Quote:
Originally Posted by Brian
All modern vehicles use a catch can; must be some merit to it!
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Modern vehicles use a remote expansion tank. They fill the available grill area with radiator, no expansion tank as we have on top of our radiators. (and the plastic expansion tank is probably cheaper to produce) The expansion tank's overflow hose goes to the ground, not into a catchcan, because a second tank would serve no purpose.
Our old radiators have a built-in expansion tank. A second, redundant tank serves no purpose.