Can Sea Foam be used if oil was just changed for this oil’s duration? [SOLVED]

Good question, Robert. We recommend adding it 100-300 miles before your next oil change. That gives the Sea Foam enough time to circulate and clean. It also lets you drain away all the reliquefied crud (residues and deposits) when you change your oil. Add 1 oz of Sea Foam per quart of oil in the crankcase. Do not exceed this ratio.

I’d wait until you’re about 300 miles from your next oil change to add the Sea Foam.