I also have found that Tri-Flow does not attract dirt and debris as much as WD-40.īeing a designer and producer of Mail Boss high security mailboxes, I deal with people regularly that have lock issues. I find that Tri-Flow stays around longer and keeps these things working better for longer. Whereas for door hinges, locks and other outdoor uses, I think Tri-Flow is far superior. But after I use it, I am sure to get it all off, because dirt has a tendency to stick to it.

I find that WD-40 works best for loosening rusted or seized parts on cars and other equipment.

I have been using both for decades for different purposes. There is a huge debate over the uses of each product and which one is a better lubricant. Then came Tri-Flow, which is a lighter petroleum based lubricant with microscopic particles of teflon in it. As time went on, people discovered that it is also good for loosening parts that are stuck, and as a general household lubricant. The military developed WD-40 in the 1950s to be used as a water displacing substance in order to keep mechanical parts from rusting. We frequently have customers ask us what product to use to lubricate their Mail Boss locks.

Usps dropbox jammed