Centrifugal force basically.
Oil would spill out of the breathers on the outside (right side)
Wet sump oil pans are also built with this in mind. The sump which holds the
majority of the oil and the pickup tube are located on
the right side where all the cornering g-forces collect the oil. If the sump
where not positioned like that, chances are the oil
pump would gulp air during a hard turn. Most likely burning up the bearings.
But Winston Cup cars don't use wet sump oiling so they don't have to worry about
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