^ Thanks all, got the green stuff, house brand, 50/50 mix in the jug. While this is an old school car, it has no radiator cap, f-in sealed system, to drain you remove the return heater hose from the block, open the radiator. drain, close valve, fill at the block, until it slops out, replace hose, run engine until hot then add at the overflow bottle until full, what a bother. Biggest pain is to collect all 3.5 gallons and dispose of it! :) Back in the day you drove to the end of the driveway, opened the radiator cap, and the drain valve, stuffed the garden hose in the radiator and started her up, ran the car to temp, (heater core on) and waited till the water ran clear, shut down, waited for the water to run out, closed valve, filled radiator until full, left cap off, started car, watched when level went down, filled and filled again. Put cap on and done. Now we have to take the coolant in for disposal, or face a fine :/ IF you get caught of course... ;/