Military engine - what is this part?

[SeriesShorty]

In addition, hanging one around your neck makes you look a very knowledable and thoughtful mechanic. People will solicit your advice.

LOL I actually have one in the basement that I haven't used in years. I got so used to the noises my Discovery's engine was making that I stopped fretting. A knock, a tap, a chug and a thug but the thing just won't friggin die!

But I am kinda curious as to why the oil cooler groaning went away suddenly after an oil change. Anyone know if that bolt with the hole in the sump has to be aligned any certain way to keep the flow to the cooler?

[scatterling]

I checked the fitting on the end of the cooler hose that attaches to the sump today and the inside diameter is larger than the two ends, so it really should not matter how the pipe is aligned with the bolt.

[SeriesShorty]

Thanks for the confirmation Neil! It sure is nice without all that groaning going on.