Today I was doing maintenance on my '05 Taco DCSB 4x4 that will roll over 100,000 miles in a few weeks and I was up under it checking and lubing. The main drive shaft u-joints don't have grease zerks but I was giving them a close inspection, looking for excessive play, etc.
I noticed a line of grease slung out onto the bottom of the floor pan from the front u-joint of the main drive shaft. Again, this is a factory sealed u-joint with no grease fitting. There wasn't any excess play in the joint yet, and the other two joints in that shaft looked just fine, but I'm getting ready to make a 3,000 mile trip in that truck next month. I wonder if I ought to go ahead and replace the u-joints in that main shaft since it's obvious that the front joint is at least somewhat low of grease or may even be dry. I sure don't want to be stuck on the side of the road in the middle of nowhere in South Dakota or Wyoming.
What do y'all think?