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Design Engineering

Design Engineering 040104 Radiator Relief Coolant Additive for All Water Cooled Engines, 32 oz.

    • Based on 125 reviews
Condition: New
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Availability: Only 7 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Jan 10
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Size: 32 oz


Features

  • No mixing required; just add to cooling system and reduce engine operating temperature up to 30 degrees Fahrenheit
  • Formulated with a corrosion inhibitor and reduces pre-existing scale build-up
  • For use in all water cooled engines
  • Compatible with water and all anti-freeze mixtures
  • Safe with all alloys - 100% biodegradable, non-corrosive and non-toxic additive
  • Fit type: Universal Fit

Description

DEI Radiator Relief supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature up to 30°F reducing engine wear that occurs during extreme use. Radiator Relief is also formulated with a corrosion inhibitor that reduces mineral deposits. This is the first additive that maintains pH levels that otherwise fluctuate over time resulting in core damage.

Manufacturer: ‎Design Engineering


Brand: ‎Design Engineering


Model: ‎Radiator Relief


Item Weight: ‎2.13 pounds


Country of Origin: ‎China


Item model number: ‎40104


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎40104


OEM Part Number: ‎040104


Date First Available: November 21, 2005


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jan 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • Extra hot summer
Size: 32 oz
Traveling in Arizona in 115+ heat, I wanted a little extra cooling capability. When parked with engine running for AC, extra capability is great. It kept engine temp at 197 degrees while idling for 45 minutes in 115 degree air temp.
Reviewed in the United States on August 18, 2023 by RG
    • Worked well
Size: 16 oz
I’ve used on a couple cars and it helped out in summer well…good value good price
Reviewed in the United States on April 8, 2024 by LILO
    • This Works!
Size: 16 oz
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!! ... show more
Reviewed in the United States on July 20, 2018 by Robert P. Bowden
    • Stay cool
Size: 32 oz
I used this for an air to water intercooler setup
Reviewed in the United States on July 11, 2023 by Andrew
    • Didn't work!
Size: 16 oz (for Diesels)
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. ... show more
Reviewed in the United States on October 5, 2022 by Mark Clark
    • Dropped my temp.
Size: 16 oz
Worth the money. One bottle will treat 2 cars.
Reviewed in the United States on July 9, 2023 by N & M
    • works
Size: 16 oz
this one did good also, between flush and additive, I think the engine temp is down. This one says to add four more silly rules !!
Reviewed in the United States on September 6, 2013 by R. R, Jones
    • Perfect
Size: 16 oz
Worked great
Reviewed in the United States on August 7, 2023 by Amazon Customer

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