I have a 6-8 year old 180. Has the primer bulb. Can be hard to start maybe once every couple years. I run stabil 360 in e10 and never drain it. Try to start it once in the spring and once in the fall if I’m not using it. I’ve found that’s a good system for all my stuff, reminds me i need to start the snow blower soon. I never drain or run out anything. I used to run 87 or 89 in stuff. Lawn shop guy convinced me to use 93 last winter.