- 5L Salt Wash Deteregent
- 5L Outboard & PWC Engine Flush Solution
Wash & Flush BIG REFILL
Wash & Flush BIG REFILL
4.8 / 5.0
226 Reviews 226total reviews
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Wash & Flush BIG REFILL
4.8
Rated 4.8 out of 5 stars
226 Reviews
Regular price
$180.00
Regular price
$240.00
Sale price
$180.00
Unit price
/
per
Tax included.
✅ Free shipping Australia-wide
✅ 5L provides over 70 washes & flushes
✅ Australia's most trusted anti-corrosion formula
Stock up and save with our 5L Salt Wash Detergent and Engine Flush Solution – built for serious protection. Perfect for regular maintenance or frequent adventurers, these bulk sizes keep your gear salt-free and running like new. Clean more, refill less, and stay ready for your next mission on the water.
✅ Free shipping Australia-wide
✅ 5L provides over 70 washes & flushes
✅ Australia's most trusted anti-corrosion formula
Stock up and save with our 5L Salt Wash Detergent and Engine Flush Solution – built for serious protection. Perfect for regular maintenance or frequent adventurers, these bulk sizes keep your gear salt-free and running like new. Clean more, refill less, and stay ready for your next mission on the water.
What you get in this bundle
About the products in this kit
5L Exterior Salt Wash Detergent
This high-performance detergent is built to break down salt deposits and mineral buildup before they cause long-term corrosion. Infused with anti-rust inhibitors and a powerful degreasing formula, it’s tough on grime but safe on paintwork, plastics, glass, gel coat, and metals.
Use it through The Captain’s Musket or your foam cannon to get a thick, even lather that clings and cuts through the muck. It is ideal for boats, jetskis, trailers, 4WDs, RVs, and any gear exposed to salt or the elements.
Dilution: 100ml per wash (1:10 ratio)—a single drum can provide up to 50 washes.
5L Engine Flush Solution
Salt doesn’t just sit on the surface — it gets inside your cooling system where you can’t see it. That’s where this solution comes in. Designed to flow through your outboard, jet ski, or PWC cooling system, it breaks down internal salt build-up and leaves behind a protective barrier to reduce corrosion.
Use it with a flush port adapter or run it through The Captain’s Musket with the flush setting for quick, no-fuss maintenance.
Perfect for both saltwater and brackish conditions, this is your engine's best mate after every mission.
FAQ
Q: What’s the pH level of the Salt Wash Detergent?
A: The Salt Wash Detergent is pH neutral (~7), making it safe for frequent use on a wide range of materials without causing degradation. It’s effective at removing salt residue and grime while being gentle on paint, gelcoat, rubber, metals, and plastics.
Q: Will the Engine Flush affect rubber seals or gaskets in my outboard/PWC?
A: No — the Engine Flush Solution is formulated to be non-aggressive and is safe on rubber seals, O-rings, gaskets, and internal cooling components. It won’t dry out or degrade sensitive parts.
Q: How long should the Engine Flush be run for?
A: We recommend running the flush for 2–3 minutes through your outboard or PWC cooling system. This allows enough time to dissolve salt build-up and circulate corrosion inhibitors throughout the internal pathways. Always follow with a clean water rinse.
Q: Does the Salt Wash leave any residue?
A: No. The Salt Wash is designed to rinse clean, leaving behind no sticky or soapy residue. It does, however, leave a light protective film that helps inhibit corrosion and slow down salt crystallisation between washes.
Q: Is it safe on aluminium, stainless, and coated surfaces?
A: Yes — being pH neutral, it’s 100% safe on polished and anodised aluminium, stainless steel, powder-coated parts, and painted surfaces. It’s perfect for boats, trailers, bullbars, and other marine or 4WD components.
Q: How many washes can I get from the 5L Salt Wash?
A: Each wash typically uses about 70ml of product, which means you can get up to 70 washes from the 5L bottle. Usage may vary depending on how heavy the salt build-up is and your foam gun settings.
Q: Is the Engine Flush suitable for all engine brands?
A: Yes. The solution is compatible with all major outboard and PWC brands including Yamaha, Mercury, Honda, Suzuki, Sea-Doo, and more – as long as they use a raw water cooling system with a standard flush port or earmuff adapter.
Shipping & Delivery
Location: Our warehouse is located at 2/14 Thomas Hanlon Court, Yatala 4207.
Free Shipping: All Australian orders over $170 qualify for free shipping*
Flat Rate Shipping: For orders under $170, we offer a flat rate shipping fee of $9 within Australia*
*International orders will be required pay for up-to-date shipping charges, calculated at checkout. Bulky items incur additional shipping charges, calculated at checkout.
Shipping Carriers: We use Australia Post and Aramex within Australia.
Dispatch Time: Orders are typically dispatched within 1-3 business days.
Delivery Times:
Australia:
- Metro Areas: Standard 2-5 business days & Express 1-3 business days
- Western Australia & Northern Territory: 3-7 business days & express 2-3 business days
International:
- Express: 5 business days
- Standard: 7-10 business days
Pickup: Local pickup is available from our warehouse at 2/14 Thomas Hanlon Court, Yatala 4207. Please select the "Pickup" option at checkout.
Possible Delays: Occasionally, shipping may take an extra day or two. If your order takes longer than expected, please feel free to reach out to us at admin@saltycaptain.co.
Easter Sale – Terms & Conditions
● Sale Dates: Valid from Friday 25 April to Sunday 27 April
2025 (AEST).
● Captain Cashback Offers:
○ Spend $119 = Receive $20 value
○ Spend $199 = Receive $50 value
○ Spend $399+ = Receive $100 value
● Cashback is delivered via physical vouchers included in
your order:
○ Vouchers are issued in $10 or $50
denominations
○ Only one voucher can be used per
order
○ Vouchers cannot be used to
discount already marked-down or promotional items
○ Voucher value and quantity will
be shown on your packing slip
● No discount codes required – offers are automatically
applied at checkout based on cart total.
● All products are eligible during the Easter sale.
● Cannot be combined with other promotions or codes.
● Offer valid while stock lasts – limited availability.
● Shipping times may vary due to high order volume.
Need Help?
Contact us at admin@saltycaptain.co – we’re happy to help.








REAL REVIEWS. REAL CUSTOMERS
The freshest reviews are in
4.8
Rated 4.8 out of 5 stars
Based on 226 reviews
5
Rated out of 5 stars
194
Total 5 star reviews: 194 4
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29
Total 4 star reviews: 29 3
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Total 3 star reviews: 3 2
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Total 2 star reviews: 0 1
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Total 1 star reviews: 0 99%would recommend these products
Slide 1 selected
226 reviews
- EMEthan M.Verified BuyerReviewingSalt Wash DetergentI recommend this productRated 5 out of 5 stars1 month agoImpressed after first wash!
Living in northwest Ohio can take a toll on vehicles, especially personal vehicles that you do your best to take care of while still working with it. I snow plow with my personal vehicle so it gets very dirty and very salty. After the first wash I was highly impressed. I put Salty Captain soap in a foam cannon on a pressure washer and soaked my truck and let it sit accordingly. The soap foamed very well and provided a great coat on my truck. I feel as though it got rid of the salt and road grime very well. I’m excited to use it further and hope it makes the truck I take a lot of pride in last longer!
Incentivized reviewThis review was received as part of a promotion or in exchange for an incentive. The incentive was offered to both positive and negative reviews.Was this helpful? - LBLeroy B.Verified BuyerReviewingSalt Wash DetergentI recommend this productRated 5 out of 5 stars4 months agoKeeping boat and 4x4 clean
Amazing for the boat wouldn't use anything else
Incentivized reviewThis review was received as part of a promotion or in exchange for an incentive. The incentive was offered to both positive and negative reviews.Was this helpful? - DWDale W.Verified BuyerReviewingSalt Wash DetergentI recommend this productRated 5 out of 5 stars6 months agoSalt Wash
Good product. Cleans fish grime and dirt extremely well. Very versatile onboard.
Incentivized reviewThis review was received as part of a promotion or in exchange for an incentive. The incentive was offered to both positive and negative reviews.Was this helpful? - BBrodieVerified BuyerReviewingCaptain's Rescue BoxI recommend this productRated 5 out of 5 stars7 months agoAbsolutely outstanding
This one stop boatie box the easiest way to clean your boat
An incredible product highly recommend
Incentivized reviewThis review was received as part of a promotion or in exchange for an incentive. The incentive was offered to both positive and negative reviews.Was this helpful? - BBreeVerified BuyerReviewingCaptain's Rescue BoxI recommend this productRated 5 out of 5 stars7 months agoCaptains Rescue Box Review
Amazing products! Super easy to use and made the boat look brand new again. We have been using these products after long days fishing and they are definitely worth the purchase if you want to keep your boat looking spectacular!l and engine flushed!
Incentivized reviewThis review was received as part of a promotion or in exchange for an incentive. The incentive was offered to both positive and negative reviews.Was this helpful?
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CAPTAIN’S TIPS
The Wash & Flush BIG REFILL works great with these products: