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Engine coolant

30K views 9 replies 9 participants last post by  Mr. P  
#1 ·
Is there a recommendation for engine coolant (antifreeze) other than the recommended distilled water? There’s no mention of it in the manual.
 
#4 ·
There are many Anti-freeze brands that meet the Phosphate-based Ethylene glycol coolant for aluminum radiator qualities needed
Preston, Zerex, peak just to name a few. All most all the manufacture's make one that meets the spec's.
I used to buy the 50, 50 mix. Haven't purchased any for my last 4 cars as dealers usually top the Anti-freeze off
for you at time of service.
 
#5 · (Edited)
I agree that the Owners Manual for the 2021 Palisade is sadly lacking any recommendation on branding /terminology on coolant.formulation.
Hyundai manual writing team even missed the chance to market their own OEM brand?
My reservoir was also down to the "L" level after 2600 miles. I do not feel that just adding DI water is a good choice, as that offsets the ratio of 50/50 mixture in the reservoir..
Here is the closest I could find that meets the generic recommendations in the owners manual of "Ethylene Glycol based with PHOAT."
It is definitely not the cheapest coolant out there, but it buys peace of mind.
 
#6 ·
Manual Says - The engine in your vehicle has aluminum engine parts and must be protected by an ethylene-glycol with phosphate based coolant to prevent corrosion and freezing. • Do not use alcohol or methanol coolant or mix them with the specified coolant. I saw the coolant color was pink in my car - https://images.oreillyauto.com/uploads/pdf/ad/SD_672 AFZ Comparison Chart-1.pdf ZAREX ZEREX® Asian Vehicle Antifreeze/Coolant AFZ 675130
 
#8 ·
Anti freeze doesn't evaporate, water does. Adding a small amount of distilled water to top off the reservoir won't hurt. It never hurts to have the coolant freezing protection checked at a service appointment, just ask for it. Repeated frequent loss of coolant suggests a hidden leak if no drips are evident and should be checked with a leak detector dye by a qualified mechanic. After any repair the antifreeze lost must be replaced with the proper type to achieve the correct 50/50 ratio.

As to the addition of methanol, I suspect that the main cause of that error is topping off the coolant reservoir with windshield washer/anti freeze fluid. That might call for a pre mature coolant drain, flush and fill to prevent damage.

Much of the coolant in use by garages now is recycled. That is coolant that has been drained and stored, filtered to remove dissolved metals and other unwanted particulates, acid balanced, a new additive package added to restore lubricity and anti corrosive properties then corrected to 50/50 ratio by adding new product or water as necessary. It is environmentally sound recycled and green but and a big but, it is not factory approved coolant. We used it in my garage, it is great for a 15 year old F-150 but not a newer Asian, European or late model American car especially if there is any possible warranty. For those, at a much greater expense we stocked a case of genuine Toyota brown coolant and GM Delco factory coolant as well as Zerex. With a 100,000 mile warranty, make sure you are getting the proper coolant installed if you need service!