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Hi,

Just had a flyer from the dealer saying that it's time for the quattro transmission fluid to be changed. Does anyone know what this entails or the expected cost?
Car is Sept 2006 and 19,000 miles.

Thanks-Mark.

Wow, mine's a July 2006 with 64k miles and I haven't had such a flyer. More likely lethargy on my dealers part though.

MSLRS4 wrote:Hi,

Just had a flyer from the dealer saying that it's time for the quattro transmission fluid to be changed. Does anyone know what this entails or the expected cost?
Car is Sept 2006 and 19,000 miles.

Thanks-Mark.

the tranny (contains front diff) and rear diff are supposedly lifetime fluids
but changes at 30 to 50k miles make sense to me
19k seems pretty low

front 3.2 l
rear 0.9 l
fluids are ~$40/liter
labor should be ~ 1 hour each, imo

Thanks guys....

Just rang the dealer to see if the mailer was correct. He said ignore since the RS4 unit has lifetime fluid and it's only for vehicles with a Haldex unit......Happy Days more money saved.

MSLRS4 wrote:Thanks guys....

Just rang the dealer to see if the mailer was correct. He said ignore since the RS4 unit has lifetime fluid and it's only for vehicles with a Haldex unit......Happy Days more money saved.

take the 'lifetime' bit with a large dose of salt...
if it were my car I would change it

I did mine at 30k (figuring it was 'break-in' oil, had foulings, etc.) and will do the next +50k

BMW M require a break-in chnage for their cars at 1200 miles

MSLRS4 wrote:Thanks guys....

Just rang the dealer to see if the mailer was correct. He said ignore since the RS4 unit has lifetime fluid and it's only for vehicles with a Haldex unit......Happy Days more money saved.

Credit to my dealer then for not sending me the flyer; I retract my earlier statement.

ArthurPE wrote:

MSLRS4 wrote:Hi,

Just had a flyer from the dealer saying that it's time for the quattro transmission fluid to be changed. Does anyone know what this entails or the expected cost?
Car is Sept 2006 and 19,000 miles.

Thanks-Mark.

the tranny (contains front diff) and rear diff are supposedly lifetime fluids
but changes at 30 to 50k miles make sense to me
19k seems pretty low

front 3.2 l
rear 0.9 l
fluids are ~$40/liter
labor should be ~ 1 hour each, imo

What spec oil is used for the change ? I am thinking of changing my fluid as well ?

the spec is 75W90 fully synthetic for the tranny GL4/GL5 rated for synchromesh
the diff is 75W90 fully synthetic GL5 for hypoid gears...

honestly, since you will be doing it infrequently, bite the bullet and get the oem stuff...

the spec is 75W90 fully synthetic for the tranny GL4/GL5 rated for synchromesh
the diff is 75W90 fully synthetic GL5 for hypoid gears...

honestly, since you will be doing it infrequently, bite the bullet and get the oem stuff...

so does that mean you can use the same stuff in tranny and diff as long as you use GL5 rated not GL4 or is GL4/GL5 a rating in itself?

neckarsulm wrote:

the spec is 75W90 fully synthetic for the tranny GL4/GL5 rated for synchromesh
the diff is 75W90 fully synthetic GL5 for hypoid gears...

honestly, since you will be doing it infrequently, bite the bullet and get the oem stuff...

so does that mean you can use the same stuff in tranny and diff as long as you use GL5 rated not GL4 or is GL4/GL5 a rating in itself?

the fluids Audi supplies are different
you want GL5or GL5+ for the diff\the tranny must be compatible with synchro's GL4/GL5 (it's a dual rating)
LubroMoly makes both, but again, imo, oem is the way to go...

diff http://www.liqui-moly.de/liquimoly/prod ... _2048.html
tranny http://www.liqui-moly.de/liquimoly/prod ... _4433.html

they recomend the same for both (GL4+)
but imo the GL5 is better for the diff

Doesnt the GL5 have higher sulphides that can potentially damage the copper synchros?

zachf88 wrote:Doesnt the GL5 have higher sulphides that can potentially damage the copper synchros?

hence the GL4 in the gearbox (brass, bronze or Cu?) some 'yellow' metal, lol
but I'm not sold on that
I've heard from sources I trust that was only an issue with pre 1994 boxes...
the new stuff can handle the GL5 (rated for synchromesh)

I'm currently running gl4+.... i had the gl5 before.... cant really tell a difference

I did a change on my B5 to GL5 in both (Fuchs 75/90) at 100k miles and it was noticeably less keen on changing gear when cold (it was around zero degrees).
IIRC someone else had the same issue