Use plastic cups to measure equal amounts dont just guess it will not go off .
Then put your equal amounts in to and clean tub and mix them till they turn a milky yellow use a good strong Black bag make sure theres no holes in it then pure the mix in the bag .when u get in the car try not to stand on the bag you could put a hole in it. I would suggest use 3 cups of each to start and see how far it goes its better to ad a little then a lot and it over flows.
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