Rear Differential Problem??

biker921 · 05-29-2008, 08:34 PM

Now I just traded in my 06 WRX for the 06 STi a couple of weeks ago and put in my exhaust and other under-the-car mods Tuesday. When doing so I noticed that the rear differential seemed to have a sort of dirty fluid similar to that of oil or other engine bay fluids. What is this fluid and should I be worried that my rear diff. is "leaking?"

crf-sti · 05-29-2008, 11:24 PM

it's gear oil (80-90w), and it shouldn't be leaking. without any pics it's hard to say, but i would say have your dealer check it out asap, good luck!

biker921 · 05-30-2008, 08:42 AM

Here's the pictures I shot today.

supermarkus · 05-30-2008, 08:49 AM

Either that diff cover needs tightening or somebody pulled those axles out during a suspension swap. Check the fluid levels ASAP, no, yesterday. If it is low, get some Subaru LSD fluid and throw it in there. Don't break your temperature probe.

**Turninconcepts.com** · 05-30-2008, 09:52 AM

That's nothing bad, and looks about normal. It's just residual coming out the vent at the top. If it were wet, and all over stuff then I'd be concerned.

polyol · 05-30-2008, 11:02 AM

Yeah, do you see any oil on pavement were you park?

05-29-2008, 08:34 PM	#1
biker921 Amateur STI Driver Car: 2006 AW STi Fav Mod: Stage 2...so far... Location: Austin Posts: 32 Join Date: May 2008 Trader Rating: (0)	Rear Differential Problem?? Now I just traded in my 06 WRX for the 06 STi a couple of weeks ago and put in my exhaust and other under-the-car mods Tuesday. When doing so I noticed that the rear differential seemed to have a sort of dirty fluid similar to that of oil or other engine bay fluids. What is this fluid and should I be worried that my rear diff. is "leaking?" This ad is not endorsed by this member. Please register or login to hide this ad.

05-29-2008, 11:24 PM	#2
crf-sti Professional STI Driver Car: 05 CGM STI w/goldies Fav Mod: Advan A048's Location: Sonoma, CA Posts: 477 Join Date: Mar 2008 Trader Rating: (0)	Re: Rear Differential Problem?? it's gear oil (80-90w), and it shouldn't be leaking. without any pics it's hard to say, but i would say have your dealer check it out asap, good luck!

05-30-2008, 08:42 AM	#3
biker921 Amateur STI Driver Car: 2006 AW STi Fav Mod: Stage 2...so far... Location: Austin Posts: 32 Join Date: May 2008 Trader Rating: (0)	Re: Rear Differential Problem?? Here's the pictures I shot today.

05-30-2008, 08:49 AM	#4
supermarkus Spec C Club Car: 08 STi, SSM Location: Edmonds Washington Posts: 1,441 Join Date: Dec 2005 Trader Rating: (0)	Re: Rear Differential Problem?? Either that diff cover needs tightening or somebody pulled those axles out during a suspension swap. Check the fluid levels ASAP, no, yesterday. If it is low, get some Subaru LSD fluid and throw it in there. Don't break your temperature probe.

05-30-2008, 09:52 AM	#5
Turninconcepts.com Authorized Vendor Car: 04/08STI 95SVX 86E30 Posts: 5,071 Join Date: Jul 2003 Trader Rating: (53)	Re: Rear Differential Problem?? That's nothing bad, and looks about normal. It's just residual coming out the vent at the top. If it were wet, and all over stuff then I'd be concerned.

05-30-2008, 11:02 AM	#6
polyol Spec C Club Car: 04 STi Fav Mod: Motor Mounts Location: Eugene Posts: 2,267 Join Date: Oct 2004 Trader Rating: (0)	Re: Rear Differential Problem?? Yeah, do you see any oil on pavement were you park? This ad is not endorsed by this member. Please register or login to hide this ad.