Hey Tim,

Good question! Yes, you can add Sea Foam directly into the cylinder to soak. Here’s a step by step article on how to do it:
https://seafoamworks.com/soaking-cylinders-to-clean-piston-rings/

Thanks for the question, Carl. Yes, you can use Sea Foam Motor Treatment in your 2014 Chevy Impala. It’ll work great in the gas and oil to clean residues and deposits that reduce performance. Here’s a little more info on how to use it:

• Sea Foam Motor Treatment in fuel. I like to wait until the tank is low (1/4 -1/8 tank), add the whole 16 oz can, and then drive for at least 10-20 miles before refueling. It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits. Add it to fuel like this every 3,000 miles or once a year.
• Sea Foam Motor Treatment in oil. Add 1 ounce of Sea Foam per quart of oil in the crankcase. We recommend adding it 100-300 miles before your next oil change. That gives the Sea Foam enough time to circulate and clean, and it allows all the reliquefied oil residues to be drained away with the old oil. To help progressively clean up your oil crankcase, add it before every oil change.

Hope that helps and let me know if there’s anything else!

Thanks for the question, Mark. Yes, you can use Sea Foam in both the fuel and the oil in your Kia Spectra.

In fuel, I’d recommend waiting until the tank is low, about 1/4 tank or less. Then, add a full 16 oz can and drive at least 10–20 miles before refueling. The higher concentration works much better and faster to clean fuel gum, varnish, and other deposits.

In oil, use 1 oz of Sea Foam per quart of oil, added 100–300 miles before your next oil change.

High Mileage Motor Treatment is also a great option as it’s a great cleaner for older vehicles.

Hope that helps and let me know if you have any other questions!

Best,
Conner
Sea Foam