Diff Oil?

[Peter89]

Series 1 VN V6 A4 OPEN DIFF

so yeh, the diff oil has never been changed, the car is just about to hit 210,000kms.

i have the correct oil and amount, i had a look today. There's a rubber filler plug but there's no drain plug, how ya supposed to change it? do i have to remove the whole rear housing?

[greenacc]

you just remove the bottom bolt on the back of it. It looks the same as the other 10, but is actually a drain plug.

[(CODEZ)]

i think you just remove most of the bolts so theres a gap in between the backing plate and diff and it will just drain out

but dont trust this advice lol i've never done it

[Morton]

Nah man, just the bottom bolt

[(CODEZ)]

Nah man, just the bottom bolt

i was beaten to it anyway lol

[savage1987]

mmm. In IRS cars it's just the bottom bolt. I can't remember if that's the same for live axle. I don't believe it is. If it is, I'm an idiot, my rear axle has been in and out more times than I care to remember and I never found a drain plug.

OP, 200,000 with no diff oil change is no big deal at all. My VN had hit well over 500,000km before it got an oil change in the LSD. It still didn't work, so I threw it in the bin and built a minispooled rear axle

[Morton]

It's the other way around. On live axle, it's just the bottom bolt. For IRS, there's a special drain bolt on the driver's side of the housing.

[TVR-190]

It's the other way around. On live axle, it's just the bottom bolt. For IRS, there's a special drain bolt on the driver's side of the housing.

i just used the bottom bolt on mine

[savage1987]

lol wow, I AM an idiot. I pulled my diff apart 3 or 4 times between two bent axles, an axle leak, seized centre bearings, etc.. and never found the drain plug

Ended up getting it built professionally for $650. Shame, it's backlashing already

[Peter89]

well, either i have a different diff or you guys are wrong. there's no drain plug, i had to remove the whole rear housing to drain the oil, took a bit of time but yeh, at least i got to see inside the diff.

the oil was greeny metallic brown, with a putrid smell that says in your mouth and nose

[savage1987]

lol yep, they'll do that

[shiftySLE]

tranny oil, motor oil, brake fluid etc etc etc. Thats bearable but I really feel sorry for guys who work on diffs all the time. Its a crap smell that stays with you and trust me its not even east to get the smell out of you clothes. Until the wifey comes and does it for ya anyway....

[savage1987]

Nup, not easy at all. Use enzymes. LOTS of enzymes. Anything with enzymes and even then, it'll take a few washes. I just use old shitty clothes i can throw out or tear into rags for working on my diff.