markcro Posted September 30, 2008 Share Posted September 30, 2008 I can never get the searches to find anything useful on any forum... :-/ As a total newbie to classic ownership I am gathering as much info as I can get to prepare me for the work ahead! I am wondering what gearbox oil/ diff oil do you use? The manual says EP90 oil for both (as well as the lower steering swivel) but any of the motorfactors around only have 75w90, etc.So what do you recommend/ use?Thanks. Link to comment Share on other sites More sharing options...
Clive Posted September 30, 2008 Share Posted September 30, 2008 I use comma ep80/90. Look for a GL4 spec oil. Long story, but trust me....You are right that "normal" oils seem to be going out of fashion.Clive Link to comment Share on other sites More sharing options...
thealligator Posted September 30, 2008 Share Posted September 30, 2008 What ever I can find locally in the motor factors 80 or 90 or a 80/90But I think there is a bit of a debate over Overdrive boxs I have read somewhere that it should engine oil 20/50 not sure thow.Cheers Al Link to comment Share on other sites More sharing options...
billspit Posted September 30, 2008 Share Posted September 30, 2008 I use non detergent 30 weight in my OD. Link to comment Share on other sites More sharing options...
sbarc Posted September 30, 2008 Share Posted September 30, 2008 Here's an excellent article with plenty of info on this topic from the Quantum Mechanics website......they specialize in British Gearboxes (transmissions).I have no connection to them but I did find this article well worth reading.http://www.quantumechanics.com/categories.php?op=newindex&catid=11 Link to comment Share on other sites More sharing options...
cook1e Posted September 30, 2008 Share Posted September 30, 2008 I picked up some Castrol EP90 GL4 at the TSSC club stand at the Duxford Triumph show a couple of weeks ago. So the TSSC shop do stock it if you can't find a local supplier. Link to comment Share on other sites More sharing options...
sparky_spit Posted October 1, 2008 Share Posted October 1, 2008 Halfords do a EP80/90 GL4 spec gear oil. That's what I use for diff and OD box. Link to comment Share on other sites More sharing options...
Richard B Posted October 1, 2008 Share Posted October 1, 2008 IIRC EP90 for topping up. EP75w-80 or EP75w-90 for filling from empty. Link to comment Share on other sites More sharing options...
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