Never used the Poulan....ya will have to read the bottle..
I do know about the Stihl...I bought a new leaf blower and bought a 6 pack of their oil to go with it..
The Stihl oil was so slick the the motor never did break in....or run right...and it was cheeper to buy a new blower than have the shop work on it...

If ya change you're mind about the oil, let me know..