I got mine from Napa yesterday, it was $17.00, it is a quality adapter.
Now I have to find windshield washer fluid on sale!
Thanks Bob[/QUOTE
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The fitting from NAPA is made by Schrader-Bridgeport, and is a quality product, and along with it's main competition, Milton, still produces the majority of it's products in the USA.
As for the W/W fluid, if you live in what is known as an EPA "non attainment area", the fluid is only good to only +20F due to a cap of 8% methanol. Any sold in these areas that has a lower freeze point have other chemicals to prevent freezing; usually glycol, which would not be bad, except I have to sometimes throw out some half full jugs of W/W fluid because they have an algae, or some king of stringy slime growing in it, and has a slightly foul odor. I have also had to remove and dump/rinse my washer tank on one of my trucks for the same reason. It take about 3+ months before the slime forms, and only in jugs that are less than 75% full. I would try to find out where the folks making bio-diesel are getting there methanol from.