Propane tank PSI

naturist wrote:
Back in the day we used to use old propane tanks for compressed air at 100-125 psi for tire reinflation after being on the beach or for extra air when running the sports car in autocrosses and hillclimbs. Did it for years. If you put a water separator on the compressor, shouldn't be a problem with internal rust for many years.

Also, used them at tracks when racing motorcycles. Still have and occasionally use the same bottle I used when racing 40 years ago!