B7 RS4 gearbox & rear diff oil change guide
- Teutonic Tuner
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B7 RS4 gearbox & rear diff oil change guide
Following on from this thread http://forum.rs246.com/viewtopic.php?f=35&t=98654 where I queried the specs for the gearbox and diff oils I have completed the oil changes and as promised have put together a little DIY to help anyone else that wants to do the same.
Oil specs are as follows:
Gearbox:
Audi OE part No: G052911A SAE 75 W 90 (1 litre, synthetic Oil)
oil spec: 75W90 GL4+ (suitable for synchromesh transmissions and hypoid gears)
capacity: 3.2 litre (fill to -2 mm +/-1 mm)
torque plug to ~30 lb/ft
Rear differential:
Audi OE part No: G052145A1 (0.5 litre), G052145S2 (1.0 litre)
oil spec: 75W90 GL5 (suitable for hypoid gears)
capacity: 0.9 litre (fill to lip/overflow)
torque plug to ~33 lb/ft
Both oils must be fully synthetic.
Opie oils recommended Gulf Competition 75w-90 (Ester based fully synthetic) as an alternative oil to the OE Audi oils that is suitable for both the gearbox and diff so I purchased a 5 litre tub for £52 which was a very good deal http://www.opieoils.co.uk/p-60162-gulf- ... 5w-90.aspx
First of all get the car off the ground using these:
The car must be level for draining to make sure you get as much oil out as possible and for filling to make sure the correct amount is added. I raised the rear of the car first using the diff casing as the central jack point, then the front using the point on the sub-frame where the gearbox mount attaches (see pic 4).
Tools required, including 10mm hex bit for all 4 plugs, torque wrench, extension bar and a hand pump with container (old 1 litre carton used here, cleaned-out):
Front jack point circled, gearbox drain plug (green arrow) & fill plug (red arrow)
It's always good practice when draining/filling diffs etc to loosen the fill plug first as you don't want to drain the oil to find that the fill plug is ceased. This is where the extension bar is needed.
Another pic showing the extension bar and ratchet used to remove the fill plug:
Then remove drain plug and drain oil, I used an old 5 litre screenwash carton with the top cut away, works better than a shallow drain pan as it catches more of the splashes:
I drained 3 litres from the gearbox, the oil looks fairly dirty dark brown so is well worth changing even though my RS4 has only done 38k miles.
After re-fitting the drain plug (there are no copper washers to replace) hook the hose from the fill pump into the fill hole
I removed the front left wheel to get better access to the pump as you will get a dead arm after pumping just 1/2 litre whilst lay under the car...I promise you!
From the front left wheel arch you will also be able to see the fill hole so you can keep an eye on the level, this is to be filled to just below the fill hole so keep checking with your finger.
Tools for the diff (+torque wrench), note only mid length extension bar is required for the fill plug.
Drain plug (green arrow), fill plug (red arrow)
I drained about 0.8 litre from the diff
and again looked a pretty dirty dark brown
Then fill in the same manner as the gearbox but this time fill until oil starts to overflow from the fill hole (no more than 0.9 litres or similar to what you drained out as over filling diffs can cause the oil to blow past the diff seals).
I spent a couple of hours doing this but I was taking photos and going at a fairly leisurely pace. It’s quite a satisfying job and would say the gear changes feel smoother, but my gearbox was pretty smooth anyway so those with stiffer gearboxes may find more of an improvement.
Oil specs are as follows:
Gearbox:
Audi OE part No: G052911A SAE 75 W 90 (1 litre, synthetic Oil)
oil spec: 75W90 GL4+ (suitable for synchromesh transmissions and hypoid gears)
capacity: 3.2 litre (fill to -2 mm +/-1 mm)
torque plug to ~30 lb/ft
Rear differential:
Audi OE part No: G052145A1 (0.5 litre), G052145S2 (1.0 litre)
oil spec: 75W90 GL5 (suitable for hypoid gears)
capacity: 0.9 litre (fill to lip/overflow)
torque plug to ~33 lb/ft
Both oils must be fully synthetic.
Opie oils recommended Gulf Competition 75w-90 (Ester based fully synthetic) as an alternative oil to the OE Audi oils that is suitable for both the gearbox and diff so I purchased a 5 litre tub for £52 which was a very good deal http://www.opieoils.co.uk/p-60162-gulf- ... 5w-90.aspx
First of all get the car off the ground using these:
The car must be level for draining to make sure you get as much oil out as possible and for filling to make sure the correct amount is added. I raised the rear of the car first using the diff casing as the central jack point, then the front using the point on the sub-frame where the gearbox mount attaches (see pic 4).
Tools required, including 10mm hex bit for all 4 plugs, torque wrench, extension bar and a hand pump with container (old 1 litre carton used here, cleaned-out):
Front jack point circled, gearbox drain plug (green arrow) & fill plug (red arrow)
It's always good practice when draining/filling diffs etc to loosen the fill plug first as you don't want to drain the oil to find that the fill plug is ceased. This is where the extension bar is needed.
Another pic showing the extension bar and ratchet used to remove the fill plug:
Then remove drain plug and drain oil, I used an old 5 litre screenwash carton with the top cut away, works better than a shallow drain pan as it catches more of the splashes:
I drained 3 litres from the gearbox, the oil looks fairly dirty dark brown so is well worth changing even though my RS4 has only done 38k miles.
After re-fitting the drain plug (there are no copper washers to replace) hook the hose from the fill pump into the fill hole
I removed the front left wheel to get better access to the pump as you will get a dead arm after pumping just 1/2 litre whilst lay under the car...I promise you!
From the front left wheel arch you will also be able to see the fill hole so you can keep an eye on the level, this is to be filled to just below the fill hole so keep checking with your finger.
Tools for the diff (+torque wrench), note only mid length extension bar is required for the fill plug.
Drain plug (green arrow), fill plug (red arrow)
I drained about 0.8 litre from the diff
and again looked a pretty dirty dark brown
Then fill in the same manner as the gearbox but this time fill until oil starts to overflow from the fill hole (no more than 0.9 litres or similar to what you drained out as over filling diffs can cause the oil to blow past the diff seals).
I spent a couple of hours doing this but I was taking photos and going at a fairly leisurely pace. It’s quite a satisfying job and would say the gear changes feel smoother, but my gearbox was pretty smooth anyway so those with stiffer gearboxes may find more of an improvement.
Last edited by Teutonic Tuner on Fri Dec 11, 2015 11:19 am, edited 2 times in total.
Sprint Blue B7 RS4 gone but not forgotten...
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Re: B7 RS4 gearbox & rear diff oil change guide
Cracking write up bud. I think I might do this, luckily I have a 2 poster so saves some time.
Cheers for the links to the opie stuff to.
Cheers for the links to the opie stuff to.
Ordered b9 S4 Avant ibis white
Panther black 8V RS3
Misano Red B7 RS4 Saloon
Panther black 8V RS3
Misano Red B7 RS4 Saloon
- Teutonic Tuner
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Re: B7 RS4 gearbox & rear diff oil change guide
awe the stuff of dreams...your very own car lift!
We've just got a new house purchase going through at the moment that has the all-important garage, needs making bigger but either a lift or pit will be going in!
We've just got a new house purchase going through at the moment that has the all-important garage, needs making bigger but either a lift or pit will be going in!
Sprint Blue B7 RS4 gone but not forgotten...
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Re: B7 RS4 gearbox & rear diff oil change guide
well note mine yet got garage at my house the rs fits in ok.
my dad retired and built a 3-4 car garage with a 4 ton 2 post lift (How lucky am I?) that goes full height I'm 6ft 3 and can walk under the disco 3 when its up.
got full use 24/7 when i want and in bout 7 years i should be buying the house from him as he gets a place in spain or that and buys my wee bungalow off me..
my dad retired and built a 3-4 car garage with a 4 ton 2 post lift (How lucky am I?) that goes full height I'm 6ft 3 and can walk under the disco 3 when its up.
got full use 24/7 when i want and in bout 7 years i should be buying the house from him as he gets a place in spain or that and buys my wee bungalow off me..
Ordered b9 S4 Avant ibis white
Panther black 8V RS3
Misano Red B7 RS4 Saloon
Panther black 8V RS3
Misano Red B7 RS4 Saloon
- Teutonic Tuner
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Re: B7 RS4 gearbox & rear diff oil change guide
reckon with a lift you should get this done in about 1/2hr!
Sprint Blue B7 RS4 gone but not forgotten...
Re: B7 RS4 gearbox & rear diff oil change guide
Great wright up mate
A couple of jobs which i need to do
Could do with this adding to a sticky section to help others
A couple of jobs which i need to do
Could do with this adding to a sticky section to help others
Gone but not forgotten boohoo !!!
RS4 Sprint Blue Avant on Dyno after Carbon Clean http://youtu.be/7lsBbmmaDQc
RS4 Sprint Blue Avant on Dyno after Carbon Clean http://youtu.be/7lsBbmmaDQc
- TonyHayers
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Re: B7 RS4 gearbox & rear diff oil change guide
Thanks for this TT, a really detailed walkthrough, much appreciated.
06 Phantom Black Saloon:
DONE: Water Meth Injection, Carbon clean at 64k, CAI, Gutted Precats, Non-res x-pipe, H&R 8mm spacers, H&R springs
^ GONE
DONE: Water Meth Injection, Carbon clean at 64k, CAI, Gutted Precats, Non-res x-pipe, H&R 8mm spacers, H&R springs
^ GONE
Re: B7 RS4 gearbox & rear diff oil change guide
great write up
especially like the fact that you measured the drained quantities
especially like the fact that you measured the drained quantities
Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe...Albert Einstein
Re: B7 RS4 gearbox & rear diff oil change guide
nice write up with good information.....thanks
- Surrey Sam
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Re: B7 RS4 gearbox & rear diff oil change guide
A great write up, many thanks for taking the time to detail and share it.
I have found on previous cars that getting the oil warm first, helps with draining the oil out and you can get a little more volume removed. You just have to be careful with the oil being hot and burning you.
**I've reported to Moderator this topic so as to get added to the FAQ post at the top of the page**
I have found on previous cars that getting the oil warm first, helps with draining the oil out and you can get a little more volume removed. You just have to be careful with the oil being hot and burning you.
**I've reported to Moderator this topic so as to get added to the FAQ post at the top of the page**
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Re: B7 RS4 gearbox & rear diff oil change guide
Great write up, mine's in to have the clutch looked at this week, I might ask them for a price on doing this too
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Re: B7 RS4 gearbox & rear diff oil change guide
Excellent write up got be a sticky
2018 B9 RS4 Navarra Blue
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2013 B8 RS4 Sepang Blue
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- Teutonic Tuner
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Re: B7 RS4 gearbox & rear diff oil change guide
...it's already stuck!Brooner wrote:Excellent write up got be a sticky
Thanks for the comments.
Sprint Blue B7 RS4 gone but not forgotten...
- alex020869
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Re: B7 RS4 gearbox & rear diff oil change guide
Just came across this.
Brilliant tutorial. Well done.
Alex
Brilliant tutorial. Well done.
Alex
RS4 B7 Mugello Blue Saloon
B7 RS4 gearbox & rear diff oil change guide
Agreed! Great write up, changed mine and the positive difference is very noticeable.
Interestingly filling the rear diff to the fill hole took 1.1 litres yet I'd only removed 0.9 litres. So I removed .2 of a litre. Really just a FYI to recored how much you take out and how much you put in!
Interestingly filling the rear diff to the fill hole took 1.1 litres yet I'd only removed 0.9 litres. So I removed .2 of a litre. Really just a FYI to recored how much you take out and how much you put in!
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B7 RS4
Mi16'd 205 1.9 Gti
1999 Yamaha R6
White Transit
B7 RS4
Mi16'd 205 1.9 Gti
1999 Yamaha R6
White Transit