I just got a koyo radiator in my db8 and this is my dd. At night when it's like 60 degrees, my thermostat would go back to the c (cold) line when i'm on the interstate. It cools so much, when i get off the interstate and stop, it idles high like it would for a cold start. Main question is this safe for my car since it's gonna start getting colder. Average winter low over here is about 32 degrees. Thanks

Also, this radiator is recommended for race use.

 

Is your thermostats working correctly?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Circusraven &raquo;</TD></TR><TR><TD CLASS="quote">Is your thermostats working correctly?</TD></TR></TABLE>

Its working good. i know its suppose cool better, but i didn't think it would be this good

 

your water thermostat should be keeping the temperatures in check by controlling the amount of cold water coming into the engine from the radiator. Replace it and see how your car behaves.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pepsilude &raquo;</TD></TR><TR><TD CLASS="quote">I just got a koyo radiator in my db8 and this is my dd. At night when it's like 60 degrees, my thermostat would go back to the c (cold) line when i'm on the interstate. It cools so much, when i get off the interstate and stop, it idles high like it would for a cold start. Main question is this safe for my car since it's gonna start getting colder. Average winter low over here is about 32 degrees. Thanks

Also, this radiator is recommended for race use. </TD></TR></TABLE>

Listen to those 2. Your thermo is stuck to open. It should be closing, allowing your car to stay warm.