Differential.

Old 05-23-2009, 06:48 AM
  #1  
Tech Elite
Thread Starter
iTrader: (45)
 
tkhoo's Avatar
 
Join Date: Jun 2003
Location: Somewhere in Penang Island, Malaysia
Posts: 3,495
Trader Rating: 45 (98%+)
Default Differential.

Hi, may I know why my differential oil going black when I open up? Can a differential oil going less or mean left 30% inside the differential case after 2 months run ( ~8 times ) if no leaking? Thanks.
tkhoo is offline  
Old 05-23-2009, 07:01 AM
  #2  
Tech Adept
iTrader: (1)
 
madmaxx's Avatar
 
Join Date: Jul 2008
Location: toronto
Posts: 192
Trader Rating: 1 (100%+)
Default

if you don't fill the diif to the top you leave air in the diff and it aerate's the oil breaking it down faster....

my $0.02
madmaxx is offline  
Old 05-23-2009, 07:20 AM
  #3  
Tech Elite
Thread Starter
iTrader: (45)
 
tkhoo's Avatar
 
Join Date: Jun 2003
Location: Somewhere in Penang Island, Malaysia
Posts: 3,495
Trader Rating: 45 (98%+)
Default

Originally Posted by madmaxx
if you don't fill the diif to the top you leave air in the diff and it aerate's the oil breaking it down faster....

my $0.02
Hi, I always filled 80-90% full and close. Is that consider ok? May I know what you mean "it aerate's the oil breaking it down faster"? Thanks.
tkhoo is offline  
Old 05-23-2009, 07:33 AM
  #4  
Tech Master
iTrader: (30)
 
Join Date: Mar 2008
Posts: 1,506
Trader Rating: 30 (100%+)
Default

you hsould fill diffs to just pass the cross bars meaning just above where the two shafts cross and as for the oil you should change it after a few track days it want it to feel the same all the time diff. fluid breaks down and turns the dark color yhour speaking of
jewn_beef is offline  
Old 05-24-2009, 10:28 PM
  #5  
Tech Elite
Thread Starter
iTrader: (45)
 
tkhoo's Avatar
 
Join Date: Jun 2003
Location: Somewhere in Penang Island, Malaysia
Posts: 3,495
Trader Rating: 45 (98%+)
Default

Originally Posted by jewn_beef
you hsould fill diffs to just pass the cross bars meaning just above where the two shafts cross and as for the oil you should change it after a few track days it want it to feel the same all the time diff. fluid breaks down and turns the dark color yhour speaking of
oic....just filled over the cross bar...I used to filled almost full of the differential case Ok, I will follow your advise on next service. You mean the diff oil turn to dark colour is normal and it turn to dork due to over used? Please advise. Thanks.
tkhoo is offline  
Old 05-24-2009, 11:48 PM
  #6  
Tech Master
 
Join Date: Aug 2006
Location: Oceanside CA
Posts: 1,075
Default

The gears inside the diff are aluminum & rubbing together even in oil will cause slight wear at worst & a continual polishing at best & the tiny alum particles is what turns the oil dark gray.Its normal & a little leaking out past the o-rings during use is normal also for most diffs.
butch man is offline  
Old 05-25-2009, 01:04 AM
  #7  
Tech Elite
Thread Starter
iTrader: (45)
 
tkhoo's Avatar
 
Join Date: Jun 2003
Location: Somewhere in Penang Island, Malaysia
Posts: 3,495
Trader Rating: 45 (98%+)
Default

Originally Posted by butch man
The gears inside the diff are aluminum & rubbing together even in oil will cause slight wear at worst & a continual polishing at best & the tiny alum particles is what turns the oil dark gray.Its normal & a little leaking out past the o-rings during use is normal also for most diffs.
OIC.......because of the aluminium rubbing and cause the diff oil going dark.........So in my case it was normal and only thing is I need a little hardworking to change the diff oil regular, right? :
tkhoo is offline  
Old 05-25-2009, 06:54 AM
  #8  
Tech Lord
iTrader: (8)
 
Integra's Avatar
 
Join Date: Dec 2006
Posts: 12,489
Trader Rating: 8 (100%+)
Default

basically yes...and you DO NOT fill the cup right up to to the top...you only go as high as the cross pins as Filling the diff right up will cause inconsistency in the diff itself....air in the diff oil is Nothing you will get away from...they are Not 100% sealed units.
Integra is offline  

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.