i have a 1995 blazer 4wd was driving and heater hose plastic tube connecting hose so i replaced it with a new hose and antifreeze didn't notice i used dex-cool antifreeze and now the temp goes from 1/2 to 3/4 on the temp back and forth should i drain it and use the regular? Or what could it be? air in the system or dex cool with reg antifreeze does that to my car? it has more of the reg antifreeze and just like one gallon of dex-cool. Help oh never had temp problems till this has happened

 

chances are its a coincidence.

flush the coolant system,or have someone do it. you dont want dexcool with green. **** happens.


as for the temp....probally a bad thermostat. get a 195 thermostat. have someone else do it if you arent sure.

 

if it was a bad thermostat the bottom hose would be hot right?