An 89 Honda Civic LX holds 4.8 quarts of coolant. Some models of this car take as much as 5.8 quarts.
generally most radiator caps should hold 15psi, if they drop the cap is no good.
The Honda Civic DX/LX can hold up to about 12 gallons of fuel.
it depends on the size and application of the radiator
The gas tank on the 2007 Honda Civic holds 13.2 gal..
The gas tank on the 2012 Honda Civic holds 13.2 gal..
The gas tank on the 2001 Honda Civic holds 13.2 gal..
The gas tank on the 2011 Honda Civic holds 13.2 gal..
The gas tank on the 2014 Honda Civic holds 13.2 gal..
The gas tank on the 2002 Honda Civic holds 13.2 gal..
The gas tank on the 2013 Honda Civic holds 13.2 gal..
The gas tank on the 2006 Honda Civic holds 13.2 gal..