Speedometer gear ratio adapter lubricant?
I finally got my truck on the road and diagnosing a non-working speedo. As part of the troubleshooting, I removed the rear ratio adapter and when trying to manually rotate, it was very stiff. So I removed what appeared to be a plug on side and noticed a lot of hardened grease in the gear housing.
That freed up the sticking and it rotates very smooth. Does anyone know what type of lube is used? I assume it is some type of grease as oil would leak out around both connections like it did while I was flushing it out?
Adapter p/n 1563872 along with a couple photos.
Thanks for any help!
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