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Sea Foam Motor Treatment | Fuel System Cleaner, Fuel Stabilizer & Oil Treatment | Gas & Diesel Additive for Cars & Trucks| 16 oz, Pack of 2

  • Based on 8,355 reviews
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Availability: In Stock.
Fulfilled by JBTools

Arrives Friday, Aug 14
Order within 23 hours and 38 minutes
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Size: 16 Fl Oz (Pack of 2)


Features

  • DEEP FUEL SYSTEM CLEANING - Cleans the entire fuel system (injectors, carburetor passageways, intake valves, and chamber areas) to help restore power, MPG, and throttle response.
  • FUEL ADDITIVE FOR GASOLINE AND DIESEL ENGINES - Breaks down fuel residues and varnish for smoother idling and cleaner combustion in gasoline and diesel engines.
  • OIL TREATMENT FOR ENGINE CLEANING - Cleans sludge and deposits that can restrict oil flow and lubrication in motor oil crankcases, helping support longer engine life in car and truck engines.
  • FUEL STABILIZER - Keeps gas or diesel fresh for up to 2 years. Ideal as a fuel stabilizer and gas stabilizer for stored cars, motorcycles, and generators.
  • SAFE FOR ALL ENGINES & FUELS - Compatible with all gasoline and diesel fuels and blends, including E10 and E85. Trusted for use as a gasoline and diesel fuel additive.

Description

Visit the Store Visit the Store Visit the Store Visit the Store Sea Foam works through fuel injectors and carburetors to help remove harmful fuel residues and deposits from fuel passageways and upper engine areas Use Sea Foam in gasoline and diesel engines, gasoline or diesel fuel, and conventional or synthetic motor oil Sea Foam helps clean harmful residues and deposits that can restrict oil flow and proper engine lubrication Sea Foam helps fuel resist evaporation, preserves ignition vapors, adds protective lubricity, and prevents the formation of gum in fuel systems For cars & trucks driven regularly, add Sea Foam to your fuel tank every 3,000 miles Adding Sea Foam to tanks help prevent and overcome gum and varnish formation, overcoming problems like hard starting, rough running and loss of power Use Sea Foam to help lost engine power, oil consumption and poor fuel efficiency caused by degraded fuel and oil restrictions that build up over time Sea Foam helps clean harmful fuel and oil residues that often lead to problems like hard starting, rough engine idle, oil burning, and loss of power How do I add Sea Foam to my fuel system? For cars and trucks, pour a full can into your fuel. All you do is remove the cap and pour the can into your gas tank. How do I add Sea Foam to my oil system? All you do is remove the oil filler cap, and add 1 oz of Sea Foam per quart of engine oil into your oil crankcase. We recommend adding it 100-300 miles before each oil change. For best results, use every oil interval. Can Sea Foam be used in any engine? Sea Foam Motor Treatment can be used in all types of gas and diesel engines including cars, trucks, motorcycles, boats, ATVs, dirtbikes, tractors, mowers, snowblowers, chainsaws, generators, RVs, and more. How do I use Sea Foam to stabilize stored fuel and equipment? Add 1 oz of Sea Foam per gallon of fuel before storing your vehicle or equipment. Sea Foam helps keep stored fuel fresh and protected for up to two years. How often can I use Sea Foam? For cars and trucks, we recommend adding Sea Foam every 3,000 miles. For small engines or engines that aren’t used every day, add to every tank of fuel. Stop problems before they start. Sea Foam is trusted by millions every day to keep their engines running clean and trouble-free. Sea Foam Motor Treatment Sea Foam High Mileage Sea Foam Marine PRO Sea Foam Motor Treatment

Manufacturer: ‎Sea Foam


Brand: ‎Sea Foam


Item Weight: ‎2 pounds


Product Dimensions: ‎10 x 10 x 5 inches


Item model number: ‎SF-16-2PK


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎SF-16-2PK


ASIN: B07DHHSQMS


Customer Reviews: 4.8 4.8 out of 5 stars (8,355) 4.8 out of 5 stars


Best Sellers Rank: #563 in Automotive (See Top 100 in Automotive) #3 in Fuel System Cleaners


Date First Available: August 29, 2014


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • The Ultimate Multi-Use Motor Treatment – A Must-Have for Any Vehicle!
Color: Pack of 4
The Sea Foam SF-16 Motor Treatment is an outstanding product that truly delivers on its promises. After using it in multiple applications for my vehicles, I’m convinced this is a must-have for anyone looking to maintain and enhance engine performance. The 4-pack is an excellent value and ensures I always have some on hand for routine maintenance. Why Sea Foam Stands Out Multi-Use Versatility: This product is a game-changer! I’ve used it as a fuel additive, an oil treatment, and even to clean out stubborn deposits in my carburetor. It works flawlessly across applications, making it an all-in-one solution for keeping engines running smoothly. Improved Performance: After adding Sea Foam to my fuel tank, I noticed a significant improvement in my vehicle’s fuel efficiency and a smoother idle. It’s particularly effective at removing deposits and buildup that can reduce performance over time. Easy to Use: The instructions are straightforward, whether you’re using it for fuel, oil, or cleaning purposes. The precise measuring cap ensures no mess or guesswork, making it simple to get the correct dosage every time. Great for Long-Term Maintenance: Regular use of Sea Foam has made a noticeable difference in prolonging the life of my engine. I’ve also used it to revive an older lawnmower engine, which now runs like new! This product pays for itself by preventing costly repairs. Packaging and Value The 4-pack is perfect for multi-vehicle households or anyone maintaining more than just a car. I’ve used it in my truck, car, and small engines like my generator and lawn equipment, and I still have plenty left. Pro Tips Add Sea Foam to your fuel before a long drive to maximize its cleaning effect. Use it regularly in oil changes to keep sludge buildup at bay. It’s also great for seasonal storage—just add it to your gas tank to stabilize fuel and protect the engine. Final Thoughts Sea Foam SF-16 is the real deal for anyone who values vehicle performance and longevity. Its multi-use functionality, ease of application, and proven results make it a standout product. I’ve already seen noticeable improvements in my vehicles and equipment, and I’ll continue to use it as a staple in my maintenance routine. Highly recommend it to anyone who takes pride in keeping their engines in top shape! Pro Tip: Whether you’re a DIY mechanic or just looking for a reliable maintenance product, Sea Foam is a must-have. It’s one of the simplest and most effective ways to protect your investment and extend the life of your engine. Don’t hesitate—this 4-pack is worth every penny! ... show more
Reviewed in the United States on January 12, 2025 by Jesse S.

  • Engines run smoothly and efficiently
Color: Pack of 2
I’ve been using Sea Foam SF-16 in both my outboard motor and sailboat, and it has proven to be an invaluable product for maintaining engine performance. This motor treatment is incredibly versatile and effective, making it a staple in my marine maintenance routine. One of the standout benefits of Sea Foam SF-16 is its ability to clean and lubricate the entire fuel system. It effectively removes harmful deposits and residues that can build up over time, ensuring that my engines run smoothly and efficiently. This is particularly important for marine engines, which can be prone to issues due to the harsh operating environment. I also appreciate how Sea Foam stabilizes fuel. This is crucial for my sailboat, which sometimes sits unused for extended periods. By adding Sea Foam to the fuel tank, I can be confident that the fuel remains fresh and free from moisture, preventing potential engine problems when I’m ready to hit the water again. Another great feature is its ease of use. Simply adding the recommended amount to the fuel tank is all it takes to start seeing the benefits. I’ve noticed a significant improvement in engine performance, with smoother idling and better throttle response. It also helps reduce emissions, which is a nice bonus for the environment. Overall, Sea Foam SF-16 is a fantastic product that I highly recommend to anyone with an outboard motor or sailboat. It keeps engines clean, running smoothly, and protected from the elements, making it a must-have for any boat owner. ... show more
Reviewed in the United States on September 24, 2024 by mrtn wntr

  • Good stuff for small engines
Color: 3 Pack
I use this for my lawn equipment and outdoor tools. Keeps them running great.
Reviewed in the United States on May 12, 2026 by Soop

  • Additive for Gas Tank
Color: 3 Pack
Highly recommended by my mechanic. Car is running great (has 96,000 miles on it) and runs very smooth. Worth the price.
Reviewed in the United States on May 24, 2026 by Charlene Walker

  • One of the Few Fuel Additives I Keep Buying
Color: Pack of 2
I've been using this product in my 2015 Ford F-150 for more than five years, and it's one of the few fuel additives that has earned a permanent spot in my maintenance routine. I originally started using it as preventive maintenance, but over time I noticed the engine seemed to run smoother after treatment. It's not the kind of product that suddenly turns your truck into a race car, but it has consistently done what I hoped it would do. I've purchased and used it multiple times over the years, which probably says more than anything else I could write. If a product doesn't work or isn't worth the money, I usually don't buy it again. This one keeps finding its way back into my shopping cart. I trust the product, I've had good results with it, and I think it's a reasonable value for the money. Based on my experience, I'll continue using it as part of my regular maintenance routine. If you believe in taking care of your vehicle before problems start, this has been a worthwhile purchase for me. ... show more
Reviewed in the United States on May 29, 2026 by Volunteer State Reviewer

  • Excellent product. Car drive so much better.
Color: 3 Pack
My brother told me about this product. My car drive so much better. Definitely can tell a difference.
Reviewed in the United States on June 3, 2026 by Robin coore

  • Sea Foam Motor Product
Color: 3 Pack
Great Product, Good Price, Fast Delivery. Thank You 😊
Reviewed in the United States on June 1, 2026 by Rodney Parrish

  • I swear by Seafoam, especially for small engines
Color: 3 Pack
I swear by Seafoam. It has really helped out my small engines, especially the 2 strokes and ones that sit around for long periods of time like my leaf blower and roto tiller. After I started adding Seafoam every time I get fuel I have had zero starting issues. They can sit all year and they will still start right up. In my car/trucks with higher miles I've used it to clean out the crankcase with great results. I add a can to the oil right before doing an oil change. I add a can then take a short drive(10 miles) to make sure the oil is up to operating temperature and change the oil once I get home. It does a good job cleaning any sludge out of the pan and the new oil stays looking fresh/clean way longer. ... show more
Reviewed in the United States on May 4, 2026 by Rebecca Lovegrove

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