I have been running my Stihl chainsaw and what ever 2 stroke I have for 30 odd yrs on those little 6oz bottles from any where. Hardly buy the same brand twice. I add them to 2 gallons of gas. a rich 32:1. Never any fuel troubles. The Stihl specs 40:1 and other than a little smoke while running choked its OK. So far, no complaints from my 50: 1 Husqy weed wacker either. The new stuff is ashless, you gotta mix it purty strong to carbon up stuff.

Well, back in "The Olden Days", we used a half-pint of motor oil in a gallon of gas, and that mix worked in 95% of anything i used, in the two-cycle range! now, since the advent of better engineering, and better materials from which the engines, etc, are made, it was only natural to go to a better fuel formula-oil to gasoline mix. So-read what they recommend for your engine, and adhere to it! So--it takes multiple fuel containers--label each container, and instruct you wife and off-spring as to what goes where, and i'm quite sure you will have excellent results! A man called and asked me to come get his lawn mower for a spring tune-up. Before i could get there, we had a deep spring snow, but i went anyway. His son was blowing snow , but ran out of fuel (2-cycle). While he was looking for the can, his sister ran out,with a full can, filled the tank, grapped the starter rope, and got it started. (She wanted to use the machine, but her brother had grabbed it first!) I don't have to tell you what happened next, but here goes: BOOM, grate, clank--silence! I took it home as a gift, for parts! The can was not labeled! She got plain gasoline.

You know montesa, at this time, even with all the EPA restrictions and 2 cycle engines, I don't think smaller 2 strokes will ever be totally banned from new production. There is still too much of an advantage and power to weight ratio to warrant not to produce them in certain type of equipment. There are a few companies left ie Bombardier/Lear Jet, that have enough financial capabilities to stay ahead of the R&D in takes to keep the larger displacement engines running more efficiently and for the GREEN WIENERS, cleaner. I think if Toro/LawnBoy could have somehow redirected the intake/combustion, added fuel injection, manadated fully synthetic oil in their engines only, or added a catalytic convertor, they could have meet EPA regs. Did they want to spend the extra money to develop, would it make the every so light and easy to manuever mower more heavy and cumbersome? Probably some of the biggest reasons they chose not to. I'll buy and use 2 strokes as a first option as long as I can. If I ever have to resort to a 4cycle trimmer or chain saw, then I give up my power tools. They only engine I will want to drain a crankcase on will be larger mowers, cars, trucks, marine, etc. If this man can carry it, then in needs to be a 2 strokin' high revvin' long livin', 2 STROKE!!!

The 250 is a nice mid size saw. I have that model and am very pleased with it. Unfortunately I do not have nearly as much land as you do so I do not get to use it as often as I would like. It performs quite well for my needs. If you know you won't go any larger than 12" trees, that is a good size. I have heard others say that you should not go larger than an 18" bar on it. The saw just does not have enough power for 20". If you plan on regularly cutting some firewood, you might want to step up the size of the saw. I have not cut much firewood yet so I don't have any insight on that particular issue. Do check out the arboristsite forum. Plenty of information. Your question has been covered many times there. You only have to watch out for them talking you up to a monster saw :). You also should get some safety equipment such as chaps, hearing protection and helmet if you do not already have them. You will also need to buy chain oil. I like the Stihl oil as do many others (~$6/gallon). I highly recommend you buy a file and guide to sharpen your chain. You will know very quickly when your chain needs to be sharpened. With a little practice you can do it in a couple minutes. The SRM210 should be able to handle all your trimming needs. It sounds like you can make the FS90 a dedicated brushcutter. Have you considered a wheeled brushcutter like DR (I forget the other makes)? I am not sure how much they cost but they might make the job go quicker. Just a thought. Some on this forum wrote of a brush blade called a beaver blade. It looked like a blade that had a saw chain mounted to it. I have not purchased one but the idea looks good. It might make quicker work of your brush. Since you are planning on purchasing both a brushcutter and chainsaw. I can recommend the helmet system with integrated hearing protection and mesh face shield. It is comfortable enough that I wear it when I am running my trimmer. The mesh face shield really keeps everything out of your eyes. I purchased mine at www.baileys-online.com. They are a a real nice company to deal with. Very knowledgeable and they go out of their way to help you out. They deal with alot of pro arborists but highly appreciate the homeowner business. Whichever route you go with your equipment purchase, good dealer support should be high on your list of requirements. It sounds like from what you have written that the equipment will meet your needs. For trimmers and brushcutters, many also like Tanaka, Shindaiwa and Echo. Any reason not to get another Echo? For saws in the size range you are looking at, most recommendations go to Stihl, Husky and Dolmar. Good luck with your landscaping. It sounds like a nice little project. Take some pictures. You'll be amazed in a few years looking back on them and seeing the progress. Let us know what you end up with.