The guys at gold eagle were giving you a SNOWJOB!!! There are probably 2 different specs of oil and the packaging company (gold eagle) puts 2 different oils in 20 different packages... They probably tell people that CRAP about adding the MAGIC POWDER so you don't just buy ACME brand for HALF THE PRICE as YAMALUBE!!!! it's kinda like going to the car dealer to buy air filters for your auto... When I used to work for a FORD dealer,,, you vould buy spark plugs from the daler with BLUE stripes on them (factory plugs) and they WERE DIFFERENT than the plugs at the parts store (different grading system),, YAMAHA DOES HAVE THEIR OWN SPECS on oil... They give their specs to OIL companies and the oil companies QUOTE THEM A PRICE on fufilling their contract... CITGO may have a 20 year contract with YAMAHA to produce JASO??? WHATEVER spec Yamaha specifies.... You have to understand that CRUDE OIL is "inherently biodegradable" YES,,, in a FEW HUNDRED years it MAY degrade, but the enviormental destruction whle its" up here" they don't seem to elaborate on..... DAMAN,,, you and I need to sit down at STARBUCKS and have a LONG TALK about oil in general.. I don't disclose additive packages or even talk about NEW products on the "market" because I GIVE MY name and address and phone number on this website.. I don't need attorneys from EXXON MOBIL or BP threatening to slap lawsuits on me for anything.... DAMAN,,, I could tell you how to LEVEL YOUR HOME (and neighbors homes too) with a 90 lb bag of (ammonium nitrate) LAWN FERTILIZER and a BOX of Mr Bubble!!!!!! I DONT NEED the AUTHORITIES breaking down my door and snatching my computers!!!!! GO SMELL a bottle of YAMALUBE when you first open the container and see if you can smell an ammonia smell???? Moreso than likely AMMONIUM CHLORIDE ( pay atention now!!!) ( I'll keep it simple enough),,,,, ammonium choride (were looking for the CHLORENE correlation) and METHYL ALCOHOL EQUALS WHAT???????? chlorene+alcohol=???????? I told you a few weeks ago!!!! Thats why GOLD EAGLE does NOT recommend HEET in 2 stroke motors!!! (that was a hint)