370Z Engine Failure

Originally Posted by billydsz

Exactly. I wasn't referring to some arbitrary cya spec by the manufacturer, who makes those to save themselves from warranty claims. As warmandscsi said above, a properly made modern engine ( when street driving) shouldn't lose oil of any noticeable amount between changes. If it does, you have some sort of defect, or a poor break-in. My 92 explorer loses a quart of oil every 5k miles, and that engine has 170k on it.