What did you do to your truck today? Chapter II

[Already Gone]

Originally Posted by toolboxchev

Gauge was pointing about 2-4 mm over the first line in operating temperature,outside was very humid in the mid 90's. I had just taken it for a run on the freeway. Cooling systems can be a bear sometimes, I still get a little rust after a flush in my coolant reservoir. I should add also that I am using a 16 lb radiator cap which will flow both ways as it should with a reservoir.

The gauge never used to read this way that is why it got me worried. Gen I block with a hot Accel Super Coil HEI and R45ts plugs to burn off any oil blow by.

Do you think maybe the gauge is not working properly?
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