How much Sea Foam should I use with premium fuel? [SOLVED]

Thanks for the question Jeffrey. Adding a full can to a half tank will work better for cleaning than adding a partial can. I always like to add a full can of Sea Foam when the tank is lower, then drive at least 20 miles with the higher concentration before adding fuel. Depending on your expectations for cleaning, can add a full can now or wait until you have less tank fuel. Hope this helps!