Buy ✨ Design Engineering 040200 Radiator Relief Coolant Additive For All Water Cooled Engines, 16 Oz 🔔

8 reviews for Buy ✨ Design Engineering 040200 Radiator Relief Coolant Additive For All Water Cooled Engines, 16 Oz 🔔

1. 

   Rated 4 out of 5

   JayGoat – October 5, 2014

   Simply put, it works. Before adding this additive to my 05 Pontiac GTO, I’d run around 180 on the highway and steadily climb to 200 in slow traffic. This is with an all aluminum radiator, 160 thermostat, and a 30/70 Zerek G-05/distilled water ratio. After adding the DEI additive, I’m around 175 on the highway. However, I’ve yet to crest 190 while in slow traffic. It climbs from 175 much slower and cools off much quicker once I get moving again.In my opinion, works much better than Water Wetter which I noticed no difference on.

2. 

   Rated 4 out of 5

   eugene wilson – March 8, 2015

   I used it in my baseboard heat system! It dropped the return temperature by 5 degrees from a 60 degree drop (180 to 120) to a 65 degree drop (180 to 115) This tells me the extra 5 degrees were radiated into heating the house! not just returned back to the furnace. It has also shortened the run times of the furnace. This would be due to a better heat transfer in the boiler from the fire box to the water jacket!

3. 

   Rated 4 out of 5

   Robert P. Bowden – July 19, 2018

   I have a BMW… It’s about 10 years old and like a lot of other BMWs it has cooling issues… I live in LA and usually the summer time is the only time it’s an issue… Lots of idling because of traffic…It’s been hot lately and so I thought I would give this a try because my mechanic has tried a bunch of things and the temp gauge will sometimes “creep up.” I drove it today and it was in the 80s and zero creeping problem ….for the first time in a while (with it being that warm) iEnough said! (I run straight distilled in the summer and this has anti corrosion additives. Set!!

4. 

   Rated 4 out of 5

   Gregory G. Maze – June 1, 2019

   I liked what I read about it but the car I have does not have a temperature gauge! So how can I really tell? I have a GM Northstar V8 and it gets hot!!

5. 

   Rated 4 out of 5

   robert amrine jr – May 13, 2020

   Use this in all my cars.Awesome productSeller is greatWill use again as needed

6. 

   Rated 5 out of 5

   Anthony – July 5, 2022

   Overall temp isn’t that much lower but the turbos don’t seem to get as hot with this in my coolant tank. Way less turbo heat sink.

7. 

   Rated 5 out of 5

   Eric – August 16, 2022

   Texas heat forced me to try this out. I flushed my system and did a 90/10 mix and the results are great. It keeps my truck running cool no matter how hard I push her.

8. 

   Rated 5 out of 5

   Mark Clark – October 4, 2022

   Dumped this in my Humvee pressurized coolant reservoir and it didn’t lower temps at all. It has a hydraulic fan that turns on like clockwork at a specific point in my commute, so even a 5* drop in temp would be noticeable. Zero change after driving for a week. It might be better if I ran just this with distilled water. Also, smells like urine.