Just remember that a coolant recovery system is different than a simple overflow can. The coolant recovery system requires a different radiator cap and overflowed coolant generally runs into the BOTTOM of the recovery canister. Coolant is added to the canister and not the radiator when coolant is needed. When the coolant cools back down, it's sucked back into the radiator. A simple overflow container system uses a regular pressure cap and generally fills from the top and must either be removed to be emptied or have a drain at the bottom. Replacing coolant is done by removing the radiator cap.
Dale
