Our experience with the Prestone Kit is fine, but the plastic material used
oxidizes within several years and need to be replaced or discarded.
> I can not imagine what you are trying to do with that thing. A flush kit
> is used under water pressure to flush water through the engine and
> radiators. To use it you will need to have the drain valve from the
> radiator open and probably the radiator cap off. Be careful as the
> radiator can
> not stand much over 9 PSI without ballooning. The city water pressure is
> 30 to 50 PSI and can be higher in some cases.
>
> I can not imagine how you are going to get antifreeze in the system with
> that flush kit.
>
> The easiest thing to do is to open the radiator cap and fill it that way.
> That is why the rad1ator cap is there.
>
> If you are trying to flush the system then maybe you want to use it for
> that. I suggest that you do not leave it installed when you are finished.
> I
> have seen 2 of the Prestone ones leak when left installed in an engine
> heater line.
>
> Also if you are using it in a heater line be aware that the heater control
> shuts off the coolant flow with a vacuum controlled valve in line. With
> the valve off there could be as high as city water pressure in that line.
> Then say By Bye heater core.
>
> I personally would not use it.
>
> If you want to flush it, on a cold engine. Follow the instructions on the
> radiator flush can and fill the system. Keep in mind that you have a 6
> gallon cooling system and will probably need 2 cans of flush.
>
> When you are finished flushing, drain the radiator and then with the drain
> still open simply open the radiator drain and stick a garden hose in the
> radiator fill by removing the radiator cap. Turn the hose on and wait for
> the radiator to fill. Then start the engine with the hose still running
> and adjust the flow rate at the radiator fill to keep water flowing to the
> point that it is just SLIGHTLY overfilling at the radiator fill. Let it
> run until you are happy with the water coming out of the drain is clean.
> Probably about 30 minutes as you need to get all of that flush out of the
> system. Then remove the hose and let the radiator drain completely again.
>
> You will need 3 gallons of 100% antifreeze. Close the radiator drain and
> pour in the 100% antifreeze. Then add water as necessary to finish filling
> and to top it off later. I use distilled water which is $.88 per gallon
> at Walmart. You will not be able get 6 gallons back in because you will
> never be able to drain the system good enough to get all of the old water
> out. Expect to use somewhere between 3 and 4 gallons of anti-freeze and
> water. That is why I said to put the 3 gallons of 100% in first before
> adding water. Do not forget to fill the overflow bottle also. It should be
> flushed by hand at the same time that you are doing the rest of the system.
>
> I'm not sure why you are doing all of this, especially the flushing. I
> thought that you were just adding 50/50 antifreeze to top it off. I also
> suggest adding 1 can of water pump lubricant when you are filling. It
> helps keep the water pump seals in place longer.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
