engine oil change for avanger 2005

[brebett]

Hi, I'm ready for the oil change. Which one are you using. Can I go with synthetic? If yes which one to use? etc,etc
Jack

[MarryK]

What air temps are you running in, and what's your engine? On the Briggs, folks say 5W-30W or 0W-40W sythetic works well.

[brebett]

Hi, summer in the 80's, fall in the 40 t0 50 and winter -10 to -20. It has the koeler engine.