I know there are a large percentage of you using Stihl Ultra as your 2-cycle oil. But, do you know that it may not be the most cost effective oil to be using in your business. Not to mention, Stihl Ultra has only a JASO FB rating while Amsoil Saber Professional is JASO FD. There is huge difference in the amount of detergency between these two oils. Detergency levels are related to the amount of sludge or carbon build-up in combustion engines. Kinda like the detergent in your laundry. Without it your clothes wouldn't be very clean. With it, you loosen the dirt and grime and is suspended in the water which eventually drains out. In the 2-cycle engine this is acheived with a cleaner (more complete) burn with virtually no carbon build-up. I have given out alot of samples of this oil recently here on LS and the users have posted results to back this up. Easier starting, quicker and smoother throttle response, less exhaust fumes and cooler running are always mentioned. Most users see at least two of these benefits at a time if not all of them. I recommend everyone to try this oil as I think you will be surprised when the fuel can is empty. Here is a price comparison also. These are Stihl & Amsoil list prices. Stihl Ultra 1 gal. mix = $1.99 for 2.6 oz. Amsoil Saber 1 gal. mix = $1.30 for 1.5 oz. Stihl Ultra 2.5 gal. mix = $3.50 for 6.4 oz. Amsoil Saber 2.5 gal mix = $2.10 for 3.5 oz. Stihl Ultra 1 gal jug = $62.00 Amsoil Saber 4 qts (gallon jugs not available) = $36.60 Now, throw in the fact that you could sign as a commercial account and the prices for Amsoil Saber are as follows. 1 gal. mix = $.90 2.5 gal. mix = $1.50 5 gal mix = $2.80 4 qts mix = $27.60 Buy in case quantities and save even more!!!! Sure you must add sales tax and shipping, but still much less than Ultra. All inquiries about commercial accounts are welcome.