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Figure out why it’s overheating. It might be because your fan clutch is failing and isn’t pulling enough air. There are some neat electric fan conversions out there but if your cooling system itself is the cause, an electric fan won’t fix it. And if your current fan isn’t pulling enough air, the...

More important than the brand is using the same type. Do NOT mix types. If you also stick to a certain brand of the same type, you 100% know it’s compatible. As to type….for these old Jeeps it’s not too precise. Lots of people report good results using HOAT type, Zerex GO5 brand. So I use it...

Yep. Internet legend. Use whatever you like unless your repairs are under warranty and then use whatever they tell you to use.

I usually use the Valvoline squeeze bag/bottles. But if i have one that’s hard to get to, I use this https://www.amazon.com/gp/aw/d/B0CN1B2J5Q?tag=wranglerorg-20

How do you plan to check and adjust it?

What are the ACUTAL engine temps? How have you determined the engine is overheating at idle? Not saying you are wrong but you are throwing parts at it and I haven’t yet heard how you have decided it’s overheating.

Bingo

I painted my ZJ conversion parts before install so I never had any corrosion

Guess you haven’t seen new parts fail eh? That’s why I recommended you inspect it. But sounds like you have it all figured out so good luck

I’m suspicious of your water pump impeller. I’d pull it and inspect it.

I’ve taken it to the desert (Phoenix) and hot humid areas with no issue. It’s always possible Denso had a bad run of radiators (every company including Mopar has defective parts occasionally) that don’t work as well. Mine has been flawless. If it’s not working like you would like, try a...

Yeah that’s more than a seeping rear main!! Repairs definitely needed! Sorry

It should be sealed. The dents don’t bother me. What DOES bother me is the possibility someone installed it and then removed it. If they opened the ports for any substantial length of time, moisture got in and absorbed into the desiccant. The desiccant can’t take too much moisture before it’s...

Personally I doubt that high mileage oils are an issue but I don’t have solid evidence to try to change your mind!!

Reminds me of flying in military helicopters. Leaking oil wasn’t a problem and common to see. If it’s NOT leaking oil, be afraid.

Just accept that Jeep 4.0 engines will leak from the rear main. Look at it as marking their territory. And if it’s not leaking now….thats great….but it will eventually. The rear main isn’t a great design. Unless it’s pouring out steadily, it’s not something to worry about. Run a high mileage oil...

Yep. And another thing i have learned in life….some people are miserable assholes who no one misses when they finally die.

Don’t sweat it. Never know unless you ask. If that offends someone….you're better off without them.

Yep. Need to know this. Also, I’d be looking at the possibility of a fuel injector(s) leaking down after the engine is shut off What brand of fuel pump and why did you replace it originally?

Replace your starter.