white crystals in Front differential

[reallyspeedly]

When i was going to do a oil change on the front differetial of the r32 gtr, i took my finger in the drain plug hole and to see if there was metal flakes in there. By my suprise it felt like there was gravel in the bottom of the differential. I took some out and there wasnt gravel, it was like white small crystals in there.(looked like gravel first) If i rolled it between my fingers with some force it melt away or got crushed pretty easily. 

There has only been a little bit of oil in the bottom of the differential for a couple of years because the car has just been sitting and some oil were drained because of engine rebuild and axels replacement. I belive its just the oil and condensation/water that's in there, that created these small things that looks like small white stones/crystals, what do you think?  Have you seen this before? I've worked with alot of car's but never experienced this. 

I was about to remove the diff cover but after removing all the 10 bolts, the cover still was glued on there hard as fu##. So i thought i could put some new oil in there, drive a few miles, then drain in and put some new in again maybe? I cant belive that the gears in there will take damage from this?

[joshuaho96]

Possible it's calcium additive from Shockproof gear oil. 

[Duncan]

Either way, if you can crush it with your fingers it won't directly damage a gear. I'd do as you suggested, fill it with something cheap, run a few klm, flush and refill.

[reallyspeedly]

45 minutes ago, joshuaho96 said:

Possible it's calcium additive from Shockproof gear oil. 

 

39 minutes ago, Duncan said:

Either way, if you can crush it with your fingers it won't directly damage a gear. I'd do as you suggested, fill it with something cheap, run a few klm, flush and refill.

Thank you guys. I really appreciate your help and support/thoughts.