No matter what brand of guage you use i would test it next time you change
your oil, test it in boiling water or hot oil at above 200: (in the range you
want it to be acurate), test against a themometer or probe style pyrometer not
another guage, you might be real supprised the spread guages can have from
reality. I think guages are very important but you should use them as a
relative
temperature reading not as a precise instrument reading. On water temp
10-25: off is not unusual.....I would be interested so let us know what you
find......chuck
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