I'm going to be flushing and refilling the coolant system soon. I might replace all 6 hoses and clamps along with the expansion tank. This site says that Volvo OE hoses aren't what they used to be and may not be worth the money. Mackay hoses available from fcpeuro.com are said to be of good quality. The best clamps are said to be the Breeze aero seal liner clamps because they won't cut into the hose. What size clamps do i need to buy. There are 12 of them. The four for the radiator hoses, the four for the heater hoses, and the four for the expansion tank hoses. For the hoses, Volvo OE, Mackay or another brand? Best hose regardless of price. Clamp sizes in millimeter. This site is great. They should have a site like this for all cars. Thanks for your help.