Bubbles in Coolant
 

Hello, I just got the rx8 2 weeks ago, Why would my coolant bottle be showing up as what looks to be dirty bubbles in the bottle? Any explanation? The radiator light comes on every once in a while randomly, but mostly seems to be when its very hot outside. The Temp gauge doesnt change. Car has 57k miles

temp gauge is near useless. Check for a leak

How do I check for leaks? Maybe there's air in the system?

Bubbles? Is it old swill? Do a flush and refill there are threads on how to do it. Reinspect for leaks, inspect hose condition and as mentioned get a real coolant temp gauge cause the stock temp and oil pressure are fake idiot meters. Shame on Mazda for that... sigh.. whoever did the 5-20 oil and the fake gauges need Hari Kari lol.

Definition of old swill please. Thanks for the help, flushing it when I get home. I'm most likely going to purchase the racingbeat gauge setup cause I have the nav unit in the way