オリジナル投稿者： Richard ,
After watching the video on you tube i replaced the thermostat on my Mazda 3 in 45 minutes. I placed a drain pan underon the t-stat housing and removed the tensioner and hoses. About 2quarts of coolant came out which i put back in after repair. If you're willing to pay $200 for the job, Ill do them all day long. Not a difficult job people! Bought part on Amazon.com.