I might add that this is the first time I have seen a OPE market an ashless oil for air cooled equipment.
Stihl might have been smart to have talked to some other OEM's like the snowmobile and jetski makers that went down the same road with poor results in the early 90's
Howdy-
Yes BW, I have a tough time in my head accepting the ashless versus something low-ash, I am certain Stihl did in-house testing (as shown in the article). Are base oils are improved to the point where the oil is the best combination of clean operating and protection ? (outside of a racing 2 stroke kart)
http://www.stihlusa.com/WebContent/CMSFileLibrary/MSDS/Stihl_HP_Ultra.pdf
Verifying on my $99 leaf blower using Stihl Ultra.
I use 20:1 and tune carb for this ratio, no carbon build at all, and on the 3rd year Stihl Ultra, all OK.
I can't prove this- but I believe from some older MSDS sheets - that Echo Red Armor is ashless (see the corrosion inhibitor).
Rated jaso like stihl ultra. So maybe ashless no longer means outboard motors only?
http://www.shindaiwa-usa.com/getattachment/9ee40453-a8f5-4647-988b-b20ebe5afe03
http://additives.shamrockoils.com/l...ibitor/rust-and-corrosion-inhibitor-1?print=1
Any corrections or info appreciated !