Super Radiator Flush (1201)

  • Do I have to drain my radiator first?

    Yes, per the label directions you are supposed to drain the system and install just water.

  • Does Super Radiator Flush contain acid?

    No, and it requires no neutralizing.

  • Can this be used with copper, aluminum and plastic radiators?

    Yes, since this contains no acid, you can use in old and newer vehicles with copper, aluminum and plastic radiators.

  • How much do I put in my radiator?

    1 bottle treats a standard passenger vehicle/light truck. Use every time you change your antifreeze.

  • Will Bar’s Leaks Radiator Flush hurt my cooling system?

    No, Bar’s Leaks Super Radiator Flush is a non-acid formula and is safe to use on all cooling system materials. It is harmless to all parts of the cooling system, including aluminum.

  • What are the dosage recommendations?

    Use one 22 oz. bottle of Super Radiator Flush, part number 1201, for every 12 quarts (3 gallons) of capacity.

  • The bottle froze before I was able to use it, what can I do?

    If the bottle did not break from freezing, just let the product thaw out, shake well, and use as normal.

This advanced radiator flush formula will help your cooling system by removing deposits that build up over time and cause overheating. It’s an innovative, garage-tested formula that’s specifically designed to clean solder bloom, oily residue, rust and scale. Its non-acid formula is safe to use on all cooling system materials.

Our radiator flush products emerge from a careful research and testing process undertaken by our team of top-flight chemists. We focus on creating coolant flush and other products that are simple to use, effective and affordable. This helps save you time and money versus visiting a mechanic — a trip that can be a serious inconvenience and that can leave you with a hefty bill to pay.

Use this product every time you change your antifreeze and it’ll be sure to keep your car running safely and smoothly no matter where the road takes you. This is the key when it comes to getting the most out of your investment in a vehicle. The better you take care of your vehicle with cooling systems flushes and other maintenance products, the better your vehicle will take care of you. And there’s no better way to take care of your car with a radiator flush than to choose Bar’s Leaks.

Trusted by Pros: A Radiator Flush That Gets the Job Done

We’ve been creating and offering chemical repair solutions for nearly 70 years at Bar’s Leaks. What’s allowed us to stay in business this long? Our products work. From our radiator flush products to solutions for head gasket, cooling systems, engine oil, power steering, transmissions and more, we focus on creating products that are affordable and easy to use — and, above all, effective.

Not all brands are the same. You’ll find plenty of radiator flush alternatives that claim to get the job done, but many of these products don’t work as effectively as they claim. At Bar’s Leaks, each of our products — our cooling system flush and much more — is time-tested and customer-proven to get the job done.

Made in the U.S.A., just an hour outside of Detroit, each Bar’s Leaks product is the result of care, time and attention to detail. As tens of millions of customers have discovered through nearly seven decades, you can count on Bar’s Leaks when you need the best in coolant flush products.

Get your fast, effective, easy-to-use radiator flush today.

Leave a Review

  • “I tried another brand's product to flush my very nasty radiator. Didn't work, my system was still dirty after the flush. Counterperson at AutoZone said to try this. Took it home, and it cleaned everything out super well in one step. Not all products work the same. I'd choose this one again if I needed another flush.”

    George, J. - Harrisburg, PA
  • “I don't normally go with Bar's Leaks for flush type stuff, but my local mechanic who works on our aging Chrysler minivan said it's the best flush out there, even better than Prestone. This stuff worked great, is affordable, and does what it says. Bar's is known for leak stopping so I guess it makes sense they know how to flush a radiator too, LOL.”

    Jack M. - Sterling Heights, MI