Going to replace the radiator cap on my Jinma 254. I looked it up and it should be running a 6 lb cap..the cap that is on it is the factory cap and pretty well shot… it has printed on it 15 LBs. I have owned the tractor for a couple months and have not really used it much yet to really get it warmed up. Plan on using it to brush hog real soon. Do any of the members know for sure what cap I should be using before I order it ..Thanks