Anti-Freeze, Coolant and Radiator Additives

Anti-Freeze, Coolant and Radiator AdditivesAt Autobarn we provide a wide variety of radiator additives that can provide rust protection, better lubrication, or even lowering coolant temperatures. Check out our radiator additives by Kool-It, Pentofrost, Royal Purple, Red Line, Gunk, and Tow Kool.
Blue Devil Radiator Flush & Oil Degreaser (32 oz)
Blue Devil Coolant Stop Leak (16 oz)
Blue Devil Radiator Flush - (32oz.)
Blue Devil Radiator Flush - (32oz.) - 6 Pack
Works hard on your cooling system to restore efficiency to keep your vehicle operating at peak levels
Our Price: $9.95
Seal leaks throughout your vehicles cooling system
Our Price: $23.95
Extends vehicle's life & performance
Our Price: $9.95
Extends vehicle's life & performance
Our Price: $37.50
Blue Devil Engine Cool (16 oz)
Blue Devil Engine Cool (16 oz) - 6 Pack
Kool-It Engine Coolant Treatment (16 oz.)
Kool-It Evaporator and Heater Core Foam Cleaner (6 oz)
Guaranteed to reduce the engine operating temperature up to 25° F
Our Price: $12.65
Guaranteed to reduce the engine operating temperature up to 25° F
Our Price: $75.00
Cools engines 5-10 degrees (F) when used with antifreeze, and 15-25 degrees (F) when used with straight water
Our Price: $8.99
Removes and neutralizes harmful contaminants that thrive in air conditioning and heating systems
Our Price: $11.95
Pentofrost A1 Anti-Freeze/Coolant (1 Gal)
Pentofrost E Phosphate-Free Anti-Freeze/Coolant Concentrate (1.5 Liters)
Pentofrost E Phosphate-Free Anti-Freeze/Coolant Concentrate (5 Liters)
Pentofrost NF Longtime Anti-Freeze/Coolant For Aluminum Engines (1.5 L)
Our Price: $33.95
Our Price: $14.95, 2/$28.30
Our Price: $47.95
Our Price: $13.95, 2/$26.50
Pentofrost SF Lifetime Anti-Freeze/Coolant For Aluminum Engines (1.5 L)
Royal Purple Purple Ice Radiator Super Coolant (12 oz.)
Redline Water Wetter (12 oz)
Our Price: $19.95
Sale Price: $17.95, 2/$33.90
You Save: $2.00
Our Price: $15.99
Sale Price: $13.99
You Save: $2.00
Our Price: $12.95
Sale Price: $11.95
You Save: $1.00
  • "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)

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

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

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

    -
Read All Testimonials