what diff oil for 2005 sti? 90ls or 75w90
#1
what diff oil for 2005 sti? 90ls or 75w90
hi guys
im a newbie to the forum & i just wondered if anyone can point me in the right direction.im having abit of trouble finding the recommended oil for the rear diff on my 05 sti,iv read many threads & contacted various specialists & also subaru at nottingham & the answers iv had puzzle me.the owners handbook states gl-5 75w90 except sti with dccd with a temp chart,then at the side another temp chart with 90 in the arrow stateing sti version with dccd.iv been advised i should be using a 90LS oil as the diff is lsd & needs the LS oil as it is mineral oil-based & contains friction modifiers for the clutches in the rear diff,but after ringing scooby clinic,graham goode & subaru iv been advised 75w90 semi synthetic,75w90 synthetic 75w80 semi synthetic with no mention of it needing the LS propertys & 90LS.can i use a GL-5 75w90LS oil or should i be using just 90LS & should it be semi synthetic or fully syn? any info would be helpful
cheers jay
im a newbie to the forum & i just wondered if anyone can point me in the right direction.im having abit of trouble finding the recommended oil for the rear diff on my 05 sti,iv read many threads & contacted various specialists & also subaru at nottingham & the answers iv had puzzle me.the owners handbook states gl-5 75w90 except sti with dccd with a temp chart,then at the side another temp chart with 90 in the arrow stateing sti version with dccd.iv been advised i should be using a 90LS oil as the diff is lsd & needs the LS oil as it is mineral oil-based & contains friction modifiers for the clutches in the rear diff,but after ringing scooby clinic,graham goode & subaru iv been advised 75w90 semi synthetic,75w90 synthetic 75w80 semi synthetic with no mention of it needing the LS propertys & 90LS.can i use a GL-5 75w90LS oil or should i be using just 90LS & should it be semi synthetic or fully syn? any info would be helpful
cheers jay
#3
thanks 53WRX,is that the motul 90pa? how can these so called specialists get it so wrong,it beats me when they should have access to all the correct info,especially a main dealer,know wonder theres so many folk with premature diff wear & other issues.
#5
thanks tim for for your input,just a couple of questions,would the sae 90 mineral based oil need changing alot sooner say 15-20k & would it cope with a winter like we just had?.would the REDLINE Synthetic Gear Oil 75W-90 GL5 or the Silkolene SILKTRAN SYN 5 75W-90 be a better choice?
thanks again cheers jay.
thanks again cheers jay.
Trending Topics
#12
Scooby Regular
iTrader: (11)
FYI, my question was clarified with a phonecall to AP who told me that AP never made the differentials for the Impreza, in fact Fujitsu Heavy Industries bought the whole project from AP years ago and manufactured them in Japan.
He said because it is not a plate diff I should use a normal oil with the grade the manufacturer suggests.
So I will go with 75W-90 that the japanese maintenance book suggests, the same as the front diff.
At last I got there.
He said because it is not a plate diff I should use a normal oil with the grade the manufacturer suggests.
So I will go with 75W-90 that the japanese maintenance book suggests, the same as the front diff.
At last I got there.
#13
Scooby Regular
iTrader: (1)
Make sure you get this right. I put the wrong oil in mine and it was awful clonking and making strange noises. It didn't feel right it was locking up when turning. Changed it for motul 90Pa and has been fine ever since. Mine is a jdm my05 STi with dccd.
Take my advice mate I have been there and done it.
Take my advice mate I have been there and done it.
#15
Scooby Regular
iTrader: (11)
Thanks.
Yours has DCCD and helical diffs, mine's not DCCD and has Suretrac diffs.
The title is confusing, I should have opened a new thread and not posted here as it may confuse people.
According to the japanese manual
Attachment 55291
which translates to
Attachment 55292
For >2005 cars with DCCD though you are right, the correct oil to use is 90 (as the above manual also indicates).
Yours has DCCD and helical diffs, mine's not DCCD and has Suretrac diffs.
The title is confusing, I should have opened a new thread and not posted here as it may confuse people.
According to the japanese manual
Attachment 55291
which translates to
Attachment 55292
For >2005 cars with DCCD though you are right, the correct oil to use is 90 (as the above manual also indicates).
Last edited by fpan; 28 January 2019 at 07:28 PM.
#16
Scooby Regular
iTrader: (7)
Join Date: Jun 2010
Location: Rugby
Posts: 798
Likes: 0
Received 0 Likes
on
0 Posts
Make sure you get this right. I put the wrong oil in mine and it was awful clonking and making strange noises. It didn't feel right it was locking up when turning. Changed it for motul 90Pa and has been fine ever since. Mine is a jdm my05 STi with dccd.
Take my advice mate I have been there and done it.
Take my advice mate I have been there and done it.
#20
Scooby Regular
iTrader: (2)
Join Date: Sep 2012
Location: Essex
Posts: 1,250
Likes: 0
Received 0 Likes
on
0 Posts
So use 90 in my rear diff and 75/90 in the box in my STI?
This may be reason of my strange noise I have when parking on full lock,only does it when hot! See my thread on weird noise.
This may be reason of my strange noise I have when parking on full lock,only does it when hot! See my thread on weird noise.
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Car Parts For Sale
1
18 November 2015 07:49 AM
Scooby-Doo 2
Wheels And Tyres For Sale
1
09 September 2015 06:51 PM