can Synthetic be use in new engine?

Discussion in 'Lawn Mowing' started by s2000zr, Jun 3, 2010.

  1. s2000zr

    s2000zr LawnSite Member
    Posts: 23

    whats the recommend way to break in a new eb802 engine. I got some stihl synthetic mix at 50:1, can i use that. Or would it be better to use dino oil?
     
  2. Richard Martin

    Richard Martin LawnSite Fanatic
    Posts: 14,700

    You can use it right from the start but I think it's probably best to run a few gallons of dino mix gas through first. To seat the rings and all. The Stihl oil is fine.
     
  3. s2000zr

    s2000zr LawnSite Member
    Posts: 23

    my stihl dealer also said to run few gallons of dino mix. why dont synthetic seal rings.
     
  4. Zuess

    Zuess LawnSite Member
    Posts: 28

    Synthetic oil reduces the friction between the rings and the cylinder enough that the rings don't wear into the minute imperfections of the cylinder.
     
  5. Turf Dawg

    Turf Dawg LawnSite Gold Member
    Posts: 3,720

    I'll let you know later if it is OK because my two week old Echo 770 and Husqvarna 323 got their first fueling with Amsoil at 80:1 [and ever time since] and are running fine so far. I thought about using Dino oil the first few times but said what the heck. I will say I put 50 HRS on mower engines with Dino before I switch to syn though.
     

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