200,000 Miles - What should I do?

[BonesDT]

I'm going to be hitting 200,000 on my 4.0L SOHC. What do you guys recommend? Here's what I'm thinking so far:

Oil & Filter change & Air Filter
Spark Plugs
Fan Belt
I'm thinking about replacing the pulleys too, I hear some squeaking
Fuel filter
Power steering fluid change
manual transmission & t-case fluid changes

Is it worth replacing the fuel injectors?

I've changed the diff fluid many times due to installing, removing, reinstalling, removing again the Aussie locker
I changed the coolant a year or 2 ago, so it's good
The O2 sensors are not registering any codes (I replaced an upstream a year or 2 ago)

I thought hard about the timing chain. I decided I'm NOT going to invest the time and money to replace it. I still can't find a straight reliable answer whether or not the SOHC is an interference. In any event, I'm willing to drive until it breaks then I'll do a V8 swap. It will be a good cue to retire the Ex from my daily driver.

 

[2000StreetRod]

interference engine

The SOHC V6 is definitely an interference engine. If the crankshaft to jackshaft chain or either camshaft chain breaks while the engine is running the pistons will strike the valves. If one of the chains slips significantly (60 crankshaft degrees) the pistons will strike the exhaust valves.

Even though the engine has 200K miles I would not replace the left or right cassettes, the crankshaft to jackshaft tensioner or guide, or the balance shaft tensioner or guide if there are no audible indications of failure. I used to suggest replacing the spring/hydraulic left and right chain tensioner every 75K miles. However, the new ones seem to have weaker springs than the old ones. I now rely on a pre-oiler to extend the life of the engine.