Bigjohn Posted January 30, 2017 Share Posted January 30, 2017 I've started changing the oils in my Bedford MW for the first time and have noticed that the differential oil is much thicker than the gearbox oil. The drivers manual says that they should be the same viscosity but this is clearly not what I have. What would you folks recommend? 80/90 or something thicker? If thicker, then what are the disadvantages? Quote Link to comment Share on other sites More sharing options...
Grasshopper Posted January 31, 2017 Share Posted January 31, 2017 Thicker oil is less likely to leak out, and may be better for hot climates. Perhaps the gearbox had the wrong grade of oil? Quote Link to comment Share on other sites More sharing options...
ARMYPHOTOS Posted January 31, 2017 Share Posted January 31, 2017 We have used Penrite Gear Oil - Trans Oil 140 in both gear box and diff for many years. It is designed for vintage vehicles and has no additives to damage yellow metal bearings, shims etc. ie it is not a Hupoid type oil. We have had no problems with our MWD, MWR , OSS and QL Bedfords using this. Quote Link to comment Share on other sites More sharing options...
Bigjohn Posted January 31, 2017 Author Share Posted January 31, 2017 Thanks guys, 140 ordered. Quote Link to comment Share on other sites More sharing options...
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