Aside from its volume being measured in metric (  :-)  ) , you get a
nice easy-mount bracket for it & it weighs almost nothing like Ed's Pep
Boys unit.  The big advantage is, it's designed to be a sealed system
without a 'burp' vessel. The cap on the bottle is the pressure cap. This
means that  air pressure in the top of the tank forces fluid back into
the engine/radiator as it cools.  The cooling loop is always
pressurized.  Because it's translucent and part of the pressurized
system, you can tell at a glance whether your system is truly full of
coolant.


===>  That does sound nice.  I wonder if you can buy them new?  The 3rd gen
RX-7 AST's have a nasty habit of cracking as they get older, so I don't
think I'd want anything old, plastic, and under pressure.

Now that I think about it, I restored a '65 Corvette that had a similar
sounding tank, but it was aluminum.  

Cheers,
Rusty