I can not say that its good or bad, but I can only tell you a little trick, one that you might not need as it is colder where you are, but here in FL its impossible to to find anything below 0?F Mixtures.
I did find
Peak Rain Off -25
It is <30% Meth according to the
MSDS Sheet
The trick is that if your local store does not stock it you can pre-paid for one to be delivered to your local store and Pep-Boys Sends a case for Stock (6) so you do not have to pay shipping, and you have a ready supply available.
To the I mix 1/2 Gallon Peak -25 with 1/2 Gallon VP M1 99.9% Meth Resulting in ~70% Mix.