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PURE OCEANS
-50°F Engine & Water System Antifreeze, Gallon

$5.99

Model # 499848 | Mfg # 499848N
In stock online.

West Marine Pure Oceans -50° (-46°C) Marine Antifreeze provides the ultimate in cold weather and corrosion protection for drinkingwater systems and all engines. Its premium additive package prevents corrosion of aluminum, copper, brass and solder, butwill not harm rubber, seals or hose materials. The 3X-died bright pink color provides excellent blow-through visibility.Formulated with non-toxic, virgin Propylene Glycol (30% Blend), it is tasteless and contains no alcohol. This product isready-to-use; do not dilute it.

  • Provides burst protection to -50°F (-46°C) and freezeprotection within a range of +12°F to +16°F (-11°C to -9°C)
  • When testing with a refractometer or hydrometer designed for use with propylene glycol, freeze point readings on the PG scale will range from +12°F to +16°F

Note: The burst point of PVC pipes used in most drinking water systems is about -10°F (-23°C). When winterizing water systems in regions where temperatures can fall below -10°F (-23°C), we recommend using West Marine Pure Oceans -100°F (-73°C) Marine Antifreeze.

Antifreeze 101

-50°F Engine & Water System Antifreeze, Gallon

Best Use -50 Degrees
Capacity Gallon
Type Antifreeze

West Advisor

The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

REVIEW SNAPSHOT®

by PowerReviews
Pure Oceans -50F Engine & Water System Antifreeze, Gallon
 
4.6

(based on 63 reviews)

Ratings Distribution

  • 5 Stars

     

    (46)

  • 4 Stars

     

    (13)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

97%

of respondents would recommend this to a friend.

Pros

  • Easy to use (51)
  • Protects well (47)
  • Weather proof (17)
  • Visually pleasing (14)

Cons

No Cons

Best Uses

  • Engine (49)
  • Outdoors (12)
  • Indoor (10)
    • Reviewer Profile:
    • Advanced (37), Casual/ recreational (18), Beginner (4), Professional (3)
    • Was this a gift?:
    • No (61)

Most Liked Positive Review

 

This is the "gold" standard -- even though it's pink

We don't always winterize. But when we do, this is what we use.

In previous years -- as liveaboard cruisers, we didn't winterize. Now that we are berthed in the...Read complete review

We don't always winterize. But when we do, this is what we use.

In previous years -- as liveaboard cruisers, we didn't winterize. Now that we are berthed in the Chesapeake, we like to replace the creek water with anti-freeze.

We have a Whitby with a "sea chest" -- all the raw water goes in a single inlet, and we have hoses to engine, galley sink, heads, refrigerator, and A/C coming off the sea chest. Our previous owner rigged a hose fitting onto the bottom of an old 6-gallon bucket. We can put this Pure Oceans Antifreeze into the sea chest, pump the heads, pump the sink, run the deck washdown, and finally start the engine to suck the last of it into the raw water system.

We buy a case each year.

Since it's non-toxic, we rinse and reuse the jugs. We have one, for instance, that we keep dry laundry soap in. We have another that we put the distilled water for batteries in.

VS

Most Liked Negative Review

 

Engine freeze protection only to +16F !! Misleading label

The product label is very misleading. It states "Engine System Caution:.....Because removal of all water from engine systems is nearly impossible, West Marine cautions against using in sustained temperatures...Read complete review

The product label is very misleading. It states "Engine System Caution:.....Because removal of all water from engine systems is nearly impossible, West Marine cautions against using in sustained temperatures below -10 degrees F (-23 C)." I read this and assumed if I ran 6 gallons or so through my engine it would be OK to -10, but last year at 8 degrees F I froze out a casting plug, and so this year I put an unopened bottle of -50 antifreeze into my freezer and it was nearly solid at 0 degrees F. When I looked at the rating chart on the bottle, it states "freeze protection for PVC pipes at +12F", and if one checks the website for product description it states freeze protection from +12 to +16F !!!! Unfortunately, I couldn't reconcile all the different ratings, and when I read the "engine system caution" section I mistakenly thought I was good to -10F. This product is not sufficient to protect a boat winterized in North Carolina when the temp may get to 10 degrees for 24h or so once a winter. I have since purchased the -100 degree product (twice the PG) and this doesn't freeze in the freezer but costs twice as much (not nearly as much as my engine repair last spring, however). I don't understand why the -50 product (30% PG) found in so many stores for boat/RV protection is sold in NC.

Reviewed by 63 customers

Displaying reviews 1-10

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4.0

Good Price

By Jack

from Jamestown, RI

About Me Advanced

Verified Buyer

Pros

  • Easy to Use

Cons

    Best Uses

    • Engine

    Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

    Lower price than local hardware store!

    • Was this a gift?:
    • No
     
    5.0

    Works well

    By JG

    from RI

    Verified Buyer

    Pros

    • Protects Well

    Cons

      Best Uses

      • Engine

      Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

      Used several seasons, works well in engine.

       
      5.0

      have used before had good results.

      By finaddict

      from manchester nh

      About Me Advanced

      Verified Buyer

      Pros

      • Easy to Use
      • Protects Well

      Cons

        Best Uses

        • Engine
        • Indoor

        Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

        Used before good results,fair price

        • Was this a gift?:
        • No
         
        5.0

        Cheap and does the job

        By BillK

        from Boston, MA

        About Me Beginner

        Verified Buyer

        Pros

        • Easy to Use
        • Protects Well
        • Weather Proof

        Cons

          Best Uses

          • Engine
          • Indoor

          Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

          mail in rebate. cheap. It performs the job well

          • Was this a gift?:
          • No
           
          4.0

          Does what it is supposed to do

          By Pacific Lots

          from Key West, FL

          About Me Advanced

          Verified Buyer

          Pros

          • Easy to Use
          • Protects Well

          Cons

          • more expensive than other brands

          Best Uses

          • Engine

          Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

          This product worked great but I was a bit dismayed when I found the same temp coverage for $2 less per gallon at a nearby store.

          • Was this a gift?:
          • No
           
          5.0

          use all the time

          By t

          from manchester nh

          About Me Advanced

          Verified Buyer

          Pros

          • Easy to Use
          • Protects Well

          Cons

            Best Uses

            • Engine

            Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

            Winterize both engines

            • Was this a gift?:
            • No
             
            5.0

            Antifreeze

            By Steve Hilde

            from Baltimore, MD

            About Me Beginner

            Verified Buyer

            Pros

            • Easy to Use

            Cons

              Best Uses

              • Engine

              Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

              Good antifreeze. Bought a case of 6 gallons with my buddy. He used it on his Yamaha jet boat and I used it for my Mercury outboard.

              • Was this a gift?:
              • No
               
              5.0

              Excellent product use it every year .

              By Russ

              from New jersey

              About Me Advanced

              Verified Buyer

              Pros

              • Easy to Use
              • Protects Well
              • Visually Pleasing
              • Weather Proof

              Cons

                Best Uses

                • Engine
                • Indoor
                • Outdoor

                Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

                Winterize boat

                • Was this a gift?:
                • No
                 
                5.0

                Very good product. I've used it a coiple of times. This yue

                By Frank

                from WAkefield, MA

                About Me Casual/ Recreational

                Verified Buyer

                Pros

                  Cons

                    Best Uses

                    • Engine
                    • Outdoor

                    Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

                    You need it - go get some and winterize your boat.

                    • Was this a gift?:
                    • No
                     
                    5.0

                    Good for winterizing boat fresh water systems.

                    By Chris

                    from Edgewater, MD

                    About Me Advanced

                    Verified Buyer

                    Pros

                    • Easy to Use
                    • Protects Well

                    Cons

                      Best Uses

                      • Outdoor

                      Comments about Pure Oceans -50F Engine & Water System Antifreeze, Gallon:

                      I have been using the product for many years to winterize my boats fresh water system and have never had a water line freeze on me.

                      • Was this a gift?:
                      • No

                      Displaying reviews 1-10

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