I’ve found two gas stations in town that have 93 octane gas without ethanol. I’m happy to find gas without ethanol but I’m worried about the 93 octane. Hi Test gas burns just a little slower and does not explode like low octane gas can.
I cut almost everyday, as I run a tree service, I run mid grade 89 octane mixed at the 50:1 that STIHL recomends on the bottle. They all have come back to the plain vanilla mix of mid grade gas mixed at 50:1 All this being said the company VP that makes race gas and other fuels has a new product called SEF, I would try it if it does not cost much more than what I do now. They also have the gas pre-mixed at 50:1 for use in 2 cycle engines…..
The focus of the presentation is not to make you a chemist, but rather to explain in simple detail what is in fuels, how to properly handle and store fuel, and to give you an understanding of the new fuels of today. Higher octane fuel may contain other additives that may enhance the fuels’ stability, and fuel system cleanliness, particularly in automobiles. Winter fuel will vaporize at approximately 34°C and summer fuel will vaporize at approximately 45°C. Therefore, on a warm day of 28°C and some added heat from the running engine, winter fuel may become active or percolate in the fuel tank and could vapour lock in the fuel lines or carburetor.
Both brands of pro saws are designed to burn fuel rated at 89 octane or higher. Some pro saw users don’t realize that low octane fuel not only reduces a pro saw’s performance, but can damage its engine. The only thing you really need to know about octane is today’s pro saws need fuel with a minimum octane of 89. The chemical makeup of fuel can change even if you always buy the same fuel from the same source. An even better way to store a saw engine is to remove the fuel as described, and then partially fill the tank with a product like 50 Fuel. 50 Fuel is stabilized unoxygenated fuel that will not go bad for a year or more. Once fuel is mixed, use all the fuel in a container before adding any more.
A 16:1 mix engine might survive an encounter with this ‘contamination’, but a 32:1 of a 40 – 50:1 would probably sustain damage form insuffecient lubrication, using this fuel. For the 4 cycle engine users, Gasohol is hydroscopic – that is, it attracts moisture. If you use Gasohol in an auto or truck, you will get a 10% loss of engine power, as well as up to a 20% loss of fuel economy.
93 octane in chainsaw Related Question:
Can I use 93 octane in my chainsaw?
Hi Octane gasoline does not run hotter, as most people think. It actually runs cooler. Using 93 in the Poulan, won’t hurt it, but it won’t help it either. In fact it may cause the exhaust port and muffler screens to carbon up quicker, due to the lowered temperature.
Can I use premium gas in my chainsaw?
To start, both Stihl and Husqvarna recommend the use of high octane unleaded gasoline. Both brands of pro saws are designed to burn fuel rated at 89 octane or higher. Most regular grade fuel has an octane rating of about 87.
Can you use 93 octane in a 2 stroke?
Any fuel type between 87-octane and the 92-octane will work just fine depending on the type of motocross bike you own. If you own a 4 stroke, for example, the 82-octane works just fine, but for a 2-stroke, you should go for the ethanol-free higher octanes (92 and 93) because the lower octanes tend to detonate.
What octane should you run in a chainsaw?
Use a minimum of 89 octane gasoline and always use fresh fuel. Only buy enough gasoline that you can easily use up within a two- month period. For air-cooled, two-cycle engines, use a quality mix oil that meets the engine manufacturer’s recommendations.