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Discussion Starter · #1 ·
I have 2 old Mac chain saws. A Mac 610, and an Eager Beaver.
Both books say to use leaded fuel, 40:1 mix with Mac Custom Lube.
Since I have 3 Stihl devices, 2 trimmers, 1 saw, I have used mid-grade no-lead fuel with the (Stihl) 50:1 mix. Do you think that will hurt the Macs? I really don't want to keep another 2 cycle mix.
 

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Those must be some old saws since there hasn't been leaded fuel since the 70's however I believe that they still sell a lead substitute you could just add a small ammount to each tank when you use the saw
 

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Discussion Starter · #3 ·
Those must be some old saws since there hasn't been leaded fuel since the 70's however I believe that they still sell a lead substitute you could just add a small ammount to each tank when you use the saw
Maybe that is what I should do. Add that to the Stiehl mix.
 
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