I'm looking for any opinions about which u-joints are the best to use on my truck. I almost never go off-road. 70% of my driving is in the city, and I plow commercially in the winter, I also tow my bobcat on a dump trailer approx 12K. I also change my oil way to soon, so using a greaseable joint is OK. Are there any u-joints that have grease fittings on each end cap? any advice would be greatly appreciated!