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Sea Foam® Motor Treatment Overview & Video Source: by seafoamsales.com
"To control moisture buildup in oil, add 1½ oz. Sea Foam to each quart of oil. Sea foam will prevent phase separation of moisture that accumulates in oil. Moisture will evaporate under the heat of the crank case. Change oil and filter when dirty.
To clean the PCV system, add 1½ oz. Sea Foam to each quart of oil. It will slowly re-liquefy old oil varnish residue deposits as you drive.
Possible performance improvements include:
Increased RPM
Increased vacuum
Increased compression
To clean oil rings and lifters, add 1½ oz. Sea Foam to each quart of oil. Sea Foam will slowly re-liquefy the old oil varnish residue that builds up on lifters and rings and prevents them from functioning normally. This process can be done as part of a pre service cleaning by adding the Sea Foam to the oil at least 30 miles before the next oil change interval. OR it can be done as a preventative maintenance process without changing the oil. You can leave Sea Foam in the oil indefinitely as long as the oil is clean.
The addition of a high-detergent oil like Sea Foam may cause the oil to become dirty faster than normal as buildup oil residue and contamination are cleaned. Check the oil at regular intervals and when it gets dirty, change it.
To clean built-up oil residues and contamination from the crank case, add 1½ oz. Sea Foam to each quart of engine oil. Sea Foam will slowly re-liquefy residues and suspend contaminants for easy removal. Change oil and replace filter when dirty.
http://www.seafoamsales.com/how-to-use-sea-foam-motor-treatment.html
of course, the instructions on how much to add to each Quart of oil is repetitive so use only 1½ oz. per qt; so 6 quarts of oil = 9 oz of Seafoam,