Ratings & Reviews for Sea Foam 16-oz 2-cycle or 4-cycle engines Fuel Additive

Necessity to a long engine life

This is a great product that helps me keep my engine in tip top shape. I’m hoping I can get 12-15 years out of my Jeep. Highly recommend even if it’s using just once a year or with every oil change!

Worked great! I use it in all my engines.

I have the Koehler Courage 19 HP engine in a Ariens 42 inch riding lawn mower. At 13 years old, the engine had been smoking periodically and using oil for the last couple seasons. After running Sea Foam through the fuel system for two tanks, the engine no longer smokes and doesn’t burn oil like it did prior. I use it in everything now and also downloaded a YouTube short on my channel. Great product!

A wonderful product in a world of bad gas.

I learned about Seafoam on the Garage Logic Podcast, and now I’m sold. I’ve used it on all our vehicles, and it helps them run great. And the Deep Creep is a miracle lubricant and penetrating oil, that has literally gotten me out of numerous jams. Great products!

Does the job!

I try to run seafoam in my engine oil about every other oil change. Its actually making the process harder for me because my engine is so clean! Everytime I change my oil and I run my car for a few minutes and then shut it off to check the oil level my engine internals is so clean now that I have to focus really hard to see the level. Its a good problem to have because at 100k miles on my 10 year old car it doesn't burn a drop of oil and I know there is zero sludge building up internally. Gotta ...

Worked for me!

Great stuff! Solved a lot of engine problems for me!

Stabilizes gas, smooths rough idle due to sitting fuel and the varnish build up from fuel.

Cleans away build up in engine oil housing due to many years of vehicle when added to motor oil pre drain.Added to gas the product smooths idle and clears away varnish build up on carburetors . Would recommend to at least try once.

Workes Wonderful!!

My engine light came on in my '16 Ram. Fella at local auto store plugged in computer for me and said it was an issue with oil sensor, told me to grab some Seafoam. I always heard it was great stuff. But now I'm a believer! put 6oz in oil, poured the rest in full gas tank. ran truck 100 miles and changed my oil. Check engine light went out and my truck runs great. I will do this as recommended every 3000 or so. Sooo very happy!!

works great

I use it at least once a month. no issues with knocking or pinging sounds when I get on the gas even with 87 octane

Works

All problems I have dealt with on my truck and cars,even the toys in the garage

Works awesome

Use it for lawn mowers, snowsleds and motorcycles when they sit all season!

Over 10 years using and still works the best. Recommend to all

The best stuff to help clean out your engine. In tank and Engine

worked great

I my small engines the new fuel clogs the carburator, and adding Seafoam it cleans the system. I also use Seafoam to store my small engine fuel tanks in the off season.

Love the product

Does as advertised, easy to follow directions! The fuel treatment takes care of rough running and helps with fuel mileage.

Cleans carbs and injectors, as well as increasing fuel stability

It works!

It works! Need I say more? Use it mainly to start stubborn engines and keep them running smoothly. Also use Sea Foam to winterize and store equipment.

Excellent Gas Treatment

Great product for gas engine carburetors with the lousy gasoline with ethanol in it.

Smooth

Seemed to give my truck a little boost. It was a little sluggish.

Works as advertised.

I use it to winterize lawnmowers, chain saws, tiller, and generators. I use the marine one in my boat at every fill up all summer long.