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This is the original ECF72 color.
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Car engine waiting to be flush with ECF72.
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Dirty oil drained out from car engine.
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ECF72 color after flushing. On the right is 1st
flush, left bottle is 2nd flush. Sludge, carbon deposits, metal dust and harmful particles, all flushed out from the engine.
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Engine is flushed 2 times, 15 minutes
each, with engine running at idle speed.
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Notice the sludge & other deposits that is still stuck to the wall
of the right bottle (1st flush). 2nd bottle
has less sludge and oxidised carbon.
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