Q Catcher Posted March 13, 2020 Share Posted March 13, 2020 I've already put this same question in the VVC engine oil thread, but for anyone not reading that, my question is: which gearbox oil should I put in the 5-speed gearbox in my 2002 car? I think the 'box is a Ford T9 from the Sierra XR4i - or so I'm told. Link to comment Share on other sites More sharing options...
elie boone Posted March 13, 2020 Share Posted March 13, 2020 GL4 only spec gear oil ( which is a mineral gearoil ) Link to comment Share on other sites More sharing options...
CaterBram Posted March 13, 2020 Share Posted March 13, 2020 I use RED LINE Synthetic Manual Transmission 90 MT90 75W-90 in mine Link to comment Share on other sites More sharing options...
7 wonders of the world Posted March 13, 2020 Share Posted March 13, 2020 Redline MTL is a better option MT90 is a grade too heavy, Fill wiith 1.2ltrs from empty Link to comment Share on other sites More sharing options...
Sean2015 Posted March 13, 2020 Share Posted March 13, 2020 Since replacing my gearbox (T9) oil with Redline MTL the shifts are far smoother and slicker (normal road use). Link to comment Share on other sites More sharing options...
Ralph45 Posted March 14, 2020 Share Posted March 14, 2020 What weight Redline mtl? My searches come back with different ones the most common mt 90 75w90 or mt 90 75w80. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 14, 2020 Member Share Posted March 14, 2020 Discussion from 2015.Jonathan Link to comment Share on other sites More sharing options...
Nigel Riches Posted March 14, 2020 Share Posted March 14, 2020 Castrol Syntrax 75W90 does it for my box, Nigel. Link to comment Share on other sites More sharing options...
Area Representative admaraujo Posted March 14, 2020 Area Representative Share Posted March 14, 2020 Does this mean that Millers Oils CRX 75w-90 NT+ Competition full synthetic transmission oil, can't be used on the Type 9 gearbox? Link to comment Share on other sites More sharing options...
Q Catcher Posted March 14, 2020 Author Share Posted March 14, 2020 Many thanks, everybody. Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 14, 2020 Share Posted March 14, 2020 Key, as mentioned before is the GL4 rating. Link to comment Share on other sites More sharing options...
DJ. Posted March 14, 2020 Share Posted March 14, 2020 I just use Castrol EP80 / GL4 gearbox oil as the Sierra would have been filled with. The change is slightly notchy when cold but great when warmed up. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted March 15, 2020 Share Posted March 15, 2020 MTL is 75w80 Link to comment Share on other sites More sharing options...
Ralph45 Posted March 15, 2020 Share Posted March 15, 2020 Mtl 75w80 thank you Link to comment Share on other sites More sharing options...
StevehS3 Posted March 15, 2020 Share Posted March 15, 2020 Now that we have settled on an answer should that go somewhere in the Guides? Maybe in Guides or a new FAQ on fluids incorporating a summary of Andrew's excellent work on VVC oil?Same for the recent correct MOT emissions level discovery. Can that be captured somewhere along with the flowchart and table of values so it can be easily printed and taken to the test centre?If someone did a quick search these, and the many other useful pieces of information, should show up first and preferably without having to read several pages of discussion to get to the answer. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 15, 2020 Member Share Posted March 15, 2020 Exactly.Q Catcher: could you be persuaded to summarise all the contributions in one post, ready to be picked up as a Guide/ Wiki, please?Jonathan Link to comment Share on other sites More sharing options...
Q Catcher Posted March 16, 2020 Author Share Posted March 16, 2020 Well, on the strength of all the recommendations above, I've ordered 2 litres of Red Line MTL GL4 75w80. So my summary is:For the Ford T9 gearbox, which we believe was probably filled with Castrol EP80 GL4 back in the day, when it was on a Ford Sierra, the collective wisdom is now that Red Line MTL GL4 75w80 is the best modern equivalent and provides the best shift quality. GL4 is the most important part of the spec, i.e. don't use GL5. And the gearbox takes 1.2 litres from empty. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 16, 2020 Member Share Posted March 16, 2020 ThanksJonathan Link to comment Share on other sites More sharing options...
StevehS3 Posted March 16, 2020 Share Posted March 16, 2020 Where is the best place to keep this where it can easily be found in the future? Guides, FAQ, a new section on recommended fluids or maintenance? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 16, 2020 Member Share Posted March 16, 2020 I'd suggest a Guide. (Especially as Guides are now ready to become multiauthor Wikis.)Jonathan Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 16, 2020 Share Posted March 16, 2020 Is the box out or newbuild? They dont usually have a drain plug.Ian Link to comment Share on other sites More sharing options...
Q Catcher Posted March 16, 2020 Author Share Posted March 16, 2020 In my case, the gearbox is still on the car. So it's a case of accessing it from the underside of the car, removing the ruddy awkward filler plug with a shortened Allen key and using an electric pump to pump the old oil out. A job I relish - not! Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 16, 2020 Member Share Posted March 16, 2020 The warmer the easier.Jonathan Link to comment Share on other sites More sharing options...
eric Posted March 17, 2020 Share Posted March 17, 2020 I use red line heavy shock proof ( red ) in the gear box and the de dion rear axle . Perfect for me in a 1989 Sprint Caterham .With other GL4 oil I tested some problems , with this one it is fine as the Original Ford Oil that is no longer available . The red line product is not corrosive withe bronze parts of the gear box . Link to comment Share on other sites More sharing options...
Wrightpayne Posted March 17, 2020 Share Posted March 17, 2020 It is possible with care to remove the top cover, however, you are working blind for some of the bolt removal / refitting. The important / difficult bit is relocating the selector plate in the slot in the lid.Some people have also fitted a cap into the forward part of the lid to aid level checking, evacuation and filling. Mine has a welded on boss / VW sump plug others have used brass plumbing fittings. Link to comment Share on other sites More sharing options...
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