Looks like you got a REALLY NICE truck there! CONGRATS!
Appears to have had a major service in 1990, & fresh paint in 2004! NICE!!
(I think mine has "CARC 91" on it, so understandably your's looks MUCH better!)
Actual Total Mileage is a complete guess, as speedos & tachs are swapped/replaced pretty regularly. Your's could have just 17Kmiles on it total, OR this could just be mileage since rebuild, OR this might be a guage set from another truck! Hard to say for sure. BUT your mileage & engine hour numbers look like they match (under 30miles per hour average), so take a guess based on that!
All of the other markings are noting various services or PM items.
Almost ALL of them need to have a few things fixed. Your stuff looks pretty minor!
The axle seal leak is pretty common.
There are several threads on here describing how to do it. READ THEM!
The most crucial item is setting the bearing preload. Too tight & the bearings will run HOT!
The step where you back the nut off approx 1/8th turn is crucial!
Also be sure to use Lithium Based High Temp Grease & not Moly Based Grease.
If done right your hubs should be no hotter than approx 130degreesF after a good 20minute run at highway speeds.
(I just went thru this myself... In fact I think my leak was on the same wheel!! So feel free to email me or PM me if you want to learn from my mistakes/headaches!)
Be sure to use the correct gear oil! It needs to be "yellow-metal" compatible!
Look for the MT-1 designation, or simply use the GL-1 "old-school" stuff!
Check the manufacturer's spec sheet (on their web site) & they'll usually specify whether or not it meets MT-1 or is "yellow-metal" compatible. Best to check the bottle also! (LOTS of threads in here on this topic also!)
AGAIN CONGRATS!!
(IF you don't have one already I'd suggest getting an Infrared Temp Gun. These are REALLY Handy for seeing if something is running hot, AND tells you exactly HOW HOT! So no guessing...
Harbor Freight has them on sale right now for just under $40.00 (reg $60.00). This is via their web site, BUT if you print the web sale and take it to your local store they will usually match the sale price!
The HF Store I went to also had the pocket version on sale for under $10.00, but this doesn't have a laser for targeting & I'm thinking I'd burn up those little batteries pretty quick. So I got the best one they carry for only $39.99! (Similar gun was over $80 at Napa Auto Parts!!))
"Cheers!"
-Bear-