Mixture rich for taxi?
Just a question on what other people were taught/do. As a pilot who just flies for the fun of it, I enjoy hiring different aircraft and flying in different areas of Australia. Where I was taught to fly, after start-up the mixture is leaned and stays there until your before take-off checks, from the abinitio trainer to twins. In other places I have hired from, the instructors have forbidden me from leaning the mixture at all. One of them said it is better to foul up the plugs and then clear them at the run-up in preference to taking off with the mixture inadvertantly still leaned.
Is leaning the mixture on the ground an acceptable practice?