RE: DLE 55 oil slection?
You can use whatever oil you are going to use from now on even in the beginning
Just don't be using Amsoil at 100:1
Most around here are using Red Line at 40:1
I use Pennzoil at 32:1 and have used that ratio for 40 years. I did use Lawn Boy until about 10 yrs ago.
Stihl Ultra has the best reputation.