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FL318is
11-21-2006, 07:09 PM
Any brand of diff fluid better than the next?
romkasponka
11-21-2006, 08:16 PM
if you have LSD, you must use for limited slip dif dedicated oil.
Zoso
11-21-2006, 11:15 PM
Any brand of diff fluid better than the next?

I've used Mobil 1, Redline, and Castrol synthetic fluids in my LSDs over the years and they've all been fine.

I say just get a quality name synthetic and call it a day.
FL318is
11-22-2006, 01:31 PM
I do not have one. Thinking Redline. Any particular weight/vis?
Zoso
11-22-2006, 02:06 PM
Redline 75W-90 is a good choice.
FL318is
11-22-2006, 02:08 PM
I will pick it up on the way home.
biljak
11-22-2006, 10:52 PM
i have made a mistake while ordering oil, and i put Castrol SAF-XO (for final drive without limited slip differential) instead of a SAF-XJ (for and without LSDs). They are both full synthetic 75W90. Do you think I should change the oil, or it can stay? It's not really cheap, so...
AL GReeNeRy
11-25-2006, 11:38 PM
hw do you replace the diff fluid? i see the bottom most bolt, but i dont want to drain it unless i know where to fill it up from... and how much can the diff hold? got a stock, small case 4.10 non-lsd
FL318is
11-26-2006, 12:34 AM
...the top most bolt is the fill. I bought 3 containers (?quarts?) not sure but rec you wait for the Tech heads to reply.