Doin' the Windmill? Temp. Gauge Tricks

[GaryU.]

My temperature gauge in my '38 was a reproduction that like typical had lost all red coloration so was completely clear and difficult to read at all. On Friday I came across a set of '38 Deluxe gauges and speedo for sale at local spring swap and for once the capillary tube and bulb was not damaged or cut off. However because of probably laying around in a pile for who knows how long the red liquid was not separate from any air inside the gauge. From a post long ago I tried two remedies and success! First I set the bulb in a pan of boiling water followed by quenching in ice water. This helped some but not completely so followed that up with the boiling water and then the crazy part. Being very careful and slow I spun the bulb overhead vertically and just like that , instead separation and proper operation. Checked with boiling water and quenching a few more times and it looks good to go. Pictures at 160 degrees and it goes as high as it should at boil.