My experience with the #95, is that it doesn't really add enough "tin" to
the pipe to be useful, and that it often leaves black burnt residue within
the joint, that sometimes is continuous all the way through the joint
causing a leak sometimes 6 or more weeks after completing the job.
Personally, with either standard propane or MAPS gas, good old-fashioned
solder paste still gives me the best joint when using either the easy to
work with 50/50 lead/tin solder on non-drinking lines or with new difficult
to work with lead-free solders.

"blueman" wrote in message
...
I noticed at Home Depot that they sell an Oatey branded "No. 95
Tinning Flux" that supposedly "pre-tins" the pips and prevents the
flux from burning out or the pipe from oxidizing ("turning
green"). They say it is especially good on larger pipes.

Has anybody had any epxerience using such tinning fluxes vs. a
standard flux like the Oatey #5 Past flux?

- Does it really work better on larger pipes?
- What about on smaller pipes?
- Any disadvantages (other than higher price) to using it all the
time?