Fluid preferences

[LCA078]

Agreed- dino oil is good for our trucks. Today's dino oils, or the additives really, are better than what was available when our engine was designed 40+? years ago.

And agree with Coug that getting rid of the nasty stuff in the oil is really what matters as opposed to the oil breaking down in our application. So it's not just miles but also time, weather, and driving habits. If you're only firing up the truck to go down your driveway and check your mail once a month in a humid environment, then you might want to change it more on time than miles.

 

[TOBASH]

Almost every time I have seen someone change an older vehicle oil to synthetic when that vehicle has not been using synthetic previously, they have developed seriously leaks.

I don’t understand the chemistry/physics however I’ve seen this in diesel and gasoline and in transmissions.

I only use old fashioned “normal” Rotella 15-40.

 

[Retiredwarhorses]

if folks just visit the TM, they can easily find the military uses 3 criteria for all fluid changes.
time
miles
hours

choosing any one of these is a catch all for anyone’s maint schedule

 

[DREDnot]

I couldn't believe the amount of torque it took to unscrew the lug nuts even once the mechanical weld was broken on the taper.

I believe the mil-spec lug nuts have lock nut feature like most of the nuts on these trucks. Ive never seen them be able to spin down by hand even when new.
Best practice I've used is to tough it out with a long-handled ratchet or breaker bar. Using and impact gun on them seems to cause them to gall the threads since they tend to have rust, mud and or thick layers of CARC paint on them. No Formula 1 tire changes on these things

 

[Milcommoguy]

I believe the mil-spec lug nuts have lock nut feature like most of the nuts on these trucks. Ive never seen them be able to spin down by hand even when new.
Best practice I've used is to tough it out with a long-handled ratchet or breaker bar. Using and impact gun on them seems to cause them to gall the threads since they tend to have rust, mud and or thick layers of CARC paint on them. No Formula 1 tire changes on these things

From oil to nuts ???

What kind of washer fluid ? CAMO

 

[maxpower_365]

Thanks for all the input!

Anyone have a favorite oil filter wrench for breaking the filter loose? I have strap one that I've never really been impressed with.

 

[Thunderbirds]

Thanks for all the input!

Anyone have a favorite oil filter wrench for breaking the filter loose? I have strap one that I've never really been impressed with.

.

I've had better luck with the metal strap swivel handle kind (3rd from left), and tried the 3 jaw adjustable which only crushed the filter on the M1123 because I find they occasionally seize on after 3,000 miles...

 

[maxpower_365]

if folks just visit the TM, they can easily find the military uses 3 criteria for all fluid changes.
time
miles
hours

choosing any one of these is a catch all for anyone’s maint schedule

I looked through the TMs and I found a lot about how to replace different parts of the engine lubrication system, but couldn't find the recommended oil change interval. Would you mind pointing me toward the correct TM?

 

[LCA078]

In the -10, look at Appendix G, section G-3. LUBRICATION INTERVALS. Lots of good info about all the different lube points and intervals.

And of course the military makes it confusing because you have to scroll pretty much to the end to find the exact line about the crankcase oil: "Have oil changed every 3,000 mi (4,827 km), or semiannually, whichever occurs first."

It's literally the last sentence in the -10 TM before the Index.

 

[maxpower_365]

In the -10, look at Appendix G, section G-3. LUBRICATION INTERVALS. Lots of good info about all the different lube points and intervals.

And of course the military makes it confusing because you have to scroll pretty much to the end to find the exact line about the crankcase oil: "Have oil changed every 3,000 mi (4,827 km), or semiannually, whichever occurs first."

It's literally the last sentence in the -10 TM before the Index.

Thanks LCA078. For my truck it will almost certainly end up being time based because I think I only put on about 1,500 miles a year.

I did the oil change. Crushed the filter with my filter wrench (strap style wrench). The filter barely came off. I hope it doesn't come off that difficult next time. I put the new filter on hand tight (no wrench).

I ended up putting in the Rotella T5 15w40 since I had already bought it. We'll see if the synthetic blend reveals any leak pathways. I'll go back to the dino oil if it does.

 

[TOBASH]

Thanks LCA078. For my truck it will almost certainly end up being time based because I think I only put on about 1,500 miles a year.

I did the oil change. Crushed the filter with my filter wrench (strap style wrench). The filter barely came off. I hope it doesn't come off that difficult next time. I put the new filter on hand tight (no wrench).

I ended up putting in the Rotella T5 15w40 since I had already bought it. We'll see if the synthetic blend reveals any leak pathways. I'll go back to the dino oil if it does.

Always place a thin layer of oil on filter rubber. That help to install and remove. Also DON’T over tighten.