Why should you never fill a tank completely full?
a.To save money on product
b.To reduce vehicle weight
c.Liquid expands as it warms and needs room for expansion (outage)
d.To allow space for the pump mechanism
Explanation
You should never fill a tank completely full because liquids expand as they warm. The empty space left in the tank, called outage, allows room for this expansion. Without outage, pressure buildup could damage the tank or cause leaks.