Quick diff and tranny fluid question

[jaehoppa]

I'm planning to change those two fluids next week and want to make sure I have everything right.

I read 3.5 quarts for transmission fluid and 0.9 quarts for diff fluid. Is this correct? In one thread it said 1.9 quarts for S4 for the diff fluid but I guess the RS4 is different?
Also, I read GL-4 fluid is recommended (or required) for transmission and GL-5 for diff and I was looking at Motul Gear 300 75W90 which is categorized as both GL-4 and 5.
Can I use this oil safely for both the transmission and differential?
Any other fluids in our cars that needs to be change other than these two? I want to get as much done in one shot.

Thanks in advance.

[BenSti]

I'm planning to change those two fluids next week and want to make sure I have everything right.

I read 3.5 quarts for transmission fluid and 0.9 quarts for diff fluid. Is this correct? In one thread it said 1.9 quarts for S4 for the diff fluid but I guess the RS4 is different?
Also, I read GL-4 fluid is recommended (or required) for transmission and GL-5 for diff and I was looking at Motul Gear 300 75W90 which is categorized as both GL-4 and 5.
Can I use this oil safely for both the transmission and differential?
Any other fluids in our cars that needs to be change other than these two? I want to get as much done in one shot.

Thanks in advance.

Gear 300 is fine for both the transmission and differential.

[jaehoppa]

thanks! are the quarts correct?

[BenSti]

Close, 3.2L for the transmission, 0.9L for the differential. Just top them off until it begins to spill out the fill plug.

[jaehoppa]

cool thanks. so I will order 5 Liters. Is the Motul one of the better oils for our cars?

[BenSti]

cool thanks. so I will order 5 Liters. Is the Motul one of the better oils for our cars?

Yup, Gear 300 is one of the best oils you can use.

[jaehoppa]

When I look up by car on Motul website they recommend Motul 300 LS (GL-5) for the differential. What's the difference between the LS and non-LS version?

[CoreyRS]

LS = limited-slip?

[singleframe]

how often should this be done?? Mine's probably due soon (68K)

[BenSti]

how often should this be done?? Mine's probably due soon (68K)

I would suggest every 25k.

[singleframe]

cool. bought mine at 58K so I'll check the service history. I know previous owner took it in for every 10K service, just not sure if that was taken care of.

[jaehoppa]

Where is the cheapest place to buy the Motul gear 300 oil?
thanks.