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Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.

4.6 4.6 out of 5 stars 1,624 ratings
$12.40 with 22 percent savings
List Price: $15.99

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Purchase options and add-ons

  • OPTIMIZES PROTECTION
  • Prevents erosion and electrolysis
  • Compatible with all coolants types
  • Contains lubricants to protect the water pump
  • Fit type: Vehicle Specific
› See more product details

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Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.
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Important information

Legal Disclaimer

Royal Purple ROY01600, Purple ice, does not contain glycol and is safe and legal for track use.

Top Brand: Royal Purple

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Product Description

Product Description

Purple Ice is a high performance, synthetic, radiator coolant additive. It reduces engine heat by reducing the surface tension of the radiator fluids for improved heat transfer. Purple Ice fosters optimum coolant flow by helping to prevent formation of scale deposits in the radiator. It also lubricates the water pump seals. Purple Ice should always be used in conjunction with antifreeze in regions where freezing temperatures occur. Purple Ice is recommended for any water/glycol pressurized cooling system, including those using the traditional green silicate based glycols or the newer OAT or HOAT based glycols.

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Royal Purple's Purple Ice is a high performance radiator conditioner. Its advanced 2-in-1 corrosion inhibitor and wetting agent provides year-round defense against corrosion. Purple Ice also reduces the surface tension of the radiator coolant to help reduce engine temperatures.

Reduces Coolant Temperatures

Extensive testing confirms Purple Ice reduces coolant temperatures better than comparable products while providing extra corrosion protection.

Performance Advantages
  • Up to 22°F Reduction of Coolant Temperature--Reduces surface tension of a coolant allowing more heat to transfer outside the radiator resulting in more horsepower
  • Maximum Protection--Reduces hot spots in the engine and cylinder heads, reducing the possibility of engine failure
  • Cleans and Extends Equipment Life--Helps prevent overheating, keeps the system clean and extends the life of the water pump
  • Superior Corrosion Protection--Enhanced aluminum protection that combats corrosion, electrolysis and erosion
  • Compatible--Provides complete protection in straight water or coolant/anti-freeze mixes and safe for track use
Directions: Shake Well Before Using

Make sure cooling system works properly and is free of blockage and corrosion. Bottled, filtered drinking water is recommended. Distilled water not recommended, unless mixed with 50% antifreeze.

Use one (1) oz per quart of coolant with 50/50 mix or two (2) oz per quart of coolant with straight water. Replace annually or every 30,000 miles, whichever comes first.

IMPORTANT NOTES: Purple Ice does NOT provide freeze protection. Follow manufacturer recommendations when antifreeze is required. Royal Purple recommends that you drain and flush your system if you’ve used another brand of coolant additive. Purple Ice will NOT correct any pre-existing mechanical deficiencies of a cooling system.

Distilled water should not be used in straight water-cooling systems with aluminum radiators. Filtered drinking water or tap water is recommended for such cooling systems.

Purple Ice--FAQs

Is Purple Ice compatible with other cooling system additives?

Purple Ice should not be used with other heat-transfer or cooling enhancing products or “water wetters”. If such a product has been used in the cooling system, the system should be drained and flushed before using Purple Ice.

Purple Ice is compatible with cooling system additives intended to stop or slow leaks. Please note that such stop-leak products often typically put a coating on the interior surfaces of the cooling system, so the effects of Purple Ice may be diminished.

Is Purple Ice compatible with anti-freeze in my car?

Purple Ice is compatible with all current OEM/factory and major brand automotive anti-freeze. This includes traditional green ethylene glycols, as well as OAT/HOAT antifreezes (e.g. DexCool; Ford and Chrysler orange, gold, pink; European and Japanese OEM red, pink, etc.).

What water/anti-freeze concentration is recommended when using Purple Ice?

Purple Ice may be added to any anti-freeze/water mix; however, testing has shown higher water concentrations yield greater cooling benefits. While Purple Ice does contain corrosion inhibitors as well as lubricants to compensate for a lower anti-freeze/water concentration, Royal Purple recommends a minimum of 20 percent antifreeze concentration be used in street driven vehicles because Purple Ice has no effect on the boiling and/or freezing point of water.

How much Purple Ice do I need to add to my cooling system?

When using Purple Ice with an antifreeze/water mix, Royal Purple recommends adding 1 ounce of Purple Ice per quart of cooling system capacity. For straight water (racing) applications, Royal Purple recommends adding 2 ounces of Purple Ice per quart of cooling system capacity.

How often should I add Purple Ice to my radiator?

When used with antifreeze, Purple Ice should be added once a year or every 30,000 miles, whichever comes first, in order to maintain proper performance. When using Purple Ice in a cooling system running straight water, Purple Ice should be added once a year or every 15,000 miles, whichever comes first.

Will adding too much Purple Ice harm my cooling system?

No. A higher concentration of Purple Ice than recommended won’t offer any additional cooling benefit nor will it have any adverse effects on the engine or cooling system.

Can Purple Ice be used in diesel engines?

Yes. Purple Ice may be used in diesel engines for improved heat transfer as well as reduced cavitation.

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Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.

Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.

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Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.
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Price-22% $12.40
List: $15.99		$19.95$12.97-5% $20.99
List: $21.99		-9% $25.16
List: $27.78		$13.13
Delivery
Get it as soon as Thursday, May 16
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Get it as soon as Thursday, May 16
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Customer Ratings
4.64.6 out of 5 stars1,624
4.74.7 out of 5 stars1,336
4.64.6 out of 5 stars2,345
4.84.8 out of 5 stars1,542
4.84.8 out of 5 stars415
4.54.5 out of 5 stars431
Easy to use
—
4.7
4.7
4.9
—
4.7
Value for money
—
4.6
4.4
4.7
—
4.7
Mileage
—
4.5
4.3
4.8
—
4.5
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Customer reviews

4.6 out of 5 stars
4.6 out of 5
1,624 global ratings

Customers say

Customers are positive about the quality of the auto accessory. They say it works well and is effective at keeping their vehicles cool. They also appreciate the value for money, saying it's the best on the market. However, some customers have reported issues with leakage.

AI-generated from the text of customer reviews

90 customers mention69 positive21 negative

Customers like the quality of the auto accessory. They mention it's effective, works well, and easy to use. Some say that the product is well-known and keeps the engine cooler.

"Well known quality product, but poorly packaged for shipping...." Read more

"...I did track days in 100F+ and never had heating problems. The bike was fine and had no signs of any problems...." Read more

"...difference in dropping the temp.. my only complaint is that it actually works well and it takes longer to heat up!" Read more

"...drive at the end and when she picked me up for dinner, the fans weren't even running. This is in NC in July. It was 96 degrees...." Read more

86 customers mention66 positive20 negative

Customers like the temperature of the auto accessory. They say it drops the coolant temps, helps to keep their car cool, and even keeps their oil temp down by 8 degrees. They also say it allows for better heat transfer and disperses that increased heat in some way. Customers say it makes an instant difference in dropping the temperature and works great on both cars.

"...automatic trans fluid and it shifts way more smoothly and the temp dropped a little...." Read more

"...Temps are stable. My heater is producing 134F heat. I am about 6 weeks in with this product in my coolant...." Read more

"...may still increase.... and this product is able to help disperse that increased heat in some way by its chemical formulation... again, Your..." Read more

"I've used this on several of my vehicles and it does drop the coolant temps!!" Read more

23 customers mention17 positive6 negative

Customers like the value of the auto accessory. They mention it's a good product at a great price, and it'll definitely be worth the purchase. Some say that the price is cheaper than in store.

"...Its worth the extra cash, especially the oil that you can run up to 12000 miles...." Read more

"...I highly recommend this product. It's worth the money." Read more

"...I don't know. This might have been a waste of money. I won't buy it again. I do like Royal Purple products, but this one gives me pause." Read more

"...I'll take that for a simple drop in reasonably priced additive." Read more

4 customers mention4 positive0 negative

Customers are happy with the anti-corrosion elements of the auto accessory.

"...water pump (though most pumps are sealed now) and its anti-corrosion elements are beneficial...." Read more

"I'm glad it's a corrosion inhibitor. Now I can't say it does nothing." Read more

"...Highly recommended to me by close friends on its lubricating, anti-corrosion and wetting properties.So far no issues..." Read more

"...It also is anti corrosive and for the price a no brainer" Read more

4 customers mention4 positive0 negative

Customers are satisfied with the longevity of the auto accessory. They mention that it will prolong the life of their car, keeping the system clean and extending water pump life.

"...in terms of reducing hot spots, keeping the system clean and extending water pump life, as my Escalade enters it's "golden years"." Read more

"...The real advantage of this product is it will prolong the life of your car." Read more

"...A little more expensive, but I find better quality, and longer lasting between oil changes." Read more

"Item is great waiting for second use." Read more

7 customers mention0 positive7 negative

Customers are dissatisfied with the leakage of the auto accessory. They mention that the product broke and leaked everywhere, the aftermarket radiator sprung a pinhole leak, and some bottles spill on transport. Some customers also report that the bottle was wet and a torrent of white chunks came pouring out when draining the system.

"...in box to cushion bottle and about an ounce of product had leaked inside plastic wrap, bottle was wet." Read more

"...the bike to go riding the next weekend and i notice a small amount of water under my bike and that all my hoses are rock hard and there is a ton of..." Read more

"Product was broke and leaked everywhere. Packed on top and bottom of 3 gallons of oil." Read more

"...but a few mo the later my expensive aftermarket radiator sprung a pinhole leak. A few hours later the leak had stopped, hadn't seen it since...." Read more

Ruined my motorcycle
1 Star
Ruined my motorcycle
Let me tell you a story of how this stuff completely destroyed my motorcycle. I had been using Factory coolant in my 2009 Suzuki Gsx-R 750 since i bought it. I never had any problem. I did track days in 100F+ and never had heating problems. The bike was fine and had no signs of any problems. I then was told by one of the track day vendors that i can't run antifreeze in my bike, because it super slippery if you crash and it gets on the track. So i research on what i need to do and i had two options Royal Purple-Purple Ice+ or W.W. My local parts store had Purple ice so i decided to go with that. I followed the instructions on the bottle. "Bottled, Filtered drinking water is recommended." This should have been a huge red flag. so i went and got a bag of 12, 12oz bottles to fill my coolant system. I did the "2oz per quart of coolant with straight water." Fast forward to after my next track day. The day went fine no cooling problems. I take the bike home and off the truck and park it in my garage for 5 days until the next weekend. I start to put all my street stuff back on the bike to go riding the next weekend and i notice a small amount of water under my bike and that all my hoses are rock hard and there is a ton of pressure in the coolant system. figuring that is REALLY odd after 5 days. I relieved the pressure out of the system and called a freind that owns a motorcycle shop. he advised to check the thermostat to see if it stuck closed with something clogging the little check valve. Upon draining the system a torrent of white chunks came pouring out. Pictures included. After putting 100% Distilled water in the bike and bleed the system and warmed the bike up to put some pressure in the system, Water started to leak out of my radiator. I removed the Factory radiator and had it pressure tested. This stuff eat away the radiator, there were hundreds of little pin holes in the radiator air bubbles were coming out of the fins. and one thing i found out is that factory radiators for motorcycles are NOT cheap, 700$+. So i was forced to get a cheap reman radiator that doesn't flow as well. after about 5 months and 4 more track days i can tell you this stuff has lined my engine with whatever this white stuff is and i have been having cooling problems since. if its anywhere in the 90F+ after i get back to the pits my bike is boiling over. Even with it running the bike doesn't drop below 230F+ so when i cut the flow off it spikes to over 250 and the distilled water boils out and i have to add water. So to date i have flushed my bike well over 20 times with nothing but distilled water and i still have problems and i still get white stuff coming out. I was planning on doing a race season but i guess that's out on this bike. THANKS ROYAL PURPLE for potentially costing me thousands of dollars to rebuild or buy a new motor!The pictures are from the first 10 or so flushes.
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Top reviews from the United States

Andrew J Corona
5.0 out of 5 stars It works and great price
Reviewed in the United States on April 12, 2024
Size: 12 Fl Oz (Pack of 1)Verified Purchase
It made my 2018 chrysler 300 run 10 degrees cooler with 50% water and 50% coolant. I have a digital coolant gauge so, I know for a fact. It used to run at 199-200 and now it runs at 189-190 when cruising.
One person found this helpful
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MC Ronson
5.0 out of 5 stars Results: Toyota & Chevy
Reviewed in the United States on November 30, 2023
Size: 12 Fl Oz (Pack of 1)Verified Purchase
There was no apparent change in operating temps for the wife's 2004 Toyota Sequoia (4.7L), but then again, Toyota Gauges (at least in the Sequoia's) were and probably remain notorious for being 'wonky',
i.e. her oil gauge typically reads low, until it doesn't, then it does again.

Her analog gas gauge is also a delight, usually showing the gas level with reasonable accuracy, but other times appearing to be empty, complete with the illuminated idiot light, when you know darn well it isn't.

With such suspect gauges, the heat reduction on her vehicle is inconclusive. I'd have needed a thermal reader with her vehicle to compare the before and after.

Even so, the lubricants in the RP Ice provides lubrication for the thermostat and water pump (though most pumps are sealed now) and its anti-corrosion elements are beneficial.

I had added distilled water to the 50/50 mix radiator fluid for the ideal ratio for better performance of the RP Ice additive in both vehicles that still maintains appropriate freezing protection for our location.

I've read that using purified water in radiators is better than using distilled. It may be that distilled water pulls minerals into the radiator fluid? I used what I had on hand (distilled).

However, in my 1992 Chevy Cube Van (350 CID/ 5.7L) the analog gas gauge indicated an obvious drop of at least a 10° F from it's previous normal operating temperature, maybe a tad more, registering the same obvious temperature drop when left to idle up to operating temperature a second time.
One person found this helpful
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Mr. Perry
5.0 out of 5 stars This stuff works.
Reviewed in the United States on November 10, 2023
Size: 12 Fl Oz (Pack of 1)Verified Purchase
I have an older vehicle which has had extensive cooling system repairs done (approx 90 percent of the system has been rebuilt including hoses). I have a 170 degree thermostat installed.

Prior to using this product my van would reach close to 200 degrees, per the obd reader and was unstable. I live in Florida.

At this time, after 3 hours of driving I am only reaching 181-186F. The overflow tank is expanding more than it did prior to installing. Temps are stable. My heater is producing 134F heat. I am about 6 weeks in with this product in my coolant.

I highly recommend this product. It's worth the money.
4 people found this helpful
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Ed
4.0 out of 5 stars Works
Reviewed in the United States on January 10, 2024
Size: 12 Fl Oz (Pack of 1)Verified Purchase
I use this in a MGB. It reduces engine temp by 10 - 12 degrees on very hot days.
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KMac
5.0 out of 5 stars Sorry for the long writeup, but the product works
Reviewed in the United States on July 26, 2020
Size: 12 Fl Oz (Pack of 1)Verified Purchase
I still like to drive one of my older cars regularly. Over the years it appears that there's some build-up that just will not flush out of the engine. This only affects the car when the Houston temperatures get into the mid to upper nineties. The car does not overheat but it runs hotter than I would like.

I tried the purple ice, Which coincidentally I installed during a multi day period Of nearly 100 deg. temperature days. To my amazement my engine temperatures were lower (even when compared to the gauge reading during the lower 90 deg. temperature days).

There are people out there who believe that your car engine thermostat will just adjust to compensate for any improvement the product may cause thus rendering purple ice ineffective. However think about this logically, the reason a person would add this is because during periods where your thermostat is completely open and is unable to provide any more cooling your temperature may still increase.... and this product is able to help disperse that increased heat in some way by its chemical formulation... again, Your thermostat is fully open and your engine temperatures continue to climb non the less....adding this can help

Another way that this product indicates its effectiveness is that my engine takes longer to reach operating temperature by about triple the time. So this product is absolutely doing something to help the coolant release heat. And for those that think that there is a problem with driving your car for 15 to 20 extra minutes before it reaches operating temperature asked them to phone their friends in Wisconsin Minnesota Alaska in other extreme cold States and they will find that this is normal for a few months a year with no adverse effect on your car engine reliability....

Sorry for being so long.. this product works
33 people found this helpful
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Thomas m whalen
5.0 out of 5 stars Works!!
Reviewed in the United States on December 26, 2023
Size: 12 Fl Oz (Pack of 1)Verified Purchase
I've used this on several of my vehicles and it does drop the coolant temps!!
One person found this helpful
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vEEEtore.
5.0 out of 5 stars it works
Reviewed in the United States on November 22, 2020
Size: 12 Fl Oz (Pack of 1)Verified Purchase
I believe this stuff works. I have an early Ford model T 1915, the early ones had a small radiators which Ford addressed later. I back flushed the Radiator with water then drained it and put radiator cleaner in it and ran it until it got very hot. I drained, filled with water and ran it until it got hot. took about the same time to get hot. I put another brand of radiator cleaner in, ran it until it got hot. drained, back flushed it again. I filled the radiator 3 gal, distilled water, put 2 bottles 2 oz per gal of Purple Ice in. Started it up and was pleasantly surprised. It took much longer to reach operating temp. It did get hot after a long while but never boiled over, Interesting the exhaust was much cooler. I made an exhaust pipe 2"PVC reaching under the garage door. so not to fixate myself , before the PVC got so hot it deformed in the no hub coupling connecting to the exhaust pipe, now I could put my hand on the PVC it was just very warm, not hot. Next summer will be the test.
7 people found this helpful
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Emmett
3.0 out of 5 stars Did not cool it down
Reviewed in the United States on May 1, 2024
Size: 12 Fl Oz (Pack of 1)Verified Purchase
I've used this and I used the Redline Water Wetter. I saw a good bit of cooling with the Redline but didn't see any with the RP Ice. I'm a big fan of Royal Purple products but I got to go with the Redline Water Wetter on this one.
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Top reviews from other countries

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Bedevere
5.0 out of 5 stars Brings working temperature of cold block up faster
Reviewed in Canada on January 2, 2024
Size: 12 Fl Oz (Pack of 1)Verified Purchase
Used on 2013 Jetta Hybrid, coolant picks up heat much quicker, compared to factory 50/50 mix.

Because Royal Purple ICE makes your coolant to absorb heat more easily, annual (yearly) coolant flush is recommended.

Use as directed.
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✖️Mattia
2.0 out of 5 stars Attenti
Reviewed in Italy on July 16, 2023
Size: 12 Fl Oz (Pack of 1)Verified Purchase
Credo proprio che sia uno specchietto per le allodole, da Royal Purple mi aspettavo certezze! Semplice acqua di colore viola. Arrivato senza alcun sigillo. 35€ sono decisamente troppi. Restituito senza pensarci
One person found this helpful
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Luis L.
5.0 out of 5 stars buena marca
Reviewed in Mexico on January 12, 2021
Size: 12 Fl Oz (Pack of 1)Verified Purchase
buen producto confiable, recomendado y a buen precio.
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guillon ludovic
5.0 out of 5 stars Parfait
Reviewed in France on August 28, 2021
Size: 12 Fl Oz (Pack of 1)Verified Purchase
Testé sur un vieux 4x4, et obtenu une petite baisse de 5degres.
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Jorge Costa
5.0 out of 5 stars Thrust name
Reviewed in the United Kingdom on May 12, 2021
Size: 12 Fl Oz (Pack of 1)Verified Purchase
Amazing product, had to try but it works, superb quality, does what it says.tried on my nissan juke 1.6 turbo and cools much better dropping the temperature much more quickly than just normal coolant.
Temperature between 84 degrees and 87 degrees.
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