At the end of the season I used to dump all my unused ~45:1 premix into my old beater F150 to burn. It didn't mind the extra oil. But now I've just got a van (throttle body fuel inj) or car (multiport FI)... Do you think there's any reason not to "top up" the tank with some premix in these vehicles? Changing the plugs in both is a PITA, so to reduce the risk of fouling a plug, I would just top up the tank (so as to dilute the oil even more).<br /><br />Thoughts? Do you use up leftover pre-mix in your vehicles?<br /><br />Brent