Jig-a-loo is BAD for cubes! The Jig-a-loo MSDS - Material Safety Data Sheet - shows it contains 30-60% Methylene Chloride - a plastic SOLVENT, and 10-30% Perchloroethane - dry cleaning fluid! Both of these will soften or even weld your cube into a solid block. There's a YouTube video of someone evaluating Jig-a-loo on some Dian-Sheng cubes and he does just that, he fuses one cube solid. BTW the Jig-a-loo MSDS does NOT list any kind of silicone, contradicting mfr's claim that it's silicone-based. I would be very wary of this product.
If you're not sure about a lube, find its MSDS and figure out whats in it.
That said, here's my thoughts on lube...
I have two original Hungarian cubes that I bought in Germany in the 80s and lubed with vaseline - they're still fine, no deterioration, no break-down. But vaseline is gunky and attracts dirt & grit; so I cleaned 'em up and switched to silicone.
The essential ingredient is Silicone oil, or Siloxane - CAS# 63148-62-9.
CAS stands for Chemical Abstracts Service. Every known chemical ingredient - including water - has a registered CAS# which is listed on a product's MSDS, and just about every MSDS is available on-line. Most mfr's have a PDF MSDS right on the product's web-page.
Silicone Aerosol Sprays...
No matter the brand - CRC, Pyroil, GE, ... - ALL silicone sprays are about 80% Heptane but only 8% silicone. Heptane is more commonly known as white-gas, Coleman fuel, or zero-octane gasoline - an effective solvent/lube for a gumed-up lock or throttle linkage, but probably not something you would want to spray into your cube. And since the standard aerosol propellant is propane, silicone sprays are EXTREMELY flammable! Isn't it nice to know that a 10oz can of silicone spray contains 8oz of gasoline but less than an ounce of silicone? That's about $30 per gallon of low-grade gas. If you use a spray - just do one quick squirt at a time and make sure the Hep completely evaporates before you put the cube down.
My preference...
I lube my cubes with two water-based silicone protectants: ArmorAll Original Protectant or STP Son-of-a-gun - both work equally well. They contain 15-20% Silicone oil in a water-based emulsion, plus a bit of UV blocker. I've used these to render even hopelessly tight Winning-Moves cubes into nearly speedable instruments or maybe good training cubes. I apply lightly to the interior of the cube with a #4 artist's brush. These two lubes are good, cheap, intended for plastics, won't fuse your cube, and won't blow up your house....WaW...Petrus rocks!
You don't solve the cube - you solve yourself around the cube.
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(We've only had comments based on experiences so far, this is probably the first comment based entirely on technical knowledge, at least it's the first I've come across.)
I got it for 5 and 9 for shipping. D:
