Re:That is silly!
If you tried running this oil or some synthetics as heavy as one would normally mix, say 32:1, 4oz of oil per 1 gallon of gas, the engine simply can not consume that concentration of oil per gas ratio which would lead to poor performance and oily residue spewing out of any orifice it could. .
That is silly. I've been running 20 to 1 in everything I own - be it 60 years old or 1 year old. I run 20-1 Amsoil synthetic in my new 51 and 64 cc Dolmars and my 56 cc EFCOs. Also in my little Echo, 55 cc Husqvarna, and cheap 55 cc Poulans. Also in all my older Sthils, e.g. 045 Super, 041 super, 041G, 040, S10, 08S, etc. I cut hardwood all summer and fall. I've had zero problems. No "poor performance" or "oily residue" as you claim.
More oil gives more protection. That has been proven in lab testing and is not hearsay as some allude to here. New saws run "rich" mixtures with less oil to meet emissions regs - that's all. And they have to be built tougher to sustain it.
Now - carbs work by volume so putting more oil in the mix results in less gas per volume. So, more oil in the mix sometimes requires opening up the main jet a bit since more oil means a "leaner" mix, not "richer."
I'm not saying anyone needs more oil then recommended. But to say more oil causes problems is kind of ridiculous unless you go way overboard. If a saw can last X amount of years with 50 to 1, chances are it will last even longer with with a heavier mix. There have been countless metal wear-scar tests proving this.
By the way, my Stihl 045 Super and 041 Super have both run 20 t0 1 since new and that was over 25 years ago. Both still have the original Bosch spark plugs.
Tractors: IH B275 (2), Case VAC,/VAC-14(2), Case DC (3) Ford 641, Shaw R12, MF35, Ferg TO35, Bolens Ridemaster, AC HD4/ HD6 dozer, Oliver HG dozer, Oliver OC46 crawler, Deere 300B TLB/ 1010 crawler, Ford 4000 TLB, Pettibone TLB, IH 3414 TLB
Garden tractors (over 100 ).
Chainsaws: Remington Mall (2), Sthil S10, 040, 041G, 045 Super, 051, 041 Super; Dolmar/Makita DCS510 and DCS6401, Echo(3), EFCO/Deere CS56 (3), Poulan Pro (4), Husqvarna 455, Hoe, Lombard 2 man, Homelites (over 20).