Review on Liquid Wrench L666 Lithium Grease by Jeff Wieczorek

Barn doors over 10 years old have been difficult to open and close. I've tried WD40, silicon spray, LPS-1 and LPS-2. Everything only worked for a few weeks. This white lithium spray lube worked wonders. It's only been about a month but now the door rolls sooooo easily when I sprayed it on the top door wheels. I've also tried this on my sectional garage doors and they are much quieter.