Coolant reviews from Reddit
Summary
We analyzed 152 Reddit reviews across 47 subreddits and 63 posts to rank the best Coolant brands recommended by redditors, including communities like r/watercooling, r/hondafit, r/saab, r/Hyundai, r/CNC. Top-rated brands include Prestone (4.0/5), Zerex (4.3/5), Toyota (4.6/5).
Stats
Reviews152
Subreddits47
Posts63
Brands64
Products74
152 reviews from
and
By Brand
/By Product
#1
Prestone
4.0
(14)
"Asian blue. Prestone, napa, whatever."
"Just buy the prestone premix coolant and use it"
"I use Prestone European Vehicle Coolant 50/50 premix, it gets down to -39°C where I live"
"I use Prestone in my cars and bikes as it did the best in some tests I have seen from coolants available in my country."
"Saabs use coolant known as Dexcool. It’s a bs name that GM name with and it just means an OAT coolant."
"I use Prestone "GM Approved DEX-COOL" on my 2004 9-3. Never had any coolant issues other than an occasional "low coolant" warning."
"Dexcool 50/50."
"If possible, use the dexcool version, it's best to keep it the same"
"Temps seem to be the same as oem coolant."
"Stay away from the 'long life' coolant.. get Prestone full strength (green) and distilled water."
#2
Zerex
4.3
(13)
"Go G40. When you swap the core, you'll want to flush the whole coolant loop."
"I've used Zerex G40 since my timing belt/water pump replacement."
"I use Zerex."
"Zerex asian pink, been using it for 20 years in my hyundai / kias"
"For aftermarket I stick with Zerex."
"I use zerex-go5 which meets the same standards as Mopar hoat."
"OEM or zerex blue are what I use."
"I have used the Zerex blue coolant."
"Zerex makes one that will work."
"I use Zerex G48."
#3
Toyota
4.6
(11)
"Well, in that case, Toyota red. Easy to see level in reservoir."
"Toyota pink don’t use other brands as they have different chemical makeups and you might not be able to get everything out so when they mix they might create a gasket eating mixture."
"Pink Toyota. even recommended for no toyota brands."
"My friend is a former mechanic and he recommended this over Honda's."
"Toyota red or equivalent."
"I use Toyota Super Long Life Coolant, the pink one."
"Just use toyota long life coolant."
"I'm using the pink colored Toyota ones. My former foreman said it's a good coolant so that's why I tried it."
"Now i just topup using toyota red coolant."
"Use either of the following: “Toyota Super Long Life Coolant” Or similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite and non-borate coolant with long-life hybrid organic acid t"
#4
Peak
4.0
(11)
"I use regular peak coolant (prediluted). it works fine."
"Get a premix of 50/50 from the Asian Pink formula from a local car parts store."
"PEAK Pink - it’s made by GM it’s still a Saab. Mines ran better ever since I switched it to pink"
"I use Peak brand pink coolant also , it’s never had an issue."
"I use regular peak coolant, works fine"
"It's pink and recommended for hyundai and Genesis"
"I used the Peak asian vehicle for my timing belt job."
"I have been using peak blue 50/50 euro coolant"
"For coolant, PEAK Asian Vehicles Red/Pink."
"For coolant , I'd use the same color color by PEAK."
#5
Honda
5.0
(7)
"Honda coolant."
"You want the very best you gotta go Honda blue."
"Nothin better than that OEM Honda"
"Always use the blue Honda OEM coolant."
"You can use OEM from Honda on Amazon."
"Use OEM Honda fluids for coolant and transmission."
"Honda brand OEM. It should be good for ten years before you need to change it."
#6
DP Ultra
5.0
(6)
"For a propper build, get propper dp ultra and edpm softtubeband dont cheap out on fluid."
"5-6 years of using clear dp-ultra nothing changed on it."
"Stick to DP Ultra... highest rate of success."
"Hands down, just DP-Ultra in any color avaliable, as maintainance free solution."
"I’ve been running DP Ultra Clear for t"
"I would go with the DP ultra clear. In fact I did it."
#7
OEM
4.7
(6)
"Nothing but oem duuh"
"I got the OEM from Amazon, sealed. Works great."
"Why not just use OEM? It’s not much more expensive (and usually the same price) and it’s not changed that often."
"If you want the best just buy the oem stuff."
"Coolant: OEM is fine"
"You might as well use OEM coolant just to be safe imo."
#8
Engine Ice
4.0
(6)
"I like engine ice because it's nontoxic and biodegradable."
"It’s a high quality coolant that cools the bike a bit better in the heat than oem. It’s the motorcycle version."
"Engine ice is what I use"
"New Hoses, Engine Ice, with a 2.0 Graves Radiator cap 🥶"
"But engine ice if it’s a track bike or you want the best performance in high ambient temperatures."
"Engine ice."
#9
Koolance
4.8
(4)
"I’ve been using koolance 702 clear for years without problems."
"Koolance 702 or 705"
"Koolance LIQ-702 💪"
"This or Koolance 702. These are the only two options."
#10
Mopar
4.5
(4)
"I’d go with the mopar stuff your summy deserves it."
"The 10 year from mopar , get at dealership."
"I'd buy Mopar coolant to top it off."
"Mopar 5 year HOAT."
#11
Castrol
4.3
(3)
"Castrol hysol mb 50 is my personal favorite"
"I dont think you can beat hysol MB50."
"Castrol semi synthetic, I think it is 9940?"
#12
EK
3.0
(4)
"I've been using EK Mystic Fog for two years with no problems whatsoever."
"I've used mystic fog with no problems. The effects lasted for up to a year but started noticeably fading after about 6 months."
"EK fluids have done nothing but disappoint me. The only “decent” EK fluid I have ran is their mystic fog but that was a beta sample."
"Mystic Fog might actually be worse than solid-colored coolants. Leaves particles in the system."
#13
Blaser
4.0
(3)
"Blaser makes a clear coolant that is pretty good too. Much healthier than typical synthetics."
"I actually kind of love this coolant. excellent lubricity and visibility."
"My favorite would be Blauser."
#14
Aquacomputer
5.0
(2)
"+1 for aquacomputer."
"Aquacomputer and only aquacomputer. Without colour ofc!"
#15
Mishimoto
5.0
(2)
"The best warranty and amazing fit you can't go wrong with the Mish"
"I've ran their radiator for years on the track with no problems."
#16
Glysantin
4.5
(2)
"Glysantin G48 and distilled water. In 18+ years I've never had a problem with clogging or deposits."
"Glysantin G48 or compatible. The turquoise stuff."
#17
Motorcraft
4.5
(2)
"You want Ford MotorCraft Yellow. or Yellow P-OAT coolant."
"Motorcraft is preferred for Ford"
#18
VW
4.5
(2)
"VW coolant has a way, way, way longer lifetime and doesn't corrode everything like that cheap prestone coolant."
"I buy the 50/50 premixed VW coolant from Canadian Tire."
#19
Basic Green
4.0
(2)
"Basic Green Coolant, make sure you burb it."
"Basic old school IAT Green Coolant is what it was designed for and what I run in mine."
#20
Super Tech
4.0
(2)
"Super Tech Blue is totally fine"
"They're great and cheap. $15 for 4 litres is all you need for a small car"
#21
BMW
4.0
(2)
"Just use the BMW one, it's the same price as everything else."
"BMW coolant. It’s blue."
#22
Primochill
3.0
(2)
"I've been using primochill lrt tubing for the past 15 years."
"Mystic Fog is most likely going to be a revisit of Primochil Vue for you my friend. Only use opaque coolant if you are onboard for the extra maintenance."
#23
GoChillers
5.0
(1)
"I just finished a year long run of GoChillers yellow opaque... It's amazing!"
#24
Amsoil
5.0
(1)
"I've run Amsoil Heavy Duty Antifreeze & Coolant in my 2003 Disco for 9+ years. It works very well."
#25
PC Water Cooling Products
5.0
(1)
"One bottle of G48 lasted me almost 18 years."
#26
VW/Audi
5.0
(1)
"It should use G12evo, not G13. I got a gallon of VW/Audi G12evo from ECSTuning."
#27
GM
5.0
(1)
"Use an OAT (organic‑acid‑technology) “long‑life” coolant that explicitly meets GM 6277M. That is the coolant Saab specified for the B205 in your 2001 9‑3, and it is still the safest choice today."
#28
VW Dealer
5.0
(1)
"I made sure to only buy my coolant directly from the dealer. This is one fluid I want to be certain of."
#29
Distilled Water
5.0
(1)
"I use plain old distilled water. Multiple years without maintenance."
#30
Zerox
5.0
(1)
"I would use Zerox G30"
#31
Go Chiller
5.0
(1)
"I run the graphene stuff from go chiller diluted with deionized water and I’ve been pleased with it."
#32
Peak OET
5.0
(1)
"I've used Peak OET Blue in both Hondas and a Toyota for years."
#33
HoCut
5.0
(1)
"Best stuff I've ever used."
#34
Ravenol
5.0
(1)
"It’s amine and silicate free and meets Suzuki LongLife coolant standards."
#35
Penrite
5.0
(1)
"Penrite Green Coolant :)"
#36
XSPC
4.0
(1)
"I had XSPC Pure in my loop for 2 years with no issues and will be using it in my new one."
#37
Pentosin
4.0
(1)
"Advanced Auto carries Pentosin Pentecost with the pink cap."
#38
Mayhems, XSPC, Primochill
4.0
(1)
"Mayhems Pastel was the best I've tried but they seem to have discontinued it. XSPC EC6 is good stuff but not available in yellow. Primochill is the King of Color - they've got opaque in no less than 24 colors."
#39
OE
4.0
(1)
"I've used OE G48 and HT12 coolant as well. No issues. Arguably better than PC water cooling specific products."
#40
EK, Bykski
4.0
(1)
"I was using EK cryofuel but have been using Bykski pastel orange and already planning a build with their green next. I have been pleased, they have a yellow."
#41
Bykski
4.0
(1)
"Bykski clear with distilled"
#42
GM Coolant
4.0
(1)
"I just use the O’Reilly’s GM coolant and it’s works no problem."
#43
Gates, Dayco, Motorcraft
4.0
(1)
"Gates, Dayco or Motorcraft."
#44
Mayhems, PrimoChill
4.0
(1)
"I used Mayhems for years with no issues. They don’t make the white anymore so I just switched to PrimoChill."
#45
EPDM
4.0
(1)
"I used EPDM from an industrial supplier for super cheap and haven’t had a problem with it getting hard."
#46
Peak, Zerex/Valvoline, OEM/Recochem, Napa, Supertech, Pentosin, Aisin, BeckArnley
4.0
(1)
"Best coolant is fresh coolant. Whether you use Peak, Zerex/Valvoline, OEM/Recochem, Napa, Supertech, Pentosin, Aisin, BeckArnley.... won't make a difference."
#47
DP Ultra, XSPC
4.0
(1)
"DP Ultra or XSPC are my go tos."
#48
Ecocool
4.0
(1)
#49
Triumph
4.0
(1)
"Triumph recommends its own coolant."
#50
Repsol
4.0
(1)
"I have been using organic antifreeze from Repsol in a diluted solution, for 5 years and so far has been doing great."
#51
HOCUT
4.0
(1)
"Best I have found is HOCUT 795B, good for most (all?) metals."
#52
Zic
4.0
(1)
"You can try pre-mixed coolants from Zic or Aisin."
#53
Qualichem
4.0
(1)
"I like Qualichem 251c but I mostly do aluminum."
#54
Dex-Cool
4.0
(1)
"Dexcool. It's pink."
#55
Motul
4.0
(1)
"Bought 1 ltr. of Motul Motocool Expert Hybrid Tech"
#56
FROSTOX
4.0
(1)
"My 2024 manual says 'FROSTOX HT-12 Coolant'."
#57
PEAK
4.0
(1)
"Run a good heavy duty diesel engine P-OAT rated Extended life coolant such as PEAK final charge pro series"
#58
Maxima
4.0
(1)
"Maxima coolanol will do just fine."
#59
Supertech
4.0
(1)
"I'd get the Supertech Asian Blue for like $17.50 and not worry about it."
#60
Cryfofuel, DP Ultra
3.0
(1)
"Cryfofuel tended to coat people's loops and caused gunking issues. Therefore, I went straight to dp ultra and it's been great for the 3 months."
#61
Alphacool
3.0
(1)
"I’m using Alphacool’s coolant for now. Considering swapping it out for DP Ultra though."
#62
Generic Coolant
3.0
(1)
"Any coolant in the color you need is fine."
#63
Biltema
3.0
(1)
"I've been thinking about changing brand as it's gotten worse these last few years."
#64
Petronas
3.0
(1)
"Coolant Petronas. Small bottle costs you rm21"
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