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Technical Reference

FAQs - Coolant Filtration

Q: What types of coolant cleaners / flushes Q: What does the additive actually do while
should be used? circulating in the coolant system?

Original equipment engine suppliers should be consulted In a clean, properly treated system, the additive physically
to determine what cleaning/flushing products they coats the metal components and protects them from scale
recommend for use in their systems build up, corrosion and cavitation erosion (liner pitting).
Reference FMC TSB 88-1R2

Q: If I change vehicles or equipment, can I
use up my existing filters with SCA’s? Q: Which brand of antifreeze is low silicate
type?
The total capacity of the coolant system is the sole
determining factor as to which filter with SCA’s is to be Any antifreeze that meets GM-6038M or ASTM D-4985
used. If the new system’s capacity matches the usage specifications is considered low silicate antifreeze.
specifications of the filters you already have, the antifreeze
being used is suitable for use with the filters in question
and the filters are still in their original factory packaging,
they can be used.

Q: How do I find out what the total coolant
capacity of my system is?

The original equipment vehicle, engine or equipment
ENGINE LIQUID FILTRATION TECHNICAL REFERENCE
manufacturer has this information available.

Q: Do supplemental coolant products work
with recycled antifreeze?
The vacuum distillation recycling method is the only
method accepted by original equipment manufacturers.
Some processes return the antifreeze to the customer with
SCA’s already added. Before installing any products on the
systems using recycled antifreeze, you must know whether
it contains any SCA’s. If it does, an additive free filter is all
that is needed until the first service interval is reached. At
this point to properly treat the system, you must know what
type of SCA was used by the recycler.

Q: Do you really need to test between
service intervals?
Yes. Leaks in the system could develop, other components
that could allow contamination into the coolant system
could fail, foreign substances or incompatible fluids could
be introduced to the system or coolant system components
such as the thermostat or water pump could fail. All of these
situations will directly affect the ability of a properly treated
coolant system to perform correctly. Periodic testing with
test strips can help avoid the potentially catastrophic results
of a system that is not protected.

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