Stihl Synthetic Two-Stroke Oil

Joined
Jul 16, 2009
Messages
93
Location
West Virginia
The local Stihl dealer tells me that once I switch from the old style oil (orange bottle) to the newer synthetic (white bottle) that I cannot switch back or engine damage will occur. Is there any validity to this, or is it just another oil myth?
 
Joined
Jul 20, 2008
Messages
931
Location
Michigan
I was told the same. In a 2-cycle engine once one has gone to synthetic you have got to stick it. No oging back to conventional. Wonder why?
 
Joined
Jul 8, 2009
Messages
242
Location
Florida
Why would you want to switch back to dino oil? My sons run Stihl power equipment exclusively. They had to have two of the string trimmers de carbed on dino oil. They converted to Amsoil 100 to 1 mix with absolutely zero carbon issues. They have 2.5 years of service on the older trimmers.
 
Joined
Feb 21, 2004
Messages
2,149
Location
USA
 Originally Posted By: wvrailroader
The local Stihl dealer tells me that once I switch from the old style oil (orange bottle) to the newer synthetic (white bottle) that I cannot switch back or engine damage will occur. Is there any validity to this, or is it just another oil myth?
You can switch back, it won't damage your engine. But why would you want to switch back when using a 2cycle synthetic oil. Less headache as less build up. Personally I use the Amsoil 2 cycle oil at 100:1. Serves me well.
 
Joined
Oct 28, 2002
Messages
48,000
Location
Everson WA - Pacific NW USA
 Originally Posted By: wvrailroader
The local Stihl dealer tells me that once I switch from the old style oil (orange bottle) to the newer synthetic (white bottle) that I cannot switch back or engine damage will occur. Is there any validity to this, or is it just another oil myth?
He must make a better margin on the synthetic. You can switch whenever you want, however if you make large changes in your oil ratio, you might want to retune the engine.
 
Joined
Jan 23, 2008
Messages
438
Location
Ohio
 Originally Posted By: wvrailroader
The local Stihl dealer tells me that once I switch from the old style oil (orange bottle) to the newer synthetic (white bottle) that I cannot switch back or engine damage will occur. Is there any validity to this, or is it just another oil myth?
Wow, I use the Stihl Ultra Syn, but would not hesistate to use the dino in a pinch..... and have done so while working with guys in the field. Keep the air filter clean, proper storage and keeping the high end mixture rich enough, are more important things to worry about.
 
Joined
Sep 17, 2007
Messages
30
Location
Latrobe PA
I have used the orange bottle in my stihl backpack blower since the day I bought it in 1997, its never been touched!,it still starts on the 3rd pull,just like it did when it was new.
 
Top