BlueDevil Products00203 Radiator Flush & Oil Degreaser - 1 Quart

I have a Jeep TJ that the previous owner mixed the wrong radiator fluid. It looked like rusty mud. I throughly flushed the radiator with hose water to get as much sediment out. I let that all drain out and closed the petcock. I poured the radiator cleaner in first then added my water until the system was full. I then ran the vehicle for an hour around town. Let the vehicle cool and drained the fluid. It took me about 8-10 of these flushes to get the system clean. Don’t not leave this cleaner in for more than 4 hours. I also did my flush in the summer. Do not use water to flush the system in the winter months.I can’t say that the cleaner made a difference. However it didn’t hurt. It’s important to keep your cooling system clean. Like I said I had to do 8-10 flushes on my system but my cooling system was really bad. The vehicle runs very cool now and the heater works really well. I hope this helps.

I was skeptical but this stuff does work well. I have a 36 Street Rod with a Hemi. The radiator is small in comparison and there is no room for anything bigger than what's in there,20"H X 18"W and it was plugged up, not corroded or crusty but with brown sludge. I could see the waterways with my snake camera. Every other one was plugged. It took 4 flushes, 4 bottles, and now it is spotless and shiny aluminum inside. No more overheating. I highly recommend this.

Worked as stated

Someone left this old diesel filled with water and it sat for years. I flushed it out first just to get the horrible stuff out first. I then filled and added the treatment and ran it a few time over 4hrs to circulate it. Drained and saved it in a 5 gallon container for disposal at the recycling center. Still had lots of rusty water so I repeated it again. 2nd time was the charm! Works good.

Product came quickly and arrived undamaged and well packed. I had oil in my cooling system because of a leaking Head Gasket. This worked perfect to clean out the system. I used it together with the Blue Devil Sealer and it fixed my problem.

Great product, followed instructions to the letter. And the end result were 100% successful

I’m not a big fan of trying the product like this. Usually I just replace what needs to be replaced but my heater core was so hard to get to wanted to try something less evasive. Not only does my engine not overheat anymore, but my heater core works. This product clean both my radiator and heater core out.

Stuff works great. Used it in a Kawasaki 650 that looked pretty clean before using it but after running this for about 15 minutes and letting it sit for about 30 minutes there was a lot of stuff that came out