SOA 93 Posted April 13, 2007 Share Posted April 13, 2007 From what I've read it seems when you do a filter and oil change on a ZF you only renew 50% of the oil the other 50% stays in the torque convertor. Anyone know any methods of renewing all of it without dissasembly? Some say change it, run it for a few miles then change it again so you've got at least 75% new oil in there, any better solutions? Pumps and suction etc? Andy Quote Link to comment Share on other sites More sharing options...
BogMonster Posted April 13, 2007 Share Posted April 13, 2007 Take the drain bung out and drive it till it stops I don't know, but I would be interested to find out too. Quote Link to comment Share on other sites More sharing options...
western Posted April 13, 2007 Share Posted April 13, 2007 RAVE says drain the gearbox & remove it's oil pan & clean the oil screen/refit/refill. itdoesn't mention draining oil from torque converter at all Quote Link to comment Share on other sites More sharing options...
Pete Attryde Posted April 14, 2007 Share Posted April 14, 2007 When I did mine I went for the change the oil and filter, then drive for about 500 miles and change just the oil again, the oil that came out on the change was certainly quite dirty implying that it flushed quite a bit out of the torque converter. The drips that are now appearing on the bottom of the box from a leak that I can't as yet find are quite clean which indicates to me that most of the very old oil that was in the system has been removed. HTH Pete Quote Link to comment Share on other sites More sharing options...
Les Henson Posted April 14, 2007 Share Posted April 14, 2007 The only way to drain the torque converter is to remove it and let the oil drain out of the sgaft hole. Auto box oil changes are nearly always a percentage of contents thing. Les. Quote Link to comment Share on other sites More sharing options...
Mark90 Posted April 14, 2007 Share Posted April 14, 2007 Undo the oil cooler pipes and put one in a bucket of new ATF and the other in a empty bucket, run until new ATF comes out. You'll need to find out which way round the pipes go by trial and error as the flow changes depending on what gear you are in. Not tried this method myself so don't blame me if you end up with ATF all over your drive. Quote Link to comment Share on other sites More sharing options...
SOA 93 Posted April 14, 2007 Author Share Posted April 14, 2007 Undo the oil cooler pipes and put one in a bucket of new ATF and the other in a empty bucket, run until new ATF comes out. You'll need to find out which way round the pipes go by trial and error as the flow changes depending on what gear you are in. Not tried this method myself so don't blame me if you end up with ATF all over your drive. I was thinking along those lines, maybe have a play next week. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.