Cold January reached -24 F. My radiator turned slush ice, last flush 6,000 miles back, 1 year ago. Should have done alright, but it looked like brown slime. No ability to even read the glycol in a clear site gauge. 2 day potent anti rust wash, I was fully cleaned and rinsed. In goes new Supertech, cut 50% distilled water. I run engine, re top off. Then test, get + 6 F. Not happy. Check 2 new gallon concentrate jugs, both about same result undiluted. After calling Walmart corporate, then visiting store, getting refunded and hunting down Prestone after about 4 tries, I am ready to swap fluid again. The Prestone does far better, about -20F at 50% dilute.
I hunt down a contact at Peak after reading on here where it appears to be the same supplier as Supertech. They reply on the + 6 F and claim that is what their product tests at undiluted. They don't address why the color was totally clear, zero hint of yellow or green. I think I got 2 gallons 30 days apart from a faulty quality control issue.
Chime in, could use some feedback. I have a bad radiator, the freeze busted a plastic fitting, so this task drags on and on..
I hunt down a contact at Peak after reading on here where it appears to be the same supplier as Supertech. They reply on the + 6 F and claim that is what their product tests at undiluted. They don't address why the color was totally clear, zero hint of yellow or green. I think I got 2 gallons 30 days apart from a faulty quality control issue.
Chime in, could use some feedback. I have a bad radiator, the freeze busted a plastic fitting, so this task drags on and on..