It does occur to me that I'm worried about no big deal. Is it noisy? Certainly. Is it a problem? Maybe not?
I don't generally sit IN the car with it idling. That I think it's a brand new noise could be incorrect on my part. Sounds like trouble to me. Reading about noises the 833 makes with a Dexron fill...maybe it's normal.
It's worth the $50 it will cost to replace the Dexron with a qualified gear oil. I ordered a gallon of GL4 today.
Fun with words: Every bottle on the NAPA store shelf (except Royal Purple...which expressly said it was safe for yellow metal) said it was good for 'non-synchronized' manual transmissions. How many of those are in play? One brand (GL5) said it was good for transmissions, but did NOT specifically say it was OK for yellow metal. That brand did not have the 'non-synchronized' verbiage.
I realize gear oil composition has changed over time. I do not understand the 'dancing with words' garbage on the labels. Yes, I should be familiar with JASO this and API that...but I am not. I simply want to buy the right stuff.
Reading the labels with comprehension...that is an impossible task.
I settled for a jug of Sta-Lube GL4. Label says it's good for manual transmissions, does not specify yellow metal exceptions or acceptions.
Maybe the noise will go away.
Maybe I'll put my name on Brewer's nine month wait list for another trans.
I might order a repair kit and 'test drive' its install on another 833 I have with other problems (main shaft wobble). If that works, I'll have a spare when mine actually grenades....from noise/damage I didn't hear before it blew up 'cuz it's got thick goo in it for lube.