So ive noticed a whiny/noisy sound coming from the rear of my 04 sti.... im guessing its the differential. Any ideas, how to fix? suggestions?

 

if it is the diff, what fluid is the "fix" and were to buy?

 

Anyone?

 

how many miles on your car? unless the diff is completely out of oil id doubt it.

 

110k

 

I notice a sound similar to the one your noticing right around the time I need a major service performed. Im about to be due or my 90k, and I hear my diffs whining, almost like a turbo spooling sound. And with your car having 110k on it, im guessing you probly did not get your 105/110k major service done? And part of that service is replace tranny and diff fluids. Once you get this done, the sound will be gone and it will feel like a new car... for 15k miles untill you do it again lol

Get it serviced!!!

 

Just got it checked and it is the rear diff, what's a good cocktail mix?

 

Motul full synthetic for your diff.

 

I use Subaru Extra S for rear and Motul Gear 300 for the tranny, got them from EQ Tuning.

 

Motul is the ish! glad u figured it out.

 

is it sold locally in san jose? i know kragen didnt have any