I can't find the manuel for my Pressure Washer w/Honda GC-160 5.0 HP Engine. I believe I need to mix oil into the gas for this pressure washer, but no where on the washer itself does it say. Can you tell me what the oil/gas ratio is for this engine? Or specifically how much oil to add to 1 gallon gas? Thanks!

Taylor , it just uses unleaded gas , no mix , honda gc160 5.0hp (160cc) honda engine specifications (http://www.trupower.com/honda/gc160/gc160spec.htm)

Obviously, I now need to find the oil and check it. Thanks for the answer. I've been waiting several days to finish a project because I didn't want to do it wrong. I love this thing.. . It works great on the kids outdoor toys!

Do the Honda gc 160 5.0hp ( 160cc ) engine use straight 30 motor oil or 10w 30 ?

Do the Honda gc 160 5.0hp ( 160cc ) engine use straight 30 motor oil or 10w 30 or 10w 40 ?