80 Quattro L5-2309cc 2.3L SOHC (NG) (1988)
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Paint: All Technical Service Bulletins
Step 2: Neutralization
The continuing effect of the acid must be stopped by neutralizing.
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mix a solution of baking soda and water (4 tablespoons per gallon) and stir until completely dissolved
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apply solution to all affected areas and let stand for a few minutes before rinsing off with clear water
Commercial neutralizing products such as "Blue Max" by Car Brite(R) also work well.