my teachers always said the only dumb question is the one never asked. anyways, on my exterior fuel pressure gauge, the mystery fluid (water and coolant?) is low in the face of the gauge which is annoying me, is that what the fluid is and can i top it off through the vent on top? its an AutoMeter if that helps.

 

I am confused by this question.... Why would you put water into your fuel pressure gauge?

Being on the outside of the vehicle it is condensation. They only way to get rid of it is to let it dry then seal the gauge so no more moisture can get in. Maybe the gauge was not intended to be outside the truck. WHo did the work on your truck, maybe they know the model of the gauge, you could then find out if it is recommended if it should be outside or not.

Edit.... Seeing you are in Ohio, if you drive your truck daily I would say give up on keeping it outside your truck and keeping the moisture out of it. The cold, then warm, rain and snow will find its way in.

 

I think he's saying its a liquid filled gauge...and the water level in the gauge is gettin low. I'm sure water and antifreeze will not hurt it. Just turn it a little green...Try 90% alcohol. Its clear, and you can buy it at CVS. Its also what they use to put in thermometers cause it would not freeze.

 

Not sure if its the same stuff but the PSI gauges we use at work have some type of clear oil. Not sure what type it is but I will try to find out. But when the gauges leak, there is no doubt it is some sort of oil so maybe its different stuff than what your gauge has.

 

i've searched everywhere and cant seem to find the WOT fuel pressure for the stock 5.7 hemi (2004 Ram) if any one knows that would be great!

 

Ive got a ton of liquid filled 160PSI gauges if anyone is interested.