Radiator blower fan always comes on the first time I pull onto the highway
I dunno if this is normal? I have a 5.9L cummins turbo diesel with an allison at545 transmission.
Regardless of it being hot or cold, every time I first go on the highway, the engine will heat up to over 220 and then the cooling fan will turn on for about 2-3 minutes, bring it back down to 210 and then it will shut off.
Is this normal?