Might be that you could design a chain that used WD40 as lube :-).

The 91 Chevy S10 I had used ATF in the standard trans, and both of my current 2000+ model year Chevrolet use ATF in the transfer case. ATF is just an upscale 30 weight hydraulic oil actually. Many machine tools use AW32 for a lot of stuff and ATF has been used in a pinch. They also use a lighter oil in ring and pinion rear ends for stuff like qualifying for 3 laps under power. You could probably operate a vehicle strictly on ATF in a pinch, engine, trans, rear end and power steering as long as you did not run 70 mph for hours and hours.

That said as pure errata, I use WD40 as a cheep flushing agent when I'd rather leave a petro film for the next lube. Last winter I did use WD specialist silicone lubricant on FD and RD on my winter bike, just sprayed on and blew off all I could with compressed air, and will this winter too, they work sub freezing, if they wear out after another 1500+ this winter I will replace them. I put pro link on the chain after a wash out, but last winter was old wd40 every few days and a 100 psi blow dry.