1995 Cadillac DeVille Owner's Manual - Page 291
1995 Cadillac DeVille Manual
Page 291 highlights
. ... 1 RADIATOR .PRESSURE CAP NOTICE: Your radiator pressure cap is a 15 psi (105 k p a ) pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage from overheating. Be sure the arrows on the cap line up with the overflow tube on the radiator filler neck.
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