Unless you're driving something that's thirsty, I can't imagine it costing you that much in gas. I'm roughly 8 hours from Atlanta, depending on how fast you drive. You're more than welcome to the part, or just about anything else off that mower. One caveat however, I can't guarantee my tranny is in any better shape than your's, I can only say it was functioning perfectly without any noises the last time I used that tractor.