Just bought my first riding lawn mower, a Husqvarna Z248F with the Kawasaki FR651V engine. It was a 3 year old model still sitting at the local Atwoods marked down to < $2K. It has 1.6 hours on it from being moved around. Do you folks use just lawn mower branded oil and filters? I want to use 10W-30 oil and I'm not sure if there is a difference between automotive and lawn mower oils. Is there more ZINC in lawn mower oils? I see the zinc additive on their bottles.