Thanks for the question, Joe! Add one ounce of Sea Foam per quart of oil in the crankcase. That adds up to 5 ounces of Sea Foam in the oil crankcase of your Mazda 6.

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 (oil residues and deposits) when you change your oil.

Thanks for the question! Yes, you can add Sea Foam Motor Treatment to your CAT 3208’s crankcase. Add 1 ounce of Sea Foam per quart of oil. That comes out to 24 oz of Sea Foam (4 quarts in a gallon x 6 gallons).

Thanks for the question! It’s safe to leave Sea Foam in the oil for as long as you’d like. That said, 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.

Good question, Paul. In oil, Sea Foam reliquefies harmful residues and deposits that can restrict oil flow. The big benefit to adding Sea Foam at every oil interval is simply to help keep everything clean and prevent deposits from forming so your engine runs better and lasts longer. It’s a great way to keep your oil system as clean as possible. If you don’t add it to every oil change (which I’d recommend), add it at least once a year.

I’d recommend adding the Sea Foam 100-300 miles before you change your oil. That gives the Sea Foam enough time to circulate and clean, and allows you to drain away any crud that the Sea Foam reliquefied when you change the oil. Do not exceed 1 oz of Sea Foam per quart of oil.