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Did you inspect the mounting surface for the turbo and the turbo itself very carefully? Any damage, dings etc. could cause your issue, even thought there is no valid reason to run synthetic oil in a Detroit I don't think that would be your issue here. It is a very simple setup as far as the...

A fine metallic mud is OK, flakes or chunks not good.

I queried Trailworthy Fab and they said they have options for rims using the HMMWV centers.. https://trailworthyfab.com/

I have not, I torque them to 35lb

The first thing I would do is remove the magnetic drain plug and spread the stuff stuck to the magnet on a clean white piece of cloth, let the oil soak in and see what is left. that will tell you if your suspicion is correct, if it is then disassembly will be needed to determine the failure...

That shaft looks a little short to me to begin with

MORE pictures, please!!

Welcome to the SS forums!!

BTW C on the turn signal flasher goes to ground.

Well I was bored so I looked at the TM I directed to you and spotted a mistake in the truth tables So lets look at how the switch works. Pins A Right front turn signal B Left front turn signal C Left rear turn signal/brake D Brake light feed from light switch E Right rear turn signal/brake light...

The schematics are too large to post here, here is a link to download one of the TMs that has schematics, look at appendix H1 You did not state the model/serial number of your truck is but the turn signal wiring is pretty much identical across the HMMWV line...

As it happens the beach is a great place to drive ones HMMWV!!

Here is a link to the TMs, as addressed above https://www.nsnlookup.com/equipment-intelligence/land/hmmwv

You mean the front AC evaporator/heater yes?

Dang that's what I have, do you have a picture before you pulled it out?

Welcome to the SS forums. Although all HMMWV's have similar lighting system it would help to list your. model/ser (X out the last three digits) number truck that you have, this will help members to give you advice

I put the R1 (parts truck) in the bay this weekend, did all the basic maint. yesterday, drained and refilled all the hubs and diffs, drained the water/fuel out of the fuel tank, took a shortcut on the fuel, I put an inline filter between the filter housing and the IP, that way I could see the...

I appreciate that!! how thick is it? it looks thinner than the M998 insulation which would explain the problem I am having.

Not likely to help, if you added it to the oil guaranteed not to help. It is best to have an injector wrench like this one. But you can also use a 19MM/3/4" open end wrench. They are all a PITA to get to, some are worse, If it were me I would access and "test loosen" and snug back down as...

IIRC you can measure the shaft dia. interesting though I thought those shields on the steering arms were only on the 12K hubs, snap a couple pics of the plunge (inside) of the shafts.