Anti-Freeze, Coolant and Radiator Additives

At 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) Works hard on your cooling system to restore efficiency to keep your vehicle operating at peak levels Our Price: $10.95, 6/$58.50	Blue Devil Coolant Stop Leak (16 oz) 1 Review Seal leaks throughout your vehicles cooling system Our Price: $26.95 Sale Price: $24.95, 6/$143.70 You Save: $2.00	Blue Devil Radiator Flush (32 oz) Extends vehicle's life & performance Our Price: $8.99 Sale Price: $7.99 You Save: $1.00	Blue Devil Radiator Flush (32 oz) - 6 Pack Extends vehicle's life & performance Our Price: $41.94


Blue Devil Engine Cool (16 oz) Guaranteed to reduce the engine operating temperature up to 25° F Our Price: $13.99	Blue Devil Engine Cool (16 oz) - 6 Pack Guaranteed to reduce the engine operating temperature up to 25° F Our Price: $75.00	Kool-It Engine Coolant Treatment (16 oz.) Cools engines 5-10 degrees (F) when used with antifreeze, and 15-25 degrees (F) when used with straight water Our Price: $13.99 Sale Price: $11.99 You Save: $2.00	Kool-It Evaporator and Heater Core Foam Cleaner (6 oz) 1 Review Removes and neutralizes harmful contaminants that thrive in air conditioning and heating systems Our Price: $14.95, 2/$27.90, 6/$83.70


Pentofrost A1 Anti-Freeze/Coolant (1 Gal) Our Price: $33.95	Pentofrost E Phosphate-Free Anti-Freeze/Coolant Concentrate (1.5 Liters) 1 Review Our Price: $18.45, 2/$34.90	Pentofrost E Phosphate-Free Anti-Freeze/Coolant Concentrate (5 Liters) Our Price: $47.95	Pentofrost NF Longtime Anti-Freeze/Coolant For Aluminum Engines (1.5 L) Our Price: $15.95, 2/$30.90


Pentofrost SF Lifetime Anti-Freeze/Coolant For Aluminum Engines (1.5 L) 1 Review Our Price: $18.95, 2/$33.90	Royal Purple Purple Ice Radiator Super Coolant (12 oz.) Our Price: $15.99 Sale Price: $13.99 You Save: $2.00	Redline Water Wetter (12 oz) 4 Reviews Our Price: $18.95 Sale Price: $16.95 You Save: $2.00

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"Available product, easy order, quick shipping, and excellent product. Highly recommend Auto Barn, and this product!" (7/17/22)
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