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.
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.
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. 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.
Once you have enough octane to prevent detonation, higher octane does not mean higher power, at least not without making physical changes to the engine. Your old gas had ethanol or some other fuel oxygenate in it, and your higher octane fuel did not, or vice-versa. One reason for using higher than the minimum rated octane for your engine: most automotive gas loses octane as it ages.
87 octane stihl chainsaw Related Question:
Can you use 87 octane in a STIHL chainsaw?
STIHL recommends that customers use a minimum of 89 octane fuel. If a customer chooses to use a 91 or 93 octane fuel, no damage to the engine will result. However, using an 87 octane fuel could lead to serious engine damage.
Can you use premium gas in a STIHL 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.
What kind of fuel does a STIHL chainsaw use?
Unleaded gasoline with a minimum octane rating of 89 is recommended. A lower octane can cause some issues, such as increased engine temperature, increased piston seizures, and engine damage. Stihl offers 2-cycle oils made especially for Stihl chainsaws. Premium quality 2-cycle fuels provide protection for your engine.
Should I use high octane gas in my chainsaw?
So running a higher octane than you need has no effect on the engine, it just burns normally. You just pay a few cents more per gallon for the higher grade gas, so it’s a waste of money in your car. But if you want to use it for the peace of mind of not having ethanol mixed in, then go for it.
Can you run 87 in 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. This is not enough.
Can you use avgas in a chainsaw?
Switched to AVGAS 100 a year + ago and the lawn mower and chainsaw love it! No more starting problems and they run with full power. Just a few pennies more per gallon and its worth it, by a whole bunch, not to have engine problems.
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 you use MotoMix in STIHL chainsaw?
The fuel tank should be emptied. Run the engine until the fuel system is dry (Warning! Do not operate the throttle, run the equipment only at idle speed until the engine stops!). STIHL recommends the use of STIHL MotoMix® premixed fuel which is pre-mixed with STIHL HP Ultra synthetic oil.
What happens if you put regular gas in a chainsaw?
If straight gas is used, it can damage and ruin the piston and crankcase within a minute, as the gas doesn’t take long to burn out these sensitive parts. Drain the tank immediately into a separate fuel container.
What octane is Trufuel?
It combines 92+ octane, ethanol-free premium fuel, pure synthetic oil that exceeds test requirements for ISO-L-EGD, API TC and JASO FD and a proprietary additive package that includes an advanced stabilizer and innovative friction modifier.
Are all STIHL chainsaws 2 stroke?
Many STIHL hand-held power-tools use 2-stroke combustion engines but some chainsaws, hedge trimmers, grass trimmers and other tools use engines with 2-MIX technology – so what’s the difference and what does it mean for you when you are using the tools?
Can you use Husqvarna oil in STIHL?
Can I Use A Husqvarna Chain Oil On A Stihl? The Husqvarna premium bar and chain oil is made of high quality materials: Totally suitable for use with all brands of gas-powered Stihls and electric Makita chainsaws.
What fuel should I put in my chainsaw?
A good quality unleaded fuel is needed. Be sure to use 89 octane or higher unleaded fuel. For best results, use Husqvarna brand two-stroke engine oil that if FD certified. Always mix gasoline and oil in a clean fuel container, not in the chainsaw’s fuel tank.
Should I run non ethanol gas in my chainsaw?
However, when you’re using gas with ethanol mixture in your outdoor power equipment, like lawn mowers, chainsaws, trimmers and leaf blowers, you run the risk of engine damage and incurring costly repairs. You should be using ethanol free gas in your small engine outdoor power equipment.
Can STIHL use E10 fuel?
As a rule, E10 fuel is compatible with all STIHL chain saws and power tools, as well as VIKING gardening tools with engines by Briggs & Stratton, Kawasaki and Kohler.