- Provides burst protection to -50°F (-46°C) and freeze protection 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.
Product Specs
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REVIEW SNAPSHOT®
by PowerReviewsPros
- Easy to use (4)
- Protects well (4)
Cons
Best Uses
- Engine (5)
- Reviewer Profile:
- Casual/ recreational (5)
Reviewed by 6 customers
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Displaying reviews 1-6
Pros
Cons
- Ineffective
Best Uses
Comments about 50F Engine & Water System Antifreeze:
Just went down to the boat today to find frozen water in the bilge and in the head. In the head, the pink water was frozen to a slush after less than two days of below freezing temperatures. The bildge may have been diluted, but the water in the head was pure antifreeze. I am now concerned that the engine and other areas with water are not protected.
Pros
- Easy to Use
- Protects Well
Cons
Best Uses
- Engine
Comments about 50F Engine & Water System Antifreeze:
The antifreeze is a fine product and well worth the price. I am a northeast boater in Long Island and have had several boats throughout the years. Presently I own a 1979 Penn Yan with an 88 Merc engine. The antifreeze is an integral part to winterizing a boat and this year I am winterizing the boat on December 2. Yes, a little late but better late than never and of course it is before the first freeze. Please make sure you winterize your boat!
Pros
- Protects Well
Cons
Best Uses
- Engine
Comments about 50F Engine & Water System Antifreeze:
Used it last year and again this year.
Pros
- Easy to Use
- Protects Well
Cons
Best Uses
- Engine
Comments about 50F Engine & Water System Antifreeze:
Used to winterize water system.
Pros
- Easy to Use
Cons
Best Uses
- Engine
Comments about 50F Engine & Water System Antifreeze:
I have used this anti freeze for years and I have found that West Marine has the best deals. I use it for the engine, water system and the waste system and it works great.
Service and delivery comments:
Ordered it from home and it was delivered in a few days. Can't beat that.
Pros
- Easy to Use
- Protects Well
Cons
Best Uses
- Engine
- Indoor
Comments about 50F Engine & Water System Antifreeze:
GREATE PRODUCT FOR THE ENGINE AND THE WATER SYSTEM
Displaying reviews 1-6











Merchant response: Rob -- We can understand your concern and we'd really like to help. Please consider contacting our Technical Support line at cattech@westmarine to see what we can do to assist.