I'm coming up on 100k with my Ranger (see below) and want to make sure I'm doing what I can to keep it running in tip top shape.
So in addition to changing the oil and filter here's my list:

1. Replace air filter
2. Replace plugs (double platinum autolites)
3. Flush coolant
4. Replace fuel filter (where is it located?)


Should I also:

1. Replace the plug wires? ( no issues to date). If so what brand?
2. Replace rear axle fluid? I know it's suppose to be a lifetime fluid but when I changed the fluid on my F-350 it was very milky and NEEDED to be changed.

Thanks for your input!

 

id defitly change all driveline fluids. ususally the first thing i do is go through all of that, the last 2 S-blazers ive had had over 100K on them and were in bad need of fluids being changed.

 

Fuel filter on drivers side ( frame rail). Would add tranny fluid change to your list.

 

I should have mentioned I have the tranny flushed every 30k miles.

Thanks for the location info.

Anyone else?

 

If the factory wires are not broken or damaged by oil, they should still be fine. I'd check the wires after sunset in a dark place. If you have any arcing {light show} under the hood, replace them. Motorcraft are good, as are Delco. Other brands, I don't know.
Wiper blades? Backflush the heater core? Clean the front side of the condenser & radiator and transmission coolers. If you have plastic lensed headlights, check that they are not fogged or obstructed, and clean and polish if they are.
It is interesting to someone who has been fiddling with cars for almost 50 years that we now talk about and consider 100k mile 'service'. It was always listed in the owners manuals showing service up to and past 100k, but it was very rare that anyone got that far before the vehicle was worn out or rusted through. Now it is not uncommon at all to reach that milestone.
tom
added: I would also replace the PCV valve if it has not been done. If not replace, then at least remove and inspect, possibly clean with carb cleaner. If it rattles, it is likely functional. It would not hurt to take a look at the battery box and cables. They'll get rusty and the paint slide off from acid vapors that seem to occur no matter what you do. I've had to clean and repaint mine twice now, but it's better than trying to make a battery box from scraps.

 

To the list, add brake fluid flush & change.
I am still astonished that Ford does not have brake fluid change as a required maintenance. With all the ABS and other brake components susceptible to corrosion, it's really a safety issue. My BMW motorcycle had a requirement of fluid change every two years and that's a rule I've always applied to all my 4-wheel vehicles.

For those people who don't know, brake fluid is "hygroscopic", which means that it absorbs moisture from the air. Over time the fluid will absorb enough water to lower the boiling point and to corrode anything that's susceptible.

 

...never really thought about brake fluid change, but then again by 100K ive usually changed out a cailper or had a line need replaced by then anyways, and when i bleed the brakes i push enough fluid through them that its all fresh by the time im done anyhow.

 

well ive gone thru 2 of those basically all driveline fluids went to synthetic, plugs wires fuel and air filters and a coolant flush...small investment considering my little edge 4x4 4.0 is still running strong with literally no major problems. hub bearings, couple sensors but thats it ....only problem i have is the truck doesnt like batteries...no matter what i put in it they last a year before i start haveing issues with them and if the truck sits more than 2 or three days i have to jump start it....

 

With the batteries not lasting long, or staying charged for long, sounds like you may have a parasitic electrical system drain problem. So consider running this puppy by your favorite autoparts store & ask for their test guru for a no cost, in vehicle electrical system checkup, via their portable electrical system tester. Properly used, it can likely sniff out the problem, which could be leaky, or shorted alternator diodes, a GEM thats not timing out & shutting down & going into its low power sleep mode after driving, or a brake or door light switch thats sticking on, or some add on aftermarket equipt thats acting out, or leaky or shorted battery plates that have sulfated after being at a low state of charge over time because of any of the aforementioned problems. Let us know what you find.