Fix-A-Flat stored in the car?

[Moab]

Label says don't store above 120f.

[NT2C]

Label says don't store above 120f.

I kept a can in the back of my utility truck for years.  It's probably been over that temp dozens of times.  The issue though is how much pressure can build up in a can like that.  You'll find similar warnings on most aerosol cans.

[EBuff75]

I had one that leaked out and made a mess in my car years ago, but that had more to do with the cap and spray nozzle coming off, which left the "straw" sticking out of the top.  Eventually, it got banged around enough to leak out.  I don't think it was related to heat at all, just getting thrashed around in a plastic storage bin.

[MacWa77ace]

I had one that leaked out and made a mess in my car years ago, but that had more to do with the cap and spray nozzle coming off, which left the "straw" sticking out of the top.  Eventually, it got banged around enough to leak out.  I don't think it was related to heat at all, just getting thrashed around in a plastic storage bin.

That might actually be it, the rubber in the valve for the nozzle might leak, or what the high temps do to the chemical makeup of the 'stuff' inside.

I can't remember if it was me or someone I new but there was an old can of stuff that wouldn't 'squirt' anymore after being stored in a trunk. The pressure leaked out but not the stuff.

[EBuff75]

I had one that leaked out and made a mess in my car years ago, but that had more to do with the cap and spray nozzle coming off, which left the "straw" sticking out of the top.  Eventually, it got banged around enough to leak out.  I don't think it was related to heat at all, just getting thrashed around in a plastic storage bin.

That might actually be it, the rubber in the valve for the nozzle might leak, or what the high temps do to the chemical makeup of the 'stuff' inside.

I can't remember if it was me or someone I new but there was an old can of stuff that wouldn't 'squirt' anymore after being stored in a trunk. The pressure leaked out but not the stuff.

Whatever it was that I cleaned up was pink/red and wanted to foam (like soap) when I cleaned it up.  From that, I'm guessing it was the contents, not the propellant.  Since then, I've been more careful about how I store things that could end up leaking.  I work from home and my vehicles are both parked in a garage, so they don't get as hot as they used to when they'd be out in parking lots for much of the day.  That should help with longevity.

[MacWa77ace]

@EBuff75 Yes I assumed it was the stuff, the propellant in those cans is usually something that doesn't leave a residue and a lot of times the 'stuff' is in a plastic baggie separating it from the propellant.

My commuter car is in the shade mostly during the day during workdays, but on the weekend its in direct sun all day.
I want to get one of those laser thermometers or weather stations that records min/max temps in my trunk, and see if a cooler will mitigate any wild FL summer temp swings.

[Moab]

So maybe I store it inside some sort of plastic bag?

All of my car preps are in a duffle bag. I could put a couple cans iniisde a heavy ziplock or trash bag, inside the duffle. But my car does get hot.