Originally Posted by slackmeyer
It may be that murphy's is fine as a tire mounting lube, but it's not true that vegetable oil based things are not harmful to rubber.
Edit: and second of all, the link you posted doesn't say anything about using murphy's oil soap for mounting tires. It's a link to murphy's tire mounting compound, and the companies have been separate since 1991.
Says right here that the "Murphy's Original Tire Mounting Compound"
is "Thick vegetable based, jelly-like lubricant"
I mount tires almost every day (3 today), and it's Murphy's every time,
for over 15 years. The tires are happy with it, and so am I.