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Old 10-01-2010, 10:45 PM   #5
Peter B
TF Site Team
 
City: Ex-Brisbane, (Australia), now Bribie Island, Qld
Vessel Name: Now boatless - sold 6/2018
Vessel Model: Had a Clipper (CHB) 34
Join Date: Jun 2008
Posts: 10,101
RE: Coolant recovery

Quote:
Shoalwaters wrote:

The coolant level in your expansion tank is probably down a little when cold and expands to brim full when at operating temp. I would expect little or no coolant to appear in your gallon jug as the engine warms up. A quart container should be adequate as a permanent catch-bottle. Fill your expansion tank to the brim, put a little coolant in the bottle, and check that the end of the hose dips below the surface of the coolant.
If you do this, and like in your car, you want the excess pushed out to be sucked back in from the overflow bottle when cool, you would need to change the cap to one of the correct pressure relief with the right sort of valve in it so it will suck it back.

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