I just got a metal coolant bottle in with some other parts that I bought. It's aluminum, with welded connections. It also has a piece of tubing installed that lets you check the level of coolant in the bottle without opening it. Picture: http://www.buffalochips.org/delorean/water-bottle.jpg 1. Who sold this originally? Just curious, as it doesn't really matter. 2. The tubing for the level check is getting pretty yellowed. Does anyone know where I can get some 3/8" ID clear tubing that will handle the temperatures and pressures of a cooling system? This is a fairly heavy walled tubing. Much heavier than what I'm finding at the local hardware stores. Plus, what I've located so far has a max temp of 165 deg (plus or minus a few degrees depending on who made it). I was figuring 250 to 300 deg with at least 25 lbs of pressure to be on the safe side. It is only a 4" piece of tubing, so it may be that they used the 165 deg stuff figuring that a short piece like that would hold up fine. Anybody know anything about this bottle? My original plastic bottle has been holding up great, but I figured I would install this alum bottle this winter to play it safe. Thanks! Mark N VIN 6820