Originally Posted By: ddrumman2004
Originally Posted By: HosteenJorje
UPS should be showing up anytime now with three gallons of Zerex Asian Car coolant that I couldn't purchase locally. Don't understand why the local parts houses don't carry it because the local Toyota dealership sells a lot of vehicles.Guess there may not be too many DIYs around here.
I have to ask.....what is the difference between Asian and American engine coolant?
As for the UPS vehicles around here, the ones I see are mostly diesel powered.
This begs the question, what do they do with the package cars once they reach their end of useful life? How long, in years or miles, is the life of one of these vehicles?
Asian-spec coolants are generally non-silicate (not sure about Subaru though), high phosphate, and some organic acid. They highly recommend using low mineral content water to mix (if concentrated) although many like Honda's Type 2 only comes diluted with deionized water. If mixed with a high mineral content water, the phosphate will supposedly bond with the minerals and drop out of suspension. This is the Zerex Asian coolant:
Quote:
http://www.valvoline.com/products/brands/zerex/antifreeze/105
* Silicate Free, Phosphated HOAT Chemistry
Not sure what "American" coolant is these days. I guess it was traditionally silicated coolant like yellow-bottle Prestone or Peak, but increasingly it's organic acid like Dex-Cool or various clones. I don't know if the big makers even sell any of this stuff. Maybe Peak. Probably some generic coolants. It's probably not so bad as long as it's changed every year or two before the silicates gel out. Then again, it's hard to tell what's in most coolant these days. They may just claim that it can mix with anything, and in that case it's probably some Dex-Cool like formula.