TheUnscented

Ok, looks like it's been a year since the last time I didn't change the differential and transfer case fluid. Seems pretty straightforward, why didn't I do it? Oh yeah.....I just changed the oil and was preparing to change the differential gear oil (x2) and the transfer case fluid.... with the stuff I bought last year and just remembered why I didn't do it last year: never settled the question if I could reuse the differential plugs and transfer case plugs. We reuse the oil drain plugs with a new crush washer, why would the diff & t-case be any different if the washers can be replaced?

In case I'm off base, the differential plug part number seems to be 955-332-057-00, about $15 each x 4. Is there a washer part number in the event we want to reuse the same plug?

Is there a part number for the transfer case plugs? ECS tuning has a part number: Mfg Part #95530111501
ECS Part #ES#1445371 Is there a washer part number in the event we want to reuse the same plug?

Or maybe I shouldn't change these fluids? 96k, no towing.

Thanks in advance.

140.6er

Hang Yu Xu

What is the torque spec for the plugs? Thanks

kennyt

Differential plugs 26ft/lb, transfer case 15 ft/lb MAX. Do not over torque the transfer case plug or you will crack the transfer case. If you notice the transfer case plug is not tightened to level with the case, it sits a little higher.

125shifter

Sounds like folks are happy with this in the transfer case:

Ravenol J1C1125 Transfer Case Fluid TF-0870 - Full Synthetic (1 Liter)

What are folks using in the differentials? Weight and brand?

140.6er

Quadcammer

I used Redline 75w90 on my cayenne S without PTV. seems fine.

garyypk

I use Ravenol J1C1109 SAE 75W-90 Gear Oil - VSG Full Synthetic API GL-4 / GL-5 Spec (1 Liter) for my front and rear differential. My 2013 Cayenne S does not have PTV+.

YaNi

Any 75W-90 gear oil that is GL-5 will work. They're open diffs, unless you have the fancy PTV, so they don't need any friction modifiers.

I use Liqui Moly Full Synthetic.

Y2kaibo

Hi all. Does the diff fluid change need any friction modifier additives on a cayenne without ptv+?

Does the diff fluid change on a non ptv+ require to spin the wheels when pumping the fluid in to get the full amount?


thanks in advance.