So I wanted to share my experiences with Hot Shots Diesel Extreme fuel additive because the product truly delivered. I purchased a used 1025r with 600 hrs on it a few months back. It started very rough and smoked a lot for the first 10 seconds or so. I was not pleased. I used PowerService fuel additive and premium non-bio diesel and it still started rough. I saw the Diesel Extreme at Menards and thought what the hell I'll give it a shot. I am only half a tank through using the diesel extreme and it starts up quick and clean, the stuterring and smoking has been eliminated. I will post a video later today of the start-up. You truly would not believe this is a 1025r when it starts. I dosed the diesel extreme at 4 oz in 5 gallons, thats double the recommended. And you are only supposed to use this product every 6 months. Time will tell if it truly cleaned the injectors or its just starting better because of the cetane boost. Nonetheless I am impressed. If your tractor is starting real rough I highly recommend.