yeah that's the main drawback of having many of these in storage. their quality in humidity diminishes until they are almost unusable, turning into crumbs and powder. they are cheap, but how long to use a 12-pack, or even just 6?
1 cup ammonia, 1 cup rubbing alcohol, 3 cups water, and three drops of Dawn liquid works great. Add a drop or two of blue or green food coloring if preferred.
@@michawolski2584 My dad has used this concoction for decades in a classic 1965 Impala since it was new. No rust, windshield washer system still in pristine condition and the cleanest windshield I've seen anytime it rains/snows.
