LariatInTheMud

subbed

antony1103

So its been about a month now, but I managed to put another 4k miles on the truck since lubing the slip yoke. When I first lubed it with just PTFE, the clunk was back and worse than ever after a few thousand miles.

However, since lubing the yoke with the Neolube and PTFE, its still as smooth as the day I fixed it. I am still getting a slight click when reversing, uphill, but I would never hear it over the radio if I wasn't listening for it. Still no clunk whatsoever. This is definitely outlasting the PTFE lube alone.

Just as a point of comparison, before I lubed the slip yoke, I was getting a pretty bad clunk every time I stopped the truck (driveway, stoplights, traffic, etc). I definitely felt resistance when the rear end tried to bounce as well. Not a very fluid motion like I would expect at all. Since then however, its smooth as butter.

I'm still interested to see the long term results, and will definitely report back in 15k-20k miles, unless the clunk returns before then. Until that point, I'd be happy to go into more detail about the process or my reasoning. It would be great to have someone else do a similar fix and see their results as well.

clm65

Thanks for the update! As a fellow nuclear worker, this fix definitely has my curiosity peaked! I'm going to try this next time my clunk comes back.

NastyFFX4

iTrader: (1)

Very interesting.

STR8JAKT

subbed. Love to know if this works, the ford grease only lasts about 1500-2k miles for me and very annoying.

digitaltrucker

I used the Ford PTFE and mine has not returned in 12K miles, almost a year. I wish you had not mixed, to get a good result on the one product only.

antony1103

I know... I would have liked to only use the Neolube, but I wasn't ready to risk any problems had it not worked. Before lubing the yoke, I cleaned the splines the best I could with compressed air and solvent so I could get bare metal. I spent more time cleaning the splines than lubing them to tell you the truth. My main concern was not being able to completely cover the splines with the Neolube. Since its hard to see between the interior splines, I couldn't ensure I got full coverage. I was worried that if I missed a spot, the bare metal would rub and I would ruin the slip yoke.

I had lubed the slip yoke before using only the PTFE, but the clunk returned shortly after. This time, in addition to the Neolube, I used the same amount of PTFE as I had the first time with much better results.

Is this conclusive that the Neolube truly solved my problem? No. Is it enough evidence for me? At the moment, yes. I'm still waiting to see the long term results, but so far I'm getting exactly the results that I predicted from the beginning. If this proves to last the next 20k-30k miles, I might be convinced to removed the PTFE lube, find a way to check how well the Neolube has held up, coat any spots I've missed, and reinstall the drive-line with only the Neolube.

digitaltrucker

Sure, I wonder for the failures with the blue Ford PTFE vs the successes, if its an application issue? I noticed with my tube it separates as it sits.

antony1103

I would guess it's an application issue. I did my best to get good coverage over all of the splines, but I could see how easy it is to miss a few spots. I noticed the PTFE separating as well. I kneaded the tube the best I could before applying to get it to mix.

STR8JAKT

I got some of the neolube and did an application yesterday. Only thing I found was it takes a while for that stuff to dry/cure. Maybe my prep wasn't the best but I did it along with the ptfe, so we'll see how far I get with it.