View Full Version : can Synthetic be use in new engine?

06-03-2010, 05:47 PM
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?

Richard Martin
06-03-2010, 06:36 PM
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.

06-03-2010, 07:16 PM
my stihl dealer also said to run few gallons of dino mix. why dont synthetic seal rings.

06-03-2010, 08:25 PM
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.

Turf Dawg
06-03-2010, 08:35 PM
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.