Im on my way from Ok to Ct. Right now, Normally it runs steady at around 2000-2200 rpms from 60 to 75 mph with a 150° temp. I noticed yesterday it got to 175° when I stopped at a toll and started running 2500 rpms at 70 and up so when I got gas and let it cool down, 150° it was running normal again. Its the factory 60e with a 2600 verter and vette servo. Is this a problem I need to worry about or what?