Yamalube Ring Free Plus

[SHOdded]

Typically used in marine applications, should work just fine in automobiles.  1 oz/10 gallons for maintenance, 2 oz/gallon about 5 gallons worth for SHOCK treatment (but must change oil & filter after it runs out).  About $16 per 12 oz bottle.
https://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Dautomotive&field-keywords=Yamaha+Yamalube+Ring+Free+

http://maintenance.yamahaoutboards.com/fuel-fuel-system/
http://yamahaoutboards.com/site/search/ring%20free

Check out some YT vids:
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