Conventional green coolant lasts two to three years or 30,000 to 50,000 miles. Extended-life orange and red coolants last five years or 100,000 to 150,000 miles under normal operating conditions. The ...

Add Yahoo as a preferred source to see more of our stories on Google. The white cap on the side of the radiator serves a specific function. Photo: myHOMEBOOK Winter is the season when you use heating.

At a glance Expert's Rating Pros ・Silent ・Powerful ・Quick to heat up Cons ・Expensive to run ・No smart features or scheduling Our Verdict This oil filled radiator is quiet, powerful and fast to heat a ...