During the driving seasons, I have NEVER used anything but top tier (93 octane). Never a problem in 16 years with any of the occasionally driven Vettes...NONE.
But, come winter...
The ONE year I didn't put an additive in the tank, I had goo plugging the jets of my (Valkyrie) motorcycle, AND standby generator - come spring.
I had similar issues in spite of (or because of??) Stabil (sp?) in my mower, and standby generator, leaf blower, pressure washer, and string trimmer. (My small engine mechanic told me to NEVER use Stabil. Use Sea Foam instead.)
I used to put a pint of Sea Foam in each of the Vette's tanks in the fall. But, because I make it a point to start them once a month all winter long, I've never had an issue, long as the tanks were filled with fresh fuel before storing them. So, for the last 5 winters, I didn't use anything in the tanks. They ALL fire right up and idle - as well as expected (given the cam overlap of a couple of 'em!
).
And, as a rule, I don't shut the fuel off on the mower or other small engines when storing over winter. That way the fuel will NOT evaporate in the carb jetting - and a little Sea Foam is in there for good measure...
So...
Sea Foam (winter storage insurance policy) in the small motors, and leave the fuel petcock open to prevent fuel from evaporating in the carbs(!).
No additives in the Vettes. A full tank of fresh (E10 ethanol) fuel in the fall, coupled with once a month starting/warming has worked fine for 8 years in a row.
Now, my bigger worry is RODENTS during winter storage.
(I hates mieses to pieces!)
Your mileage may vary!
03-12-2018
Re: Injector Cleaning Additive
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