My motometer seems to have TWO different liquids. A clear/silver liquid column is visible most times (which I thought might have been mercury?). When the car reaches operating temperature, a red column just starts to poke up into the visible zone. I'm confused because the clear/silver liquid appears to have breaks in the column. You can see this in the photo, taken after a 20 min run in the car. The red is just visible at the bottom, but there is a definite second column with what appears to be two air bubbles in it, one large and one small.
What's going on here?
I confess to laying the motometer sideways while topping up the radiator before I knew better.
