_karu_ Posted April 11, 2013 Share Posted April 11, 2013 Hi, I got a question about front diff and transmission case for my 05 Legacy 2.5i NA. A mechanic from a local reputable tuning shop is saying that my front diff is actually in the transmission case and therefore shares lubrication with ATF. For that reason he said that front diff service is basically transmission fluid replace. Is he correct? I'm giving him all the benefit of doubt I could give since he's not just from any auto repair shop. Could he perhaps confuse my car for different Subaru model? Is there any Subaru model that has the front diff in the transmission case? I've read DIY thread about replacing front diff fluid and in that thread, 75W90 fluid was used. I can't imagine using ATF-HP in differential. Link to comment Share on other sites More sharing options...
Max Capacity Posted April 11, 2013 Share Posted April 11, 2013 As far as I know, the 5eat and 4eat that I think you have have a separate case for the front diff and automatic transmission. I'll send you the service manuals in a PM In the 5mt the front diff is in the same case and shares the 75w-90 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
_karu_ Posted April 11, 2013 Author Share Posted April 11, 2013 ^Thanks! That is it. He thought that my car is a manual car. Coming from tuning shop background and me being local forum member, he probably assumed that my car is MT. Link to comment Share on other sites More sharing options...
rob-2 Posted April 11, 2013 Share Posted April 11, 2013 As far as I know, the 5eat and 4eat that I think you have have a separate case for the front diff and automatic transmission. I'll send you the service manuals in a PM In the 5mt the front diff is in the same case and shares the 75w-90 You are correct. 2 diffs, 1 tranny. Two different fluids. Front diff is open and not connected to tranny. Link to comment Share on other sites More sharing options...
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