Maybe not related, but I have run into that a couple times with my mule. The cause of all the smoke (when going uphill) was gas getting into the crankcase, and raising the oil level. On level ground everything is fine, but going up hill must change the crankcase level or something. All it takes on the mule is to change the oil. Then all is well until the next time. Seems to be a common problem with mules, especially when used for a lot of short trips when the engine doesn't get up to normal operating temperature.
I suppose the RTV is a diesel, but the same kind of deal may happen there, too.