Salt-Away® Concentrate Gallon (128 fl oz.)

The Verdict

If you run saltwater gear — a boat, jet ski, or even fishing tackle — you already know the drill: salt is a slow-motion thief. It corrodes, pits, and seizes everything it touches. Salt-Away Concentrate claims to stop that process chemically, not just rinse it off. After digging through 240 ratings averaging 4.8 stars, here’s the real story.

What you actually get

The gallon jug (128 fl oz) is straightforward: concentrated liquid, a measuring cap, and that’s it. No sprayer, no hose attachment. You’ll need to buy the separate Salt-Away mixing bottle (around $25) or rig your own dilution system. The math works in your favor though — at the recommended 1 oz per gallon of water, this single jug yields 128 gallons of usable solution. For a boat owner running weekly rinses, that’s a season or more of coverage.

How it performs

Salt-Away works differently than soap or simple freshwater rinses. The formula binds to salt crystals and neutralizes them, so they don’t re-crystallize and corrode metal surfaces. This matters most for engines with raw-water cooling systems, outboard lower units, and trailer frames — the places a hose can’t reach but salt water does.

Buyers consistently report visible results. One long-time boater noted, “Been using this for 10 years on my saltwater boats. Flush the engine after every trip and the internals look brand new.” Another reviewer praised it for jet skis: “The previous owner never used anything but freshwater. I ran Salt-Away through the system and found salt chunks coming out. Wish I’d started day one.”

It’s also non-toxic and biodegradable, which matters if you’re flushing on your lawn or near storm drains. Multiple reviewers mentioned it’s safe for freshwater fish tanks (used in tiny amounts) — a testament to how mild it is.

Where it falls short

The biggest frustration is the lack of an applicator. The gallon jug is pure concentrate, and pouring it directly into a hose-end sprayer without measuring will waste product or risk dilution errors. You really need the branded mixing bottle, which adds cost.

Also, the gallon size is overkill for casual users. If you’re rinsing a kayak or a small tackle box, you’ll never work through this before it loses potency. Salt-Away has a shelf life of about two years; the smaller 32 oz bottle is more practical for light-duty use.

Who should buy this

• Saltwater boat owners who trailer their rigs and want to protect the engine, trailer, and all metal components — this is your product.
• Jet ski / PWC riders who ride in saltwater bays or oceans and want to prevent impeller and pump corrosion.
• Charter captains or fishing guides who run gear daily and need a cost-effective bulk solution.

Skip it if you’re a freshwater-only angler, a kayak paddler, or someone who barely touches salt. You’ll spend money on concentrate you won’t use.

FAQ

Q: Can I use Salt-Away in my outboard’s ear muffs? Yes. Run the engine at idle, let the Salt-Away solution flow through the cooling system for 45-60 seconds, then shut off and let it sit. Follow with a freshwater rinse if desired, though the product doesn’t require it.

Q: Will it damage painted surfaces or vinyl? No. It’s pH-neutral and safe on gel coat, paint, vinyl, and rubber. Many reviewers use it on entire boat exteriors, not just engines.

Q: How often should I use it? After every saltwater outing for engines and trailers. For occasional rinsing, once a week is sufficient. The key is consistency — salt left to sit is what causes damage.

The Verdict

Buy it if you own saltwater-exposed equipment and want a proven, chemical solution to corrosion that simple rinsing can’t match. The 4.8-star rating across 240 reviews isn’t hype; this is a product that does exactly what it claims.

Skip it if you’re a light user who won’t finish a gallon before it expires, or if you’re unwilling to invest in the separate mixing bottle.

Rating: 4.6/5 — Half a star deducted for the missing applicator and bulk sizing that doesn’t fit every user. For serious saltwater gear owners, this is the standard.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.