However in this case, the 50/50 mix froze at 0 deg f. Tried other anti-freeze and the mix recorded -30 on gage. Same gage that recorded zero with Prestone. You might ask why Prestone is no longer answering calls.
WARNING!! If you add water to PRESTONE PLATINUM CONCENTRATE, be sure and check freeze point before you add to your vehicle.
In my case, it looks like Prestone mistakenly packaged pre-mix in CONCENTRATE containers. Using a Prestone tool, I found the mix had a freeze point of only 0 deg. F. A...
Be sure and test your anti-freeze before you install it.
The two one gallon containers that I purchased from Walmart proved to be unusable after specified amount of water was added. Freeze temperature measured 0 deg. F. A sample was put in 0 deg. freezer and sure enough it froze.
If it...