Raw Water Cooled Engines - Propylene glycol RV antifreeze with a rust inhibitor is approved for use in the raw water cooling system for cold weather storage purposes ONLY. Fresh Water Cooled (closed cooled) Engines ? If your engine is equipped with a closed cooling system, you should always use an appropriate mixture of Sierra Brand propylene glycol antifreeze and water in this system. Make sure to check the mixing ratio on the anti-freeze container.

PG is available (though often only by special order from any full-service Pharmacist. The cost varies from $5 to $8 per pint. Pharmacologically, it's used as a solvent for oral and injectable drugs.... It also has many uses as a chemical solvent, as well as being used in many cosmetics. PG is also available from many feed-stores, as it is used as a feed additive and a medical treatment for livestock. See similar questions...

Ethylene glycol and propylene glycol are chemically very similar and can be mixed without harming the cooling system. Ethylene glycol does have better heat transfer properties than propylene glycol. Adding propylene glycol does not make the ethylene glycol less toxic. No, it is never OK to neglect cooling system maintenance. Scale buildup and corrosion in radiators, for example, can cause overheating problems or radiator failure. See similar questions...

Propylene glycol is an emollient used in many types of medical care products, including those applied to the skin or taken internally. Propylene glycol is found in medical products such as cough syrups and skin care products. It is safe and imparts unique attributes when formulated into such products. See similar questions...

Propylene Glycol, the base fluid of Engine Ice Hi-Performance Coolant TM, meets or exceeds all ASTM, SAE, Government and Manufacturers standards. It also has NO statutes or health warnings from the Clean Air Act Amendments (CAAA), CERCLA (Superfund), Superfund Amendments & Reauthorization Act (SARA), Occupational Health & Safety Administration (OSHA), American Conference of Governmental Industrial Hygienists (ACGIH), Federal Health & Safety Administration (FHSA). See similar questions...

from cosmetics and household detergents to paints and automotive brake fluids." http://www.dow.com/propyleneglycol/index.htm Incomplete evaluations do not mean that a chemical is free from "human carcinogenic potential." -- barb See similar questions...

Propylene glycol enables our deodorants to be applied smoothly in a stick form and helps to stabilize the base of anti-microbial plant ingredients. We have researched glycerin as a substitute, and found that the glycerin acts as a moisture binder that encourages bacterial growth, which causes odor. Earth Science prides itself on making gentle products that are suitable for a wide range of skin types and sensitivities. Many of our loyal customers consider themselves chemically sensitive. See similar questions...

Ethylene glycol and propylene glycol are chemically similar. Ethylene glycol has the chemical formula C2H6O2. Propylene has the chemical formula C3H8O2. Ethylene glycol has a slightly higher boiling point than propylene glycol. Ethylene glycol is less expensive to produce and is more widely used. Propylene glycol is less toxic. Both propylene glycol and ethylene glycol have similar biodegradability and will eventually break down into nontoxic byproducts. See similar questions...

Tell your supplier to include corrosion inhibitors to protect copper and iron. Also, make sure they add a colorant to the glycol so that any leakage/spillage can be detected. See similar questions...

Propylene glycol is much different than ethylene glycol. The term "glycol" actually refers to organic chemical structures that contain twin hydroxyl groups on neighboring carbon atoms. This common functional group is present in many different kinds of molecules. For example, all food carbohydrates contain glycol groups. Ethylene glycol is a toxic glycol used extensively in aqueous cooling systems (such as automotive "antifreeze" to prevent freezing in cold weather). See similar questions...

We recommend not using over a 50/50 mix. Under no circumstances can the product contain a petroleum base. See similar questions...

Use a 50% solution of glycol based antifreeze solution to water for a system that must operate at very low temperatures. If only freeze protection is needed, a 20-25% solution is usually adequate because the more dilute solution forms a non rigid slush that will not flow well but will not damage the tubing. See similar questions...

Propylene glycol is an ingredient used in numerous cosmetics and toiletries. It is also used as a powerful solvent to prevent creams from drying out. Propylene glycol is a petrochemical derivative and has been shown to cause allergies. See similar questions...

The results will be less than 1 color block conservative. Ethylene Glycol provides slightly higher freeze protection at like concentrations, and therefore contributes to a lower freeze point protection. Differences of less than 1 color block will result. See similar questions...

Antifreeze by itself has an insufficient boil over and freeze protection ability. Mixture with water provides the Freeze protection and boil over protection. See similar questions...

I live in Florida, what should the percent glycol be in the antifreeze I use? I will make an occasional trip to Cincinnati in the winter. See similar questions...

The easiest way to test antifreeze for corrosion protection is with test strips. There are other test strips than freeze point that can determine if the antifreeze coolant is corrosive and/or has life left to protect the engine. See similar questions...

Engine coolant is a generic term used to describe fluids that remove heat from an engine. Antifreeze is a more specific term used to describe products used to provide protection against freezing. Many people use these terms interchangeably, as we also do in this FAQ. Antifreeze (engine coolant) performs several functions in addition to providing freeze protection. Antifreeze contains chemicals that inhibit corrosion and scale formation in the engine and radiator. See similar questions...