If you are low on fuel, go ahead and fill up. Hydrocarbons are non-polar. A consortium of gasoline companies has banded to sell high-quality gasoline using the industry-wide trademark Top Tier.
Most engines for good mowers and snowblowers are four-stroke. Injector cleanliness is crucial for proper operation. Older cars without knock sensors would suffer damage from continuous use of regular gas in a car meant for premium. Pitting and Cavitation: The new material is a soft solid that precipitates out of the fuel and can rapidly clog filters or create engine deposits.
These water droplets impact a small area with great force, causing surface fatigue and erosion. If free water is present microbial growth can proliferate, creating slimes that foul your fuel and acids that corrode your tank and fuel system.
Premium gasoline helps some not all engines develop more horsepower.
Etching is caused by water-induced fuel degradation which produces hydrogen sulfide and sulfuric acid that "eat" metal surfaces. Top Tier Gas. What about using regular in a vehicle that calls for premium?
The fuel likely came from a distributor servicing multiple stations and instances of bad gas — water in the fuel, or regular sold as premium — are still small. Gasoline all smells the same. Cavitation is caused by vapor bubbles rapidly contracting imploding when exposed to sudden high pressure, which causes them to condense back into a liquid.