I have read almost every post on Walker vs Navigator. I have a 48" 27 hp Nav I have been trying ouy for 2 weeks (dealer loaner, great guy). I feel very comfortable on the machine. I have tried out the walker 25 hp, like it, just not as much. My question is, does anyone have any comparables for fuel economy on the Nav vs the Walker Diesel? I have 3 diesel ZTRs and use dyed diesel for cost. I like the Navigator alot but the Walker Diesel appeals to me financially (operating expense) and conveniece (all diesel equipment). So far my experience is that the Navigator is a hog on fuel. Around .8 -1 gallon per hour.