unclaimedwalnut Posted February 6, 2014 Share Posted February 6, 2014 Is their a maintenance sticky that I am missing. I am curious about what fluids to use in everything no so much what Subaru says but what is actually best for the car. Like tranny ATaand MT, brake, diff oil, friction mod if necessary, and just general maintenance on the fourth gen. Sorry if this is repetitive. Link to comment Share on other sites More sharing options...
Max Capacity Posted February 6, 2014 Share Posted February 6, 2014 For MT and diff's, Subaru Extra S is the best, I bought a 5 gallon pail for $130 from the dealer. Amsoil severgear is also good. I have used that too. There is also a cocktail of 3qt's redline lightweight shockproof and .8qt Motul 300. and 300 inthe rear diff, If the tranny has issues. I don't do 5eat's. Coolant I use Prestone 50/50 mix or Peak Global, my wgaon has a mixture of both. http://people.csail.mit.edu/ilh/vacation/ that may help you too. 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...
unclaimedwalnut Posted February 6, 2014 Author Share Posted February 6, 2014 Is their a friction mod for the diff Link to comment Share on other sites More sharing options...
HAMMER DOWN Posted February 7, 2014 Share Posted February 7, 2014 Is their a friction mod for the diff No Mileage:331487 Retired/Sold Link to comment Share on other sites More sharing options...
Redryan98 Posted February 7, 2014 Share Posted February 7, 2014 Is their a maintenance sticky that I am missing. I am curious about what fluids to use in everything no so much what Subaru says but what is actually best for the car. Like tranny ATaand MT, brake, diff oil, friction mod if necessary, and just general maintenance on the fourth gen. Sorry if this is repetitive. Here's my maintenance plan. Not saying this is necessarily the "right" way, just a suggestion. Oil - Rotella T6 every 3k miles Trans and Dif - Subaru fluid every 30k miles Coolant - Subaru every 50k miles Brake/Clutch - Subaru (since I don't race/autox) every 2 years PowerSteering - Subaru or any other approved fluid every 3 years Filter - Subaru OE, whenever its dirty Plugs - NGK every 50k miles Link to comment Share on other sites More sharing options...
rob-2 Posted February 7, 2014 Share Posted February 7, 2014 Is their a friction mod for the diff No My subi dealer charged me $9/diff for a friction mod when I had the car serviced at 60k just after we bought it. What did they put in there? Good wishes? I replaced it without a friction mod at 90K and will be doing another fluid change on the diffs soon. Thoughts? Link to comment Share on other sites More sharing options...
JmP6889928 Posted February 7, 2014 Share Posted February 7, 2014 Amsoil Severe Gear 75W/90 and no friction mod. Link to comment Share on other sites More sharing options...
unclaimedwalnut Posted February 8, 2014 Author Share Posted February 8, 2014 I don't know a lot about Subaru's but I do know quite a bit about Ford's and car stuff in general. I worked for Ford for 5 years and went to that awesome auto school that is u.t.i. What I do know is there is a big difference in having friction modifier in a diff and not. So I will consult Subaru on this to make sure when I do it. I would almost suspect it would have to have it cause of the limited slip. Link to comment Share on other sites More sharing options...
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