Question

when should the engine cooling system iron cleaner be used?
a) at every cooling system flush
b) whenever the coolant is being topped off
c) only when the wsm or a tsb calls for it
d) when the customer asks for it

Explanation:

Engine cooling system iron - cleaner is a specialized product and should be used as per the manufacturer's service manual (WSM) or technical service bulletins (TSB) which provide specific guidelines for its application. Using it at every flush or when topping off coolant is unnecessary and using it just because a customer asks may not be in line with proper maintenance procedures.

Answer:

C) Only when the WSM or a TSB calls for it