Don Del Posted October 1, 2013 Share Posted October 1, 2013 Hi, I have a 1999 Defender V8 110 station wagon, it is essentally a Td5 with a V8 dropped in for export. It is due for a change of oils in the drive train and I have been checking as to the oils I should get. The gearbox and transfer case are sraightforward with Texaco MTF94 and Castrol Syntrax 75W/90 respectively. I could go with Hypoid gear oil for the axles but I have seen a recommendation on this site to use Syntrax instead. Any comments welcome! Cheers, Del Quote Link to comment Share on other sites More sharing options...
Jaytee Posted October 1, 2013 Share Posted October 1, 2013 I have stuck with standard 75w 90 oils in both diffs and that has done me several hundred thousand miles without problem. I also change it every 12000. Unless experiencing extreme temperatures hot and cold I don't personally think there is a particular benefit in diffs. I have experienced leaks from the Txfr box since using the Syntrax (have to with the Rocky Mountain overdrive) as it is very thin when cold. Quote Link to comment Share on other sites More sharing options...
tacr2man Posted October 1, 2013 Share Posted October 1, 2013 In extreme heat or cold then a full synthetic has several advantages . i have used Redline synthetic in my diffs on my 110 V8 csw for years . Less drag when cold , copes with high temps better, long service interval. works as a lubricant when water contaminated , as it doesnt emulsify . JMHO Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted October 4, 2013 Share Posted October 4, 2013 I've seen Red Line fully synthetic recommended on here for use in R380 g'box, but not seen it before for use in diffs. What grade do you recommend, please? TIA, Mike Quote Link to comment Share on other sites More sharing options...
tacr2man Posted October 5, 2013 Share Posted October 5, 2013 I use "shokpruf " in transfer box , and MTL in main box, In diffs i use the 75/140 . If you go on REdline oils site you can read the specs as they have some newer oils out , mine still has the older as you dont need a lot of changes !! Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted October 11, 2013 Share Posted October 11, 2013 Thanks for the info, Tacr2man. Sorry for the late reply, but I've just got back from a road trip to Inuvik, NWT, the furthest north you can drive in summer in Canada, and internet access was pretty sparse! Mike Quote Link to comment Share on other sites More sharing options...
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