I have not had this issue when using it on my gas line for my hot water heater. Hopefully they didn't actually have a gas leak.
I don't think so, it is combinable.
I rather use this product for gas, propane or similar uses. I have never used this product with liquid inside the pipes. I may be wrong but, that’s all I use it for.
Yes it worked for me
Yes this will work for propane, but I always put two wraps of Teflon tape and then some of this on the male side of the pipe.
as soon as you leak test it.
Yes it will work. I used it on my gas supply to a new grill.
I used it on the shower seat and it worked perfect
It does not contain Teflon.
These oil-based sealants slowly oxidize and get pretty stiff, but can be put into use immediately.