Canon20D Posted January 18, 2011 Share Posted January 18, 2011 Hey all Im noticing that if i'm in boost a fair amount during the week, that when i check my oil on Monday morning its a fair bit low (1/2 qt or so) when im Not on boost for most of the week, its usually not low, or down only slightly. A fellow Subaru guy, who's a tech at a dealer, said its probably my PVC valve if i haven't replaced it (05, 108K) because it wont separate the oil from the air and throws it into the intake instead of back into the block. a: is this true and B: if so, what is the PN? Link to comment Share on other sites More sharing options...
whitetiger Posted January 18, 2011 Share Posted January 18, 2011 its not a PVC, is a PCV. Positive crankcase ventilation. its like $5 at the dealer, and they always have them in stock. just swing by and pick one up. so let me get this straight. if you drive hard and check the oil, its looks 1/2 qt down, but if you then drive it easy, the oil looks normal again? Link to comment Share on other sites More sharing options...
Canon20D Posted January 18, 2011 Author Share Posted January 18, 2011 so let me get this straight. if you drive hard and check the oil, its looks 1/2 qt down, but if you then drive it easy, the oil looks normal again? I asked about it at my local dealership, a very good place, ive dealt with others not so good, and they said it was a non-serviceable part, and no replacement existed. I called Subaru parts in MD, for a quote on PN 11815AB790 (which what my subaru tech friends said the PCV assembly is) they said it was 52.94. Let me clarify my statement, lets say that I change the oil, and fill it. at the end of the first week, if i drive it hard, its at 75% full. (maybe 1/2-2/3 quart low) If I refill it, and drive it easy, its at 95% after another week... Link to comment Share on other sites More sharing options...
LosAngelesLGT Posted January 18, 2011 Share Posted January 18, 2011 PCV on our car takes some doing to replace compared to other cars. http://legacygt.com/forums/showthread.php/pcv-valve-replacement-95003.html?t=95003&highlight=pcv I bet your TMIC is oily too. I definately needed to change out my PCV: My engine was not eating oil, my FMIC contained my missing oil! Link to comment Share on other sites More sharing options...
whitetiger Posted January 18, 2011 Share Posted January 18, 2011 I asked about it at my local dealership, a very good place, ive dealt with others not so good, and they said it was a non-serviceable part, and no replacement existed. I called Subaru parts in MD, for a quote on PN 11815AB790 (which what my subaru tech friends said the PCV assembly is) they said it was 52.94. Let me clarify my statement, lets say that I change the oil, and fill it. at the end of the first week, if i drive it hard, its at 75% full. (maybe 1/2-2/3 quart low) If I refill it, and drive it easy, its at 95% after another week... if you continue to drive hard, does the oil level drop more? the marks on the dip stick dont signify a unit of measure. when you say 1/2 qt low, where on the dip stick is the oil at. Link to comment Share on other sites More sharing options...
Canon20D Posted January 18, 2011 Author Share Posted January 18, 2011 if you continue to drive hard, does the oil level drop more? the marks on the dip stick dont signify a unit of measure. when you say 1/2 qt low, where on the dip stick is the oil at. I dont know, If i check it and its low, i refill There have been a few times ive noticed it low. week to week the lowest ive seen it is barely above the L line. This was after not checking it for a few weeks and when i did get around to it, there was nothing on the stick Link to comment Share on other sites More sharing options...
whitetiger Posted January 18, 2011 Share Posted January 18, 2011 here it is- http://www.fredbeansparts.com/index.php/subaru-05-06-legacy-gt-pcv-assembly.html its still cheap. Link to comment Share on other sites More sharing options...
Canon20D Posted January 18, 2011 Author Share Posted January 18, 2011 here it is- http://www.fredbeansparts.com/index.php/subaru-05-06-legacy-gt-pcv-assembly.html its still cheap. Wow lots cheaper, are those clamps the one that are hard to replace? They look like the squeeze open types, why are they so hard to do? (deciding on if i want to tackle this or let me stealership do it lol) Link to comment Share on other sites More sharing options...
whitetiger Posted January 18, 2011 Share Posted January 18, 2011 if you feel comfortable taking the TMIC off, then you can do it yourself. Link to comment Share on other sites More sharing options...
Canon20D Posted January 19, 2011 Author Share Posted January 19, 2011 if you feel comfortable taking the TMIC off, then you can do it yourself. Hahaha - Nope, i had a hard enough time swapping injectors, dont wanna mess around with the TMIC. of course, that Does mean its gonna cost an arm and leg doesnt it :/ Link to comment Share on other sites More sharing options...
lgtftw Posted January 19, 2011 Share Posted January 19, 2011 if you swapped injectors you can do this, lol. I want to do mine as well not sure if you want to wait 'till then so I can give some instructions. Link to comment Share on other sites More sharing options...
Canon20D Posted January 19, 2011 Author Share Posted January 19, 2011 its got this many miles on it.. I can wait a couple weeks, still gotta get the assembly from FredBeans anywho. Link to comment Share on other sites More sharing options...
whitetiger Posted January 19, 2011 Share Posted January 19, 2011 removing the TMIC is a piece of cake. 3 bolts and 2 hose clamps. Link to comment Share on other sites More sharing options...
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