Best At GlanceTop 51 Automotive Cooling System Additives
Last Updated: Nov 15, 2024 • 32,797 reviews analyzed
Our most popular Automotive Cooling System Additives products based on sales, online popularity and other expert reviews. Updated frequently.
#1
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
4.5
On popular sellers 12 days for last 30 days
Found on 2022-02-11
#2
Red Line (80204 Water Wetter - Coolant Additives - 12 Oz Bottle (2 Pack)
3.5
On popular sellers 15 days for last 30 days
Found on 2023-08-31
#3
Penray 200164 2001 On-Line Cooling System Cleaner - 1/2-Gallon Jug
3
On popular sellers 15 days for last 30 days
Found on 2024-03-11
#4
Wynns Radiator Stop Leak 325ml
2.8
On popular sellers 12 days for last 30 days
Found on 2024-05-04
#5
K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair, 16 fl. oz
2.8
On popular sellers 12 days for last 30 days
Found on 2023-01-06
#6
Prestone AF-KIT Flush 'N Fill Kit
2.8
On popular sellers 12 days for last 30 days
Found on 2022-10-26
#7
Genuine Mopar Fluid 4318060AB Limited Slip Additive - 4 oz. Bottle
2.8
On popular sellers 12 days for last 30 days
Found on 2022-10-26
#8
Liqui Moly Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956
2.7
On popular sellers 12 days for last 30 days
Found on 2023-01-31
#9
Subaru SOA635071 OEM Coolant System Conditioner
2.7
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#10
Genuine GM (12378255) Fluid 3634621 Cooling System Seal Tablet - 4 Grams, (Pack of 5)
2.7
On popular sellers 12 days for last 30 days
Found on 2023-01-17
#11
Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 oz.
2.6
On popular sellers 12 days for last 30 days
Found on 2022-01-10
#12
Liqui Moly Radiator Cleaner | 300 ml | Cooler additive | SKU: 2051
2.6
On popular sellers 12 days for last 30 days
Found on 2023-01-17
#13
Red Line 80204 Engine Coolant Additive Supercool with Waterwetter - 12 Ounce (2 Pack)
2.6
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#14
Motorcraft Ford Diesel Coolant Additive VC8 - 3 Bottles
2.6
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#15
Red Line 80205, Supercool Extreme Powersports Coolant, Safe for Track, Street, Off-Roa - 1/2 Gallon (64 Ounces)
2.6
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#16
Liqui Moly 20132 Radiator Stop Leak, 0.25 l, 1 Pack
2.6
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#17
Bar's Leaks High Mileage Cooling System Repair
2.6
On popular sellers 12 days for last 30 days
Found on 2022-10-26
#18
Motorcraft VC8 Diesel engine coolant additive - 1 Pint(473 ml)
2.5
On popular sellers 12 days for last 30 days
Found on 2022-01-10
#19
ACDelco GM Original Equipment 10-5057 Engine Cooling System Tracer Dye - 1 oz
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-06
#20
Genuine GM Fluid 12378255 Cooling System Seal Tablet - 4 Grams, (Pack of 5)
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-17
#21
Errecom A/C Systems Leak Stop Stops Refrigerant Gas leaks up to 0.3 mm
2.5
On popular sellers 12 days for last 30 days
Found on 2024-05-04
#22
EVANS Cooling Systems EC42001 Waterless Prep Fluid, 128 fl. oz.
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#23
FleetGuard Coolant Test Kit Strips 3 Way Each CC2602B
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#24
Genuine Fleetguard - Cummins Filtration Genuine Fleetguard Cummins Filtration, CC2602A Fleetguard Coolant Analysis (Pack of 2)
2.5
On popular sellers 12 days for last 30 days
Found on 2023-05-16
#25
GOLD EAGLE/303 PRODUCTS ASBPI12, 0.71 Oz. AlumaSeal Radiator Sealer
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#26
Royal Purple 01600 Purple Ice Radiator Coolant Additive 12 oz. Bottle Pack of 6
2.5
On popular sellers 12 days for last 30 days
Found on 2023-03-21
#27
Cyclo - Cooling System Stop Leak & Sealer
2.5
On popular sellers 12 days for last 30 days
Found on 2022-01-07
#28
Chrysler Genuine Accessories 4318005 Stop Leak Pellet
2.5
On popular sellers 12 days for last 30 days
Found on 2022-01-07
#29
K&W Instant Cooling System Stop Leak, 15 Fl Oz, (Pack of 6), 401214x6
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-31
#30
Shell Rotella Extended Life ELC Anti-Freeze + Coolant, Concentrate (1 Gallon, Single Pack)
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#31
Design Engineering 40200 Radiator Relief Coolant Additive for All Water Cooled Engines, 16 oz.
2.5
On popular sellers 12 days for last 30 days
Found on 2022-10-26
#32
Bar's Leaks J-100 DiFM Cooling System Treatment - 5 Grams, Tan
2.5
On popular sellers 12 days for last 30 days
Found on 2022-01-10
#33
K-Seal ST5501 Permanent Coolant Leak Repair
2.5
On popular sellers 12 days for last 30 days
Found on 2023-03-21
#34
Engine Ice TYBW-1001 Plastic Shine - 20oz.
2.5
On popular sellers 12 days for last 30 days
Found on 2024-08-05
#35
XADO ATOMEX Stop Leak Radiator Coolant/Antifreeze Additive - Restore Radiator Parts & Prevent Future Damage (Bottle, 250 ml)
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#36
The 3 Pack of Irontite Additives - Thoro-Flush, All Weather Seal and Ceramic Motor Seal. 468-9190-16
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#37
MPT Cooler - 12 oz. All-Season Automotive Cooling System Additive – EXTENDS Engine Life, Prevents OVERHEATING
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#38
Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 oz., 2 count.
2.5
On popular sellers 12 days for last 30 days
Found on 2024-05-04
#39
Omix-Ada | 17118.26 | Cooling System Kit | Fits 1991-1995 Jeep Wrangler YJ 4.0L
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#40
Justice Brothers Radiator Stop Leak
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#41
Moroso 35520 All Weather Seal - 1 Pint
2.5
On popular sellers 12 days for last 30 days
Found on 2022-04-25
#42
Coolant Vacuum Refill Kit Universal Coolant Vacuum Filler Tool with 5 Adapters Cooling System Vacuum Purge and Refill Kit Radiator Coolant Refill Tool Kit Coolant Bleeder Kit Vacuum Coolant Fill Kit
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#43
Prestone AS195 Complete Care and Stop Leak - 22 oz.
2.5
On popular sellers 12 days for last 30 days
Found on 2022-03-01
#44
Design Engineering 040208 Chill Charger Water-to-Air Intercooler Additive, 16 oz.
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-17
#45
Evans Coolant EC61001 Heavy Duty Waterless Coolant, 4 Gallon Pack
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#46
Dike Radiator Stop Leak - 1 Pint
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-22
#47
Smilyeez Listing for BG Cooling System Flush - Coolant Service Kit PN 5901 Includes BG Universal Cooling System Cleaner PN 54
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#48
ABRO Heavy Duty Stop Leak Liquid, 11 oz., Fast-Acting, Safely Seals Leaks, Permanent Seal for Cooling Leaks, Lubricant & Rust
2.5
On popular sellers 12 days for last 30 days
Found on 2023-08-31
#49
Omix-Ada | 17118.29 | Cooling System Kit | Fits 2000-2006 Jeep Wrangler TJ 4.0L
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-10
#50
Royal Purple 01600 Purple Ice Radiator Coolant Additive 12 oz. Bottle Pack of 4
2.5
On popular sellers 12 days for last 30 days
Found on 2023-03-08
#51
Motul MoCool (Radiator Additive) (Pack of 4)
2.5
On popular sellers 12 days for last 30 days
Found on 2023-01-06
EDITOR'S NOTES
During our Automotive Cooling System Additives research, we found hundreds Automotive Cooling System Additives products and shortlisted 51 quality products. We collected and analyzed 32,797 customer reviews through our big data system to write the Automotive Cooling System Additives list. We found that most customers choose Automotive Cooling System Additives with an average rating of 2.3 . The seller of top 1 product with rating 4.5 and has received honest feedback from 10,289 consumers.