What is the difference between the valves used in these two No Roll kits?
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532252 no-rol and a 1552294 no-rol?
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I am only making a SWAG here.old time brake versus newer formulas might need a change in rubber formulas. when the National Guard switched to Silicone fluid it was a total disaster,all the hydrovacs had to be replaced and most wheel and master cylinders had to be replaced. the supply system was unable to meet demand for new stock and rebuilding went into high gear. through the official grape vine we heard the old rubber compounds werent compatible with new fluid like someone thought! I still have nightmares of pallets of wheel and master cyilnders waiting to be refurbished. Luck Doofus
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