* 1-gallon of virgin antifreeze in a 55 gallon
barrel
will lower the freeze point 2 degrees F.
* In a 55 gallon barrel - to add 1 inch of fluid it takes 1.75 gallons
* Liquid sodium hydroxide (Naoh) freezes at +55 F
* Granular or liquid form sodium hydroxide must be mixed with antifreeze and water. It then must be stirred into the recycled antifreeze to bring up the pH as a last resort (after adding 32 oz. of ARU fortifier)...Start out with 2 oz. then work your way up 1 oz. at a time..
* Pressure caps...for every pound of pressure that the system is pressurized the boiling point is raised 3 degrees...
* The proper way to dispose of used antifreeze recycling filter-elements is usually the same way that you dispose of used oil filters..
* Ethylene glycol is a much better "coolant" than propylene glycol...due to PG’s poor heat release properties..
* Low pH = acid.....High pH = base
* pH stands for "power of hydrogen ion concentration"
* Pure distilled water pH’s at 7.0
* The specific gravity of water is 1.00... the specific gravity of most ethylene glycol based antifreeze is 1.125 to 1.130...this means that you must agitate all premixed coolants (recycled or virgin) once a week or so, or you will wind up with a very strong freeze point at the bottom of the barrel and a very weak freeze point at the top. This won’t matter once the coolant has been put into the cooling system...once you start the motor it will mix for a uniform freezepoint anyway...
* Use small amounts of citric or phosphoric acid
to bring pH down
* Use small amounts of sodium or potassium hydroxide to bring pH up
* Muratic and hydrochloric acid will add chlorides to your formula..
* UP-DATE >>>Now-a-days, a pH of 9 in conventional antifreeze is too low because
you will fail the glassware test .. from now until futher notice always go between 9.5 and
11 pH...Don’t worry about lowering the pH of coolant until you hit 11.5 pH...then use
citric or phosphoric acid (phosphoric will drop pH faster)...mix it with water and
antifreeze 1 or 2 oz. at a time..then work down using 1/2 oz. at a time from there.
* We are finding that food coloring works almost as well as antifreeze dye to recolor recycled antifreeze...so far no drop in pH (but watch for it depending on the brand) you may need to use more, but at least you don’t have to stock buckets of antifreeze dye..
* You are always better off recycling from an open top drum...that way you can see the level of oil contamination, cigarette butts, bottle caps, etc...
* You will always get a prettier blend of recycled coolant if you pull from just under the top of the fluid level and follow the fluid level down with your inlet hose leaving the last few inch’s in the bottom of the drum (the worst of what is there will be settled out at the bottom)...it is critical that you do it this way if you are using the flocking agent !!
Request Recycling Services... Back To Home Page... Dealer Page ... email Hi-Tech