1952henry Well-known member Apr 11, 2019 #21 Oxalic acid (found in wood bleach, such as Cabots, available in hardware stores) was the ingredient in GMs radiator flush 12-16 ounces with water. Followed of course by a baking soda flush.
Oxalic acid (found in wood bleach, such as Cabots, available in hardware stores) was the ingredient in GMs radiator flush 12-16 ounces with water. Followed of course by a baking soda flush.
