Does your car run hotter at higher speeds?

1968FormulaS340 said

All this tells me is that you don't have any idea what temperature your car is running.

Put a real gauge in it then you will know. You may not have a problem at all.

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I agree with this 100%, but I don't plan to put in an aftermarket gauge in the middle of a long haul.

Appreciate the quick advice from everyone, that gives me more peace of mind while driving it the rest of the way. Sounds like if I keep on keeping it reasonably cool towards what I'm used to seeing, it should be fine.