I made the mistake of leaving my 11 year old, $200 Motion Pro digital tire gauge in my trailer (in enclosed storage). I guess it got below freezing because it puked out some fluid and no longer works. I loved that damn gauge. I have one of the newer ones too, but it’s just not the same.
You can buy just the gauge and replace it. Winter's is popular in the commercial world. I have the same one, I believe I got it at FW Webb. Great gauge. EDIT: I see Winters did change to a different model, Mine must be one of the older ones too EDIT EDIT: I've been using this one alot lately from Longacre, You can fill and adjust pressure in one shot. https://www.longacreracing.com/prod...Filled-2½”-GID-Quick-Fill-Tire-Gauge-0-60-psi
Made a similar mistake years, and years ago. All my precision stuff is stored in a cabinet above my dryer now. Torque wrenches, good air gauges, dial calipers, heavy straight edges, etc. Climate control...
Why would a digital gauge need fluid? I mean, otherwise, doesn't the fluid just dampen the motion of an analog needle? At any rate, they sell blinker fluid at AutoZone, tho' I doubt you'll need a gallon. Sorry for your loss. It sucks losing a calibrated tool.
Fluid? Digital gauges have a transducer. If there was fluid in there, that's probably why it isn't working.
Nothing wrong with pitching that old head and replacing it with a high quality glycerin or non filled mech gauge. These can be found at any supply house and maybe Amazon? Don't be cheap and find a zero to 60 with good accuracy. Then check it against a known control gauge like most tire guys have on their trucks on a regular basis.
