Re: It's the Internet
@AC who replied to me
I'm up-voting your post as well, because once again you have replied to me like I'm a human and my views matter although you disagree. This is why I generally like the level of commentard on the Register.
It was hit and miss though about up-voting or down-voting you, because surely the one thing we've all learnt from reading the Register is never to trust the vendor's website for information. That's like going to Google to find out if internet advertising is a good thing! It's in WD-40's manufacturer's interest to get people to use WD-40 so by its very nature will be biased. I personally like to refer to the late-great Sheldon Brown's web site https://www.sheldonbrown.com/chains.html
"Lubricants Not to Use!
While it's hard to say which lubricants are best for chains, some lubricants are real no-nos:
Automotive motor oil contains detergent, to wash away combustion products, and is made to be renewed constantly under pressure from the motor's oil pump. I [John Allen] rode once with someone who had used it the day before, and her chain was already squeaking.
"Household" oil, such as 3 in 1, is a vegetable oil and is acidic. It tends to gum up. (It's really bad news inside internal hub gears, too...)
WD-40 and other thin sprays are intended more as solvents than lubricants. They evaporate quickly."
Anyway chain maintenance is almost as dangerous a ground to get into as camera lenses...