A method for manufacturing antifreeze comprising manufacturing biodiesel; collecting the byproduct glycerin of such biodiesel manufacture; adding water to such glycerin to generate at least one mixture of glycerin and water; adding at least one anticorrosive additive to such at least one mixture of glycerin and water to generate at least one antifreeze; and placing such at least one antifreeze into at least one automotive cooling system. The antifreeze viscosity is adapted to be within the viscosity range between propylene-glycol-based antifreeze and ethylene-glycol-based antifreeze. Also disclosed are 'blended' biodiesel-derived glycerin/ethylene glycol coolant/antifreeze products and biodiesel-derived glycerin/propylene glycol coolant/antifreeze products. Marketing methods are also disclosed, along with material compositions.

A method for manufacturing antifreeze comprising manufacturing biodiesel; collecting the byproduct glycerin of such biodiesel manufacture; adding water to such glycerin to generate at least one mixture of glycerin and water; adding at least one anticorrosive additive to such at least one mixture of glycerin and water to generate at least one antifreeze; and placing such at least one antifreeze into at least one automotive cooling system. The antifreeze viscosity is adapted to be within the viscosity range between propylene-glycol-based antifreeze and ethylene-glycol-based antifreeze. Also disclosed are "blended" biodiesel-derived glycerin/ethylene glycol coolant/antifreeze products and biodiesel-derived glycerin/propylene glycol coolant/antifreeze products. Marketing methods are also disclosed, along with material compositions.

A portable purifying system for improved filtering and/or separating of cleaning solutions such as solvents, particularly those used in parts washers. The purifying system utilizes a removable reservoir to provide a smaller reservoir within a larger reservoir such as a parts washer. The portable purifying system provides an apparatus and method of use to perform the following steps: using re-circulating solvent from the larger reservoir, washing oily parts in such manner that oily residue from the washed parts is deposited in the smaller reservoir; separating cleaner portions of solvent from dirtier portions of solvent within the smaller reservoir using density differences to separate by gravity action cleaner portions from dirtier portions; moving the cleaner portions of solvent into the larger reservoir; and periodically emptying and cleaning the smaller reservoir.

Comprehensive transportation fuel additive compositions are designed to improve low-quality transportation fuels, particularly for underdeveloped countries. A preferred formula of the present invention comprises at least one octane booster, at least one combustion modifier, at least one corrosion inhibitor, at least one water demulsifier, at least one detergent, at least one solvent, at least one fuel stabilizer, at least one biocide, and at least one fuel lubricant. Under appropriate circumstances, such as, for example, use in cold climates, the preferred formula may also comprise at least one low temperature additive. The comprehensive fuel additives of the present invention have a novel capability of substantially correcting all of the detrimental aspects of low-quality transportation fuel, thereby lowering pollution, improving fuel efficiency, and reducing vehicle maintenance costs. The comprehensive fuel additive formula is preferably tailored and adjusted to meet local needs. Different, but closely related, comprehensive fuel additive formulas are used for motor fuels and diesel fuels.

Comprehensive transportation fuel additive compositions are designed to improve low-quality transportation fuels, particularly for underdeveloped countries. A preferred formula of the present invention comprises at least one octane booster, at least one combustion modifier, at least one corrosion inhibitor, at least one water demulsifier, at least one detergent, at least one solvent, at least one fuel stabilizer, at least one biocide, and at least one fuel lubricant. Under appropriate circumstances, such as, for example, use in cold climates, the preferred formula may also comprise at least one low temperature additive. The comprehensive fuel additives of the present invention have a novel capability of substantially correcting all of the detrimental aspects of low-quality transportation fuel, thereby lowering pollution, improving fuel efficiency, and reducing vehicle maintenance costs. The comprehensive fuel additive formula is preferably tailored and adjusted to meet local needs. Different, but closely related, comprehensive fuel additive formulas are used for motor fuels and diesel fuels.

A method and system for the prevention of corrosion of objects located close to a wet cell storage battery caused by evaporation, and subsequent condensation, of electrolyte from a wet cell storage battery. Convenient methods for installation and removal of the system are included. Additionally, convenient and safe storage methods are also provided.