[Marshall V. Daut]

By the way, I suspect the reason this stuff is not generally available at your local auto parts store is because of its relatively short shelf life. It tends to harden inside the bottle if not used in a month or so. I found this out the hard (and expensive!) way when I went to use a new bottle I had squirreled away a year after purchasing it. Even though the seal was still in place, the contents had turned hard as a rock. So, don't order a half dozen bottles at a time with the intention of saving and using them as needed over time. Order only what you will immediately use.
Marshall