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Salty Captain Marine Engine Flush – Salt Remover for Boat Engines, Outboards & Personal Watercraft – Cleans Thermostats & Cooling Passages – Helps Prevent Rust & Corrosion – 33.8 fl oz (1L)

Based on 161 reviews
Condition: New
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$22.99
Save $60.20 was $83.19

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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, Nov 5
Order within 1 hour and 9 minutes

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At a glance

Condition
New
Size
33.8 Fl Oz (Pack of 1)
Model
DETENGN1L
Weight
2.29 hundredths lb
Item Form
Liquid
In the box
Engine Flush

Features 5

  • OPTIMIZE ENGINE PERFORMANCE & PROTECTION: Salty Captains Engine Flush removes salt, sand, and oil buildup, ensuring your engine operates at peak efficiency. Protect your motor from corrosion and extend its life with this powerful formula
  • INSANE ANTI-RUST & CORROSION INHIBITORS: Independently tested to outperform competitors, our Engine Flush is proven to reduce metal loss by 64%. It forms a protective barrier, shielding your engine from rust and saltwater damage
  • EASY TO USE WITH CAPTAINS MUSKET: Designed for quick and effective flushing, it works seamlessly with the Captains Musket to make engine maintenance hassle-free. Save time and protect your boat or jet ski with ease
  • EXTEND ENGINE LIFESPAN & AVOID COSTLY REPAIRS: Regular use helps prevent performance issues, reducing the risk of expensive repairs. Keep your engine running smoothly by removing harmful deposits like salt, silt, etc

Specs 13

Brand SALTY CAPTAIN EST - 2019
Item Form Liquid
Specific Uses For Product Engine
Unit Count 33.8 Fluid Ounces
Number of Items 1
Cleaning Agent Formulation Abrasive Cleaner
Recommended Uses For Product For Salt Water & Fresh Water
Brand Name SALTY CAPTAIN EST - 2019

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 5

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


A little pricey but is worth it
Size: 33.8 Fl Oz (Pack of 1)
Good product to rinse your yamaha outboard motor
Reviewed in the United States on May 16, 2026 by Steve

good experience
Size: 33.8 Fl Oz (Pack of 1)
great product, fast shipping, good seller
Reviewed in the United States on July 15, 2026 by Ken

Fantastic product
Size: 33.8 Fl Oz (Pack of 1)
Fantastic product
Reviewed in the United States on July 11, 2026 by David

Great product
Size: 33.8 Fl Oz (Pack of 1)
This stuff works great , on my outboard engine. Mechanics could not believe my outboard had been in saltwater for 150 hours
Reviewed in the United States on June 17, 2026 by Jeffry

Great product
Size: 33.8 Fl Oz (Pack of 1)
Best product for boat engine wash
Reviewed in the United States on January 22, 2026 by Victor Lara

Suds come out of my motor
Size: 33.8 Fl Oz (Pack of 1)
It’s either 4 or 5 stars. I hook it up to my motor and flush. Suds come out. Not sure how well it actually works internally, but better than straight water I suppose. I bought a second jug, so I guess I like it. I also use salt away which I like as well.
Reviewed in the United States on July 28, 2025 by joey lsell

Great product
Size: 33.8 Fl Oz (Pack of 1)
Good stuff, remove marine salt. Just spray on, wait few minutes, rinse of, then use leaf blower to remove water, before water spots occur. Have black accented jet skis. Use this product everyday after riding. Great product
Reviewed in the United States on August 13, 2025 by JayU

GP 1800
Size: 33.8 Fl Oz (Pack of 1)
Foams great. The suds seam to clean as described in instructions. Yamaha GP 1800
Reviewed in the United States on August 18, 2025 by Curtis
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