Hey everyone , i need some help. My temp gauge keeps moving alot during my drive, so im not sure if its screwed up or not. its not changing drastically, but it does move. So my car has 91,000 km on the clock, so i figured its time ot chnage out the thermostat. Any good recommendations or is a stock replacement fine? Also as for radiators what is a good aftermarket one to help cool things down, or is it not worth it and just keep the stocker. and finally if my guage is broken, do i just chnage the sensor on it or is it something more complex. Thanks for your help!