The 1.0 and Fiesta ST share the same Degas tank so about a month ago I replaced mine with Mishimoto's aluminum tank. I cut the quick disconnect off the turbo return line (it was indeed becoming brittle), got a 3/8 to 5/8 barbed adapter from Amazon and hooked it all up to the tank with a short piece of 5/8 heater hose and hose clamped it to the tank. No more quick disconnect! Worked beautifully and haven't had to worry about it anymore. Shop around for the Mishimoto tank (Amazon was cheapest at the time). Its more expensive than the plastic tanks but I think it is worth it.