My tractor is an older model Case-1958. I've owned for for 15 yrs. I use it for snow and lifting 5' round bales. It's 38hp. Other than that it's not used that much. I'm pretty sure it could use an engine re-fit job. The engine just started making a knocking noise when I use it. It could be from the gas I use but not sure. Anyhow I really enjoy it and will eventually get the engine looked at.