59.99
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive - 64 OZ
D&J Precision Machine
3K+
$147.52
True Brand Engine Max Treatment & Oil Stabilizer
Santie Wholesale Oil Company
$147.52
True Brand Engine Max Treatment & Oil Stabilizer
Santie Wholesale Oil Company
$53.00
$64.50
Stanadyne Performance Formula Diesel Fuel Additive 64Oz
Dieselogic
17% off
$53.00
$64.50
Stanadyne Performance Formula Diesel Fuel Additive 64Oz
Dieselogic
$17.98
HOGWORKZ 13 Oz. Swine Saver Engine Brightener / Surface Restorer
Hogworkz
$17.98
HOGWORKZ 13 Oz. Swine Saver Engine Brightener / Surface Restorer
Hogworkz
$10.99
Seafoam Sea Foam Motor Treatment, Size 16 Oz | Overton's
Overton's
91
$10.99
Seafoam Sea Foam Motor Treatment, Size 16 Oz | Overton's
Overton's
91
$28.29
Marvel Mystery Oil MM14R Oil Additive, 1Gal, Red, Transparent
Zoro.com
579
$28.29
Marvel Mystery Oil MM14R Oil Additive, 1Gal, Red, Transparent
Zoro.com
579
$36.95
Hot Shots Secret FR3 Oil Additive
Mark DeCola Diesel Performance LLC
$36.95
Hot Shots Secret FR3 Oil Additive
Mark DeCola Diesel Performance LLC
$10.32
Star Tron Fuel Treatment Additive 770803 Replaces AYP/Electrolux:33500 Craftsman:33500 Star Tron:14308
Jacks Small Engines
$10.32
Star Tron Fuel Treatment Additive 770803 Replaces AYP/Electrolux:33500 Craftsman:33500 Star Tron:14308
Jacks Small Engines
$10.99
Seafoam SF-16 Sea Foam Motor Treatment 16Oz - SF16
Acme Tools
4K+
$10.99
Seafoam SF-16 Sea Foam Motor Treatment 16Oz - SF16
Acme Tools
4K+
$89.03
1 Gallon Power Additive - Klotz Synthetic Nitro Power Additive | Klotz Synthetic Lubricants KL-640
Summit Racing
5
$89.03
1 Gallon Power Additive - Klotz Synthetic Nitro Power Additive | Klotz Synthetic Lubricants KL-640
Summit Racing
5
$18.97
Carb Defender - Carburetor Cleaner Fuel Additive | 1
Driven Racing Oil LLC
9
$18.97
Carb Defender - Carburetor Cleaner Fuel Additive | 1
Driven Racing Oil LLC
9
$13.79
$14.99
JEGS Top Lube Fuel Additive With Grape Fragrance
JEGS High Performance
$13.79
$14.99
JEGS Top Lube Fuel Additive With Grape Fragrance
JEGS High Performance
$12.99
$17.99
Eastwood 4Oz. ZDDP Oil Additive
CJ Pony Parts
15
27% off
$12.99
$17.99
Eastwood 4Oz. ZDDP Oil Additive
CJ Pony Parts
15
$12.80
STAR TRON Enzyme Fuel Treatment, 8 Oz. 93008
Trailer Parts Superstore
274
$12.80
STAR TRON Enzyme Fuel Treatment, 8 Oz. 93008
Trailer Parts Superstore
274
$59.99
Hot Shot's Secret Stiction Eliminator Oil Additive - Hot Shot's Secret Stiction Eliminator Oil Additive - 64Oz.
Diesel Power Products
3K+
$59.99
Hot Shot's Secret Stiction Eliminator Oil Additive - Hot Shot's Secret Stiction Eliminator Oil Additive - 64Oz.
Diesel Power Products
3K+
$50.39
Hot Shot's Secret HSS64Z: Hot Shot's Secret Stiction Eliminator Oil Additive
Summit Racing
3
$50.39
Hot Shot's Secret HSS64Z: Hot Shot's Secret Stiction Eliminator Oil Additive
Summit Racing
3
$10.09
$11.09
JEGS Break-In/Engine Oil Supplement [12 Oz. Bottle]
JEGS High Performance
$10.09
$11.09
JEGS Break-In/Engine Oil Supplement [12 Oz. Bottle]
JEGS High Performance
$6.89
Marvel Mystery Oil 16Oz Oil Enhancer & Fuel Treatment - MM12R
Acme Tools
502
$6.89
Marvel Mystery Oil 16Oz Oil Enhancer & Fuel Treatment - MM12R
Acme Tools
502
$7.00
Sea Foam 16 Oz. Engine Treatment/Additive
iieemm.com
4K+
Free shipping
$7.00
Sea Foam 16 Oz. Engine Treatment/Additive
iieemm.com
4K+
$6.34
$8.99
Mechanic In A Bottle Fuel System Fix All Additive 4 Oz. Bottle
Walmart
55
29% off
$6.34
$8.99
Mechanic In A Bottle Fuel System Fix All Additive 4 Oz. Bottle
Walmart
55
$5.97
$9.39
Marvel Mystery Oil MM13R Oil Additive, 32 Oz, Red, Transparent
Zoro.com
6
36% off
$5.97
$9.39
Marvel Mystery Oil MM13R Oil Additive, 32 Oz, Red, Transparent
Zoro.com
6
$9.71
Royal Purple Radiator Additive 01600
SWAGPERFORMANCEPARTS
1K+
$9.71
Royal Purple Radiator Additive 01600
SWAGPERFORMANCEPARTS
1K+
$3.49
Carb Defender - Small Engine 1Oz Packet | 1
Driven Racing Oil LLC
$3.49
Carb Defender - Small Engine 1Oz Packet | 1
Driven Racing Oil LLC
$25.99
Star Brite Star Tron Enzyme Fuel Treatment 16Oz
Tackle Warehouse Bing Product Feeds
87
$25.99
Star Brite Star Tron Enzyme Fuel Treatment 16Oz
Tackle Warehouse Bing Product Feeds
87
$7.00
Sea Foam 16 Oz. Engine Treatment/Additive
Mc Mu
$7.00
Sea Foam 16 Oz. Engine Treatment/Additive
Mc Mu
$443.96
Sea Foam SF128 Motor Treatment, 1 Gal Can
Zoro.com
4
$443.96
Sea Foam SF128 Motor Treatment, 1 Gal Can
Zoro.com
4
$22.35
Ring Free Plus Fuel Additive 12Oz
SBT
$22.35
Ring Free Plus Fuel Additive 12Oz
SBT
$19.99
Slick 50 Engine Treatment 15 Oz
Ace Hardware
6
$19.99
Slick 50 Engine Treatment 15 Oz
Ace Hardware
6
$6.74
Stp High Mileage Oil Treatment + Stop Leak Engine Oil Additive, 15 Fl Oz
Walmart
109
$6.74
Stp High Mileage Oil Treatment + Stop Leak Engine Oil Additive, 15 Fl Oz
Walmart
109
$170.99
Prolube Oil Treatment 1 Gallon , Increased HP, Engine Reliability Oil Additive
US eBay
Free shipping
$170.99
Prolube Oil Treatment 1 Gallon , Increased HP, Engine Reliability Oil Additive
US eBay
Free shipping

Shop engine additives

Sponsored
About our ads
$28.29
Marvel Mystery Oil MM14R Oil Additive, 1Gal, Red, Transparent
Zoro.com
579
$28.29
Marvel Mystery Oil MM14R Oil Additive, 1Gal, Red, Transparent
Zoro.com
$36.95
Hot Shots Secret FR3 Oil Additive
Mark DeCola Diesel Performance LLC
$36.95
Hot Shots Secret FR3 Oil Additive
Mark DeCola Diesel Performance LLC
$10.32
Star Tron Fuel Treatment Additive 770803 Replaces AYP/Electrolux:33500 Craftsman:33500 Star Tron:14308
Jacks Small Engines
$10.32
Star Tron Fuel Treatment Additive 770803 Replaces AYP/Electrolux:33500 Craftsman:33500 Star Tron:14308
Jacks Small Engines
$10.99
Seafoam SF-16 Sea Foam Motor Treatment 16Oz - SF16
Acme Tools
4K+
$10.99
Seafoam SF-16 Sea Foam Motor Treatment 16Oz - SF16
Acme Tools
$89.03
1 Gallon Power Additive - Klotz Synthetic Nitro Power Additive | Klotz Synthetic Lubricants KL-640
Summit Racing
5
$89.03
1 Gallon Power Additive - Klotz Synthetic Nitro Power Additive | Klotz Synthetic Lubricants KL-640
Summit Racing
$18.97
Carb Defender - Carburetor Cleaner Fuel Additive | 1
Driven Racing Oil LLC
9
$18.97
Carb Defender - Carburetor Cleaner Fuel Additive | 1
Driven Racing Oil LLC
$13.79
$14.99
JEGS Top Lube Fuel Additive With Grape Fragrance
JEGS High Performance
$13.79
$14.99
JEGS Top Lube Fuel Additive With Grape Fragrance
JEGS High Performance
$12.99
$17.99
Eastwood 4Oz. ZDDP Oil Additive
CJ Pony Parts
15
27% off
$12.99
$17.99
Eastwood 4Oz. ZDDP Oil Additive
CJ Pony Parts
$12.80
STAR TRON Enzyme Fuel Treatment, 8 Oz. 93008
Trailer Parts Superstore
274
$12.80
STAR TRON Enzyme Fuel Treatment, 8 Oz. 93008
Trailer Parts Superstore
$59.99
Hot Shot's Secret Stiction Eliminator Oil Additive - Hot Shot's Secret Stiction Eliminator Oil Additive - 64Oz.
Diesel Power Products
3K+
$59.99
Hot Shot's Secret Stiction Eliminator Oil Additive - Hot Shot's Secret Stiction Eliminator Oil Additive - 64Oz.
Diesel Power Products
$50.39
Hot Shot's Secret HSS64Z: Hot Shot's Secret Stiction Eliminator Oil Additive
Summit Racing
3
$50.39
Hot Shot's Secret HSS64Z: Hot Shot's Secret Stiction Eliminator Oil Additive
Summit Racing
$10.09
$11.09
JEGS Break-In/Engine Oil Supplement [12 Oz. Bottle]
JEGS High Performance
$10.09
$11.09
JEGS Break-In/Engine Oil Supplement [12 Oz. Bottle]
JEGS High Performance
$6.89
Marvel Mystery Oil 16Oz Oil Enhancer & Fuel Treatment - MM12R
Acme Tools
502
$6.89
Marvel Mystery Oil 16Oz Oil Enhancer & Fuel Treatment - MM12R
Acme Tools
$7.00
Sea Foam 16 Oz. Engine Treatment/Additive
iieemm.com
4K+
Free shipping
$7.00
Sea Foam 16 Oz. Engine Treatment/Additive
iieemm.com
$6.34
$8.99
Mechanic In A Bottle Fuel System Fix All Additive 4 Oz. Bottle
Walmart
55
29% off
$6.34
$8.99
Mechanic In A Bottle Fuel System Fix All Additive 4 Oz. Bottle
Walmart
$5.97
$9.39
Marvel Mystery Oil MM13R Oil Additive, 32 Oz, Red, Transparent
Zoro.com
6
36% off
$5.97
$9.39
Marvel Mystery Oil MM13R Oil Additive, 32 Oz, Red, Transparent
Zoro.com
$9.71
Royal Purple Radiator Additive 01600
SWAGPERFORMANCEPARTS
1K+
$9.71
Royal Purple Radiator Additive 01600
SWAGPERFORMANCEPARTS
$3.49
Carb Defender - Small Engine 1Oz Packet | 1
Driven Racing Oil LLC
$3.49
Carb Defender - Small Engine 1Oz Packet | 1
Driven Racing Oil LLC

Shop engine additives

Sponsored
About our ads
$54.99
Sea Foam SF-16 Motor/Engine Treatment 6-PACK 16 Oz. Cans
Amazon.com
45
Free shipping
$54.99
Sea Foam SF-16 Motor/Engine Treatment 6-PACK 16 Oz. Cans
Amazon.com
45
$22.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
$22.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
$66.00
Lucas Heavy Duty Oil Stabilizer (1 Qt)-6 Pack
Amazon.com
Free shipping
$66.00
Lucas Heavy Duty Oil Stabilizer (1 Qt)-6 Pack
Amazon.com
Free shipping
$9.99
LIQUI MOLY Mos2 Anti-Friction Engine Treatment, 2009
Advance Auto Parts
5K+
$9.99
LIQUI MOLY Mos2 Anti-Friction Engine Treatment, 2009
Advance Auto Parts
5K+
$31.99
LIQUI MOLY Cera Tec Friction Motor Oil Additive, 300 Ml, 20002
Advance Auto Parts
30
$31.99
LIQUI MOLY Cera Tec Friction Motor Oil Additive, 300 Ml, 20002
Advance Auto Parts
30
$22.99
Slick 50 High Mileage Engine Treatment (15 Oz.), 750002
Advance Auto Parts
1K+
$22.99
Slick 50 High Mileage Engine Treatment (15 Oz.), 750002
Advance Auto Parts
1K+
$59.99
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive - 64 OZ
D&J Precision Machine
3K+
$59.99
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive - 64 OZ
D&J Precision Machine
3K+
$147.52
True Brand Engine Max Treatment & Oil Stabilizer
Santie Wholesale Oil Company
$147.52
True Brand Engine Max Treatment & Oil Stabilizer
Santie Wholesale Oil Company
$53.00
$64.50
Stanadyne Performance Formula Diesel Fuel Additive 64Oz
Dieselogic
17% off
$53.00
$64.50
Stanadyne Performance Formula Diesel Fuel Additive 64Oz
Dieselogic
$17.98
HOGWORKZ 13 Oz. Swine Saver Engine Brightener / Surface Restorer
Hogworkz
$17.98
HOGWORKZ 13 Oz. Swine Saver Engine Brightener / Surface Restorer
Hogworkz
$10.99
Seafoam Sea Foam Motor Treatment, Size 16 Oz | Overton's
Overton's
91
$10.99
Seafoam Sea Foam Motor Treatment, Size 16 Oz | Overton's
Overton's
91
$28.29
Marvel Mystery Oil MM14R Oil Additive, 1Gal, Red, Transparent
Zoro.com
579
$28.29
Marvel Mystery Oil MM14R Oil Additive, 1Gal, Red, Transparent
Zoro.com
579
$36.95
Hot Shots Secret FR3 Oil Additive
Mark DeCola Diesel Performance LLC
$36.95
Hot Shots Secret FR3 Oil Additive
Mark DeCola Diesel Performance LLC
$10.32
Star Tron Fuel Treatment Additive 770803 Replaces AYP/Electrolux:33500 Craftsman:33500 Star Tron:14308
Jacks Small Engines
$10.32
Star Tron Fuel Treatment Additive 770803 Replaces AYP/Electrolux:33500 Craftsman:33500 Star Tron:14308
Jacks Small Engines
$10.99
Seafoam SF-16 Sea Foam Motor Treatment 16Oz - SF16
Acme Tools
4K+
$10.99
Seafoam SF-16 Sea Foam Motor Treatment 16Oz - SF16
Acme Tools
4K+
$89.03
1 Gallon Power Additive - Klotz Synthetic Nitro Power Additive | Klotz Synthetic Lubricants KL-640
Summit Racing
5
$89.03
1 Gallon Power Additive - Klotz Synthetic Nitro Power Additive | Klotz Synthetic Lubricants KL-640
Summit Racing
5
$18.97
Carb Defender - Carburetor Cleaner Fuel Additive | 1
Driven Racing Oil LLC
9
$18.97
Carb Defender - Carburetor Cleaner Fuel Additive | 1
Driven Racing Oil LLC
9
$13.79
$14.99
JEGS Top Lube Fuel Additive With Grape Fragrance
JEGS High Performance
$13.79
$14.99
JEGS Top Lube Fuel Additive With Grape Fragrance
JEGS High Performance