MikeDB Posted July 5, 2016 Share Posted July 5, 2016 Does anybody know the correct size for the square tool to undo the rear diff fill plug. I had a universal tool which seemed to be 12mm but it broke under loading so need to buy the correct tool Quote Link to comment Share on other sites More sharing options...
JamesJDMwagon Posted July 5, 2016 Share Posted July 5, 2016 Isn't it just a half inch ratchet? Quote Link to comment Share on other sites More sharing options...
Mr B Posted July 5, 2016 Share Posted July 5, 2016 13mm square, if tight proper decent 13mm plug sockets work way better ... Quote Link to comment Share on other sites More sharing options...
JamesJDMwagon Posted July 5, 2016 Share Posted July 5, 2016 5 minutes ago, Mr B said: 13mm square, if tight proper decent 13mm plug sockets work way better ... Isn't 13mm half an inch? Quote Link to comment Share on other sites More sharing options...
Sandals Posted July 5, 2016 Share Posted July 5, 2016 14 minutes ago, JamesJDMwagon said: Isn't 13mm half an inch? It is indeed... 1 Quote Link to comment Share on other sites More sharing options...
Mr B Posted July 6, 2016 Share Posted July 6, 2016 15 hours ago, JamesJDMwagon said: Isn't 13mm half an inch? 15 hours ago, Sandals said: It is indeed... Not exactly, it close . . . 26mm is not an inch . you will find quality 13mm drain wrench sockets a tighter fit & less likely twist out on tight plugs . Quote Link to comment Share on other sites More sharing options...
Sandals Posted July 6, 2016 Share Posted July 6, 2016 13mm is 0.511 inches. Yeh it's not going to be exact as it's a different measurement... but it's near enough to use a half inch ratchet 1 Quote Link to comment Share on other sites More sharing options...
MikeDB Posted July 18, 2016 Author Share Posted July 18, 2016 I found the correct tool on eBay and it's just arrived but the diff plug doesn't seem to want to move. Can somebody confirm it is normally threaded please, i.e. anti-clockwise to undo. Quote Link to comment Share on other sites More sharing options...
Mr B Posted July 19, 2016 Share Posted July 19, 2016 anticlockwise to undo. if reel tight be sure plug hole cleaned out so square socket fits deeply so less chance of turning itself out the plug hole . problem using 1/2 inch ratchet or extensions is tip is tapered & domed so don't get full depth grip plus it slightly too small, works ok until get tight ones, then it rounds the plugs out & I get the job of removing them by welding a bolt into the fooked plug hole . If don't budge try some gentle heat. I always refit these plugs with 3 turns of PTFE tape as doesn't weep, no need do murder tight plus it acts as barrier between the 2 differing metals stopping corrosive seizing issues ... 1 Quote Link to comment Share on other sites More sharing options...
KlassicSubi Posted June 8, 2017 Share Posted June 8, 2017 Hi, is it the same size tool if changing a manual transmission fluid? I have an Impreza 1999 GC8. Thanks Quote Link to comment Share on other sites More sharing options...
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