Wendell Voto wrote:

This engine seems to have just one vent tube, is this enough? Could this one be eliminated and just use the one on the center housing?
Wendell

Apparently so. I don't know of anybody that has increased the  size of the
oil pan vent or had any trouble with oil pan venting.
Blow by the oil seals on a Mazda does not seem to be as big a
problem as it is on piston engines.

Paul Lamar
 
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