Grease driveshaft when U-joints are sealed?

Hey y'all. I've been combing TW for answers on this, and it's been touched upon in numerous threads, but I don't think we've all come to a final conclusion on the debate. So here goes nothing.

I've got a 21 Tacoma SR (4WD V6) and there are NO zerks on my drive shaft (none of the front or rear). They are sealed, which is common for 2020 and later Tacomas these days.

My question is this: The manual obviously still says to grease the driveshaft every 15K miles, but if you have a truck like mine, you can't do that. So what do we do? The way I see it, we've got 2 choices:

1) Ignore it! This is a piece of maintenance that 2020+ Tacoma owners don't need to bother with and sealed U-joints are good until they aren't.

2) Replace the entire U-joint at some randomly agreed upon mileage.

Anyway, what do y'all think? For reference, I live in Wyoming, am not a true "off-roader", but spend lots of time on dirt fire/forest service roads looking for different hunting/fishing spots. So my truck might fall somewhere between normal and severe usage.

Thanks everyone! Appreciate any input.

 

Leave them alone till they start to go bad, then replace them with a quality aftermarket piece that will have a fitting to grease. Same as your upper and lower ball joints and tie rod ends.
As a side note - its thought in some circles that a u-joint without the capability to be greased is actually a stronger joint because it doesn't have the internal cavities to allow grease to get to the bearings. Most drag race cars use solid joints for this reason. Some "four-wheelers" here on TW may prefer a solid joint for its strength over a greasable joint.

 

Ok got it, thanks for the tips. Do you have any idea what the average lifespan of a sealed U-joint is then? Under moderate usage.

 

Ignore it. Non greasable components last a super long time. They’re very well sealed and so the grease that’s installed in them at the factory lasts a long time.