I just started using that sea foam with some noticeable results. Smoother engine sound and feel mostly. But my rancher 350 seems a bit sluggish when pushed in the high gears. I’m getting about 45mph max. From what I’ve read, that’s a bit slow. It is an all time 4×4 so maybe that’s all I can get? Just ordered a new air filter. Not expecting much but I’m sure it’s overdue anyway.