Temperature Gauge - 35-39

[Bob39]

Have a 39 temp gauge that works perfectly. Trouble is the liquid is clear and almost impossible to see at a quick glance.
Since these are closed capillary tubes, is it possible to somehow inject dye?
By the same token, should it read too high or low, can liquid be added?
Lastly, what was the exact liquid used?
Many thanks and Happy New Year.
Bob

 

[Charlie Stephens]

Have a 39 temp gauge that works perfectly. Trouble is the liquid is clear and almost impossible to see at a quick glance.
Since these are closed capillary tubes, is it possible to somehow inject dye?
By the same token, should it read too high or low, can liquid be added?
Lastly, what was the exact liquid used?
Many thanks and Happy New Year.
Bob

Bob,
You posted in a forum intended for questions "To The Editors". You would be more likely to get an answer in the general forum, https://www.fordbarn.com/forum/forumdisplay.php?f=4

Charlie Stephens

 

[Bob39]

Thanks for your reply and guidance.
This is my first and hopefully I will get it right soon!
Regards