Toyota Trucks: 4-Runner Speedometer Cable Noise

I've got a 90 4-Runner that the speedometer cable makes sqweeking noise
above 25 mph. I've disconnected both ends but can't see a way to remove the
internal cable or lubricate. It also looks to be very difficult to replace
with another due to the firewall penetration cable sleeve. Does anyone have
any suggestions on lubricating? Any suggestions would be appreciated.
Thanks, Gregg

There have been other posts about this same thing that you could
search for. If you pull one end of it, you could drop some lithium
grease (I think it was the lithium that was suggested) down that end,
but eventually the squeak will return. I had to replace mine on my '90
4Runner. The only hard part was getting the routing the same as
original down to the t-case. NAPA has the cable for $17 total.

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