Why? I doubt if they would do much, if any, good if the valve was leaking.
They get in the way when checking air pressure - if they weren't there I'd
likely check more often. All I can think of is to keep dirt out of valves?
Valve caps on car A./C? I've never noticed them. Where are they? On the
A/C itself? Where 'freon' is added? I don't even know where mine is.
Never had to mess with it. (Only have owned the car a few months.)
But the primary purpose they serve is in finding lost socks.
When you lose one sock, that sock goes to a special place.
The same place lost valve caps go.
Apologies to those who are not Ren and Stimpy fans.
I like the aftermarket ones that can unscrew the core. If they were
cast iron, I could find them with a magnet. If a wheel had 6 valves, I
could balance it by screwing on cast iron valve caps of different weights.
New cars have tire pressure monitor valves. Don't need to check
pressure unless monitor senses it. Put in Nitrogen which is more stable.
Nitrogen filled tire valve caps are green in color. You think keeping
dirt out is unimportant?
caps off, pour some kind of cheap perfume on the valve and then put the
cap on tight.
causes something funny to happen.
Somebody pulled that on me once - told me the best way to pressurize
your tires was to first let some air out. Gave me the nice aroma of
Taboo. Remember that one? Just the thought of Taboo gives me a
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