Sidewaysfun Posted January 30, 2018 Share Posted January 30, 2018 Has anyone tried this Millers oil with a 915 box? https://www.opieoils.co.uk/p-69297-millers-oils-pistoneeze-classic-differential-oil-90-gl5.aspx It seems the right grade, Gl5. My car is going in for a good service, so going to swap out gearbox oil. I can get 5l for a very reasonable price (half price compared with Swepco!) I'd be interested to hear feedback, if any Cheers, Paul Link to comment Share on other sites More sharing options...
Leicestershire Posted January 30, 2018 Share Posted January 30, 2018 I can't see the full specification on my phone but the description says differential oil. If it is a diff oil then it may be wise to choose an alternative product. Link to comment Share on other sites More sharing options...
Sidewaysfun Posted January 30, 2018 Author Share Posted January 30, 2018 I'm glad I asked 🙈 Well spotted Leicestershire. Severe case of wood for trees there. Too busy looking at the GL5 grade and not notice a fundamental. Back to drawing board. Incidentally, the Motul oil I see on Opie website states GL4/GL5 grade... I'm a bit confused how it can be both? https://www.opieoils.co.uk/p-897-motul-motyl-gear-75w-90-car-gearbox-diff-oil.aspx Maybe I'd just be best forking out for Swepco 201, can't go wrong with that. 🤷♂️ I swear I've spent about 4 hours researching gearbox oil for the 915 and I'm full circle back to the beginning again... Link to comment Share on other sites More sharing options...
SilverWT Posted January 30, 2018 Share Posted January 30, 2018 You don't need anything fancy as long as it meets the spec and you change it regularly. This is fine... Link to comment Share on other sites More sharing options...
Henry Posted January 30, 2018 Share Posted January 30, 2018 (edited) Or this http://www.morrislubricantsonline.co.uk/ep-80w-90-gear-oil-gl5.html Edited January 30, 2018 by Henry Link to comment Share on other sites More sharing options...
Ian Comerford Posted January 30, 2018 Share Posted January 30, 2018 I use Motul 75/90 Technosynthese (spelling) which is according to the blurb good for hard shifting gearboxes. I think it feels better than the previous Swepco 201 Link to comment Share on other sites More sharing options...
strosek34 Posted January 31, 2018 Share Posted January 31, 2018 I drained the Swepco out of mine last summer and put in some Motul 75/90 same as Ian above, gear change seems a bit smoother. Link to comment Share on other sites More sharing options...
Sidewaysfun Posted January 31, 2018 Author Share Posted January 31, 2018 Thanks for the input guys, really appreciate it. I've opted for the Motul oil, I'm happy with the way my box shofts, just not happy paying Swepco prices if there's better on the market Paul Link to comment Share on other sites More sharing options...
Richot1989 Posted January 31, 2018 Share Posted January 31, 2018 Hi Guys, Is Motul 75/90 suitable for the G50 gearbox? Link to comment Share on other sites More sharing options...
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