Thanks for the question, Richard! Yes, you can use Sea Foam in your Packard. It’s made with petroleum ingredients that won’t harm anything and work well to clean fuel residues and varnish.

Here are a few recommendations on how to use it:

• Sea Foam Motor Treatment in fuel. I like to wait until the tank is low (2-4 gallons), 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.
• 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.

If it’s sitting for any length of time, you can add Sea Foam to every tank to prevent the fuel from degrading and gum and varnish from forming while it’s in storage.

Thanks for the question!

You don’t have to wait until your tank is that low, but it’s the most effective way to get a strong cleaning concentration. When there are only a couple gallons of fuel in the tank, adding a full can of Sea Foam creates a higher ratio of treatment to fuel, so it will clean faster and better than if you were to add a can to a larger volume of fuel.

That said, you can add Sea Foam to a full tank at any time—it will still work to clean and lubricate, just at a lower concentration. Many people add a full can to a full tank as part of regular  preventative maintenance.

So the short answer: use it whenever it’s convenient, but adding it when the tank is low gives the strongest cleaning results.

Thanks for the question!

The short answer is yes, Sea Foam can be added to two-year-old gas. As you run the vehicle, it’ll work to clean any fuel residues that formed while it sat.

Note: Sea Foam won’t “restore” old fuel. It will reliquefy any fuel residues or deposits that formed while the vehicle sat, and prevent the fuel from degrading any further.

Here are a few additional thoughts. There are two things you’ll want to do with your vehicle: 1) use up the old fuel (or drain it), and 2) clean up the fuel system from any fuel residues and varnish that formed while the vehicle was sitting.

Two-year-old fuel should start up just fine. If you’re going to be using the vehicle frequently, drive it until you’re at about ¼ tank of gas, add an entire 16 oz can of High Mileage, and drive it until almost empty before refueling with fresh fuel. If you’re not going to be using it in the near future, drain the old fuel, add a can of High Mileage with 2-4 gallons of fresh gas, and drive it until almost empty.

The high concentration of High Mileage will do a good (and fast) job cleaning.

Thanks for the question!

Yes, you can use Sea Foam Motor Treatment in a generator. There’s two ways I’d recommend using it:

• For periodic cleaning. If you haven’t run Sea Foam through it before, add 8 oz of Sea Foam to half a gallon of fuel and run it on the high concentration until it’s empty. That will do a good job cleaning up any fuel residues.
• For preventative maintenance and protecting fuel. Add 2 ounces of Sea Foam to every gallon of fuel. This will prevent the fuel from degrading, as well as prevent fuel residues form forming while the generator sits. Adding Sea Foam to every tank of fuel will

Thanks for the question, Alex!

I’d use Sea Foam Motor Treatment (red and white can) or High Mileage (black and silver can). Both are made to clean fuel residues and deposits. High Mileage is formulated as a strong cleaner for higher-mileage vehicles with years of stubborn buildup/deposits. Either one would work!