Part 1: Workable Theories or Hey... this stuff is kinda slippery
MUL, or specifically Microscopic Ultra Lubricant 1.1B was developed by R&D as a potential fuel additive for the Vulture Corps. It failed in THAT aspect, being a bit unstable at high temperatures, but the techs noted that it could be refined and made VERY slippery. After countless tests (and concussions) and a minor fix to make it less visible (neon green is a bit obvious) MUL was born!

The goal for MUL was to give Troubleshooters a viable tool to lubricate themselves through tight tubes, or to be used in trapping CMTs. After all, what trap doesn't involve a nearly invisible sheet of ultra-slippery liquid?!?

Part 2: Insert Tab A into Slot B
There's really no instructions required. It's über slippery, nearly invisible, and pours like water out of handy-dandy containers provided by R&D! The stuff essentially reduces the friction between any two surfaces to nearly zero (close enough to make little difference) and it lasts for quite a while. Can you even begin to imagine the possibilities for something this fan-freakin-tastic?!?

Part 3: By The Way
Did you notice the "unstable at high temperatures" bit? Did you glance at the warnings on the label? How often does R&D put actual WARNINGS on labels?!? Well, probably never, so feel free to not have them. There are, of course, some interesting side notes to the whole MUL thing:

• It is... VERY unstable at high temperatures. Explosively so. MUL will burn for a few seconds and then go up like alcohol. WOOOSH!
• It's toxic. Very toxic if ingested, slightly toxic if you wallow around in it for any long amount of time. Like if you're in a pool of it and you're falling down like all those cartoons with the guy on the ice with no skates. Plus the stuff has the viscosity of water, so it gets into clothing and boots... Anyway, after a while the hapless victim will start to hallucinate or babble or use his mutant powers uncontrollably. Whatever works at the moment. The hallucinations can be quite vivid and somewhat scary. Feel free to sugguest that the troubleshooter fire his energy weapon wildly at the attacking vision while standing in a puddle of explosive chemicals...
• It wouldn't do to have this stuff get into Alpha Complex's drinking water... it'd certainly thin out quite a bit... maybe it wouldn't be toxic to ingest with a lot of water, it would just produce hallucinations or something. See above.
• It's slightly corrosive. It's not very powerful, so metal and most hard plastics and glass (and the like) are fine, but it'll really start to do a number on fabrics. This could be a problem or it could just get embarrassing. Plus it'll make it's way to skin sooner or later.