How do I use Sea Foam Marine PRO?

Add Marine PRO to your fuel to clean and protect critical engine areas. Marine PRO is specially formulated to help maintain maximum horsepower and performance.

How Much Do I Use for Fuel System Maintenance?

For regular fuel system maintenance, add 1 oz per 1.5 gallons of gasoline. One can treats up to 30 gallons of fuel. Add to every tank for best results.

How Much Do I Use for Cleaning?

For cleaning, add 2 or more oz. per gallon to a low tank of fuel – the more you add to fuel, the better it cleans!

How do I use Sea Foam Marine Pro as a fuel stabilizer?

For stabilizing fuel, add 1 oz per gallon of fuel. Run the engine before storage to draw the treated fuel into the system. Marine PRO stabilizes fuel up to two years.

How do I use Marine PRO for priming marine fuel filters?

Use 50/50 mixed with gas. For priming marine fuel filters, use 100% Marine PRO. For 2-stroke pre-mix, add 2 oz. per gallon.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Sea Foam Marine PRO Marine Fuel System Treatment MP20, 20 oz, Pack of 1

Product ID: 633828475

Details

Brand
Sea Foam
Item form
item_form
Item volume
20 Fluid
Scent
20 oz
Unit count
1 Count

⛽20 oz concentrated formula

⚙️Cleans & lubricates entire fuel system

🛥️Universal fit for all marine engines

Bs.2149

Duties & taxes included

In stock

Sold byAmazon BoliviaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛥️ Keep your marine engine cruising like new — every season, every ride!

ULTIMATE FUEL FRESHNESS - Stabilizes fuel for long-term storage and peak performance
EFFORTLESS ENGINE REVIVAL - Starts faster and runs smoother every time
HIGH TEMP LUBRICITY BOOST - Protects upper engine parts from wear and tear
UNIVERSAL MARINE COMPATIBILITY - Safe for all 2-stroke & 4-stroke gasoline marine engines
COMPREHENSIVE FUEL SYSTEM DETOX - Removes harmful deposits from injectors to pistons

Sea Foam Marine PRO is a 20 oz concentrated fuel system treatment designed for gasoline marine engines. It cleans fuel injectors, carburetors, and engine components while stabilizing fuel for long-term storage. Compatible with all 2-stroke and 4-stroke marine engines, it enhances engine start-up, smoothness, and longevity by reducing deposits and adding high-temp lubricity.

Specifications

ASIN	B071LLP5VB
Best Sellers Rank	#170,162 in Sporting Goods ( See Top 100 in Sporting Goods ) #286 in Boat Maintenance Supplies
Brand	Sea Foam
Customer Reviews	4.8 4.8 out of 5 stars (946)
Date First Available	22 January 2020
Item Weight	581 g
Item model number	MP20
Manufacturer	SEAFOAM
Manufacturer Part Number	MP20
Model	Sea Foam Marine PRO - 20 OZ.
Product Dimensions	7.62 x 7.62 x 25.4 cm; 581 g
Special Features	Concentrated

Reviews

B**S

I added this to my Johnson V4 140hp outboard.y

I added this to my Johnson V4 140hp outboard. My boat sat for at least two and a half years, and I had been refused a service at a local location due to their policy not servicing any outboard older than 2000. I came across this stuff and I’m happy I did. I followed their instruction they recommended and I used a gas mix ratio I liked that made more sense for my needs after watching some vids I drained the old fuel and added the fresh gas mix, I had ended up needing to mist the air intake with gas to get it started taking several attempts. . Once I added I ran for 20 mins with muffs water supply then let sit for the night which was recommended to allow the Seafoam time to eat junk and lube and treat internal parts that may be gummed up. Next day I was able to restart 3rd/4th attempt with no support with fuel in the in takes it smoked a bit while burning off the junk but, now she starts up nicely around weeks later with 1st to3rd at starting is running nicely so I recommend this product and will use on a regular schedule now.. Thanks.

4.08.2026

T**K

Your boat engine deserves to be treated with Seafoam Marine Pro !

If you own a boat you really need to use Seafoam Marine Pro in your fuel to get the best performance out of the engine. Also works to stabilize the fuel when the boat is in storage during the offseason. Try it and see for yourself!!

6.09.2026

V**R

all good thanks

21.10.2026

R**Y

Great stuff

Cleaned carbs and enjectors perfectly👍

8.11.2024

R**O

How do I measure success?

Did see any difference yet but no issues thus far

21.08.2025

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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