Is it better to leave Sea Foam in a freshly changed oil or the 100-300 miles prior to changing it? [SOLVED]

Thanks for the question, Lem!

We recommend adding it 100-300 miles before you change your oil. Here’s why:

Sea Foam Sea Foam reliquefies oil residues and deposits so they can be drained away with the old oil. It’s a very good cleaner.

Adding it 100-300 miles before your next oil change 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.