recommended grade of gasoline

[insightman]

I’m unaware of this and intrigued...educate me please. Is this a setting you program in somehow? Thanks!

See page 327 in the Owners Manual for this table:

 

[Richard_arch74]

Haven’t seen any reputable third party tests but from the MSD (petroleum distallates), it appears it’s at least replacing the higher volatile hydrocarbons that evaporate first. Anybody know if it’s doing anything else?
Other than Stabil’s claims of proprietary ingredients that protect against gum and varnish build up?
All I can find are internet (non testing lab) articles claiming fuel stabilizers work by preventing oxidation of the long alkyl chains into fatty acid esters. And of course you can believe everything on the Internet!
It has however been around for 50 years so it must be doing something positive.

Another product to take a look at is Star Tron by Starbrite. It is an additive that I have been using since early 2000's. Been using on my I/O MerCruiser with great results. No carb or engine problems running E10 for all those years.


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