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What oil for rear diff?
Posted: Thu Aug 12, 2010 10:36 pm
by myfirstE21
hi all,
does anyone know what oil i should put in the rear diff of my 316? i want to change it as it looks like its never been done?
cheers
steve
Re: What oil for rear diff?
Posted: Fri Aug 13, 2010 12:02 am
by nas80
you can use pretty much anything - 75w/80 or 80w/90 etc etc.
Re: What oil for rear diff?
Posted: Fri Aug 13, 2010 12:30 am
by myfirstE21
sweet 80/90 it is then as i have loads at work
cheers !
Re: What oil for rear diff?
Posted: Fri Aug 13, 2010 1:05 am
by E21meister
Very timely subject - just done my gearbox (75w/80 to GL-4 spec - don't use diff oil) and diff (75x/90 GL-5 spec) oils today. I've always used Castrol as this is one aspect of maintenance you don't want to be using budget lubricants on.
And I'd do the gearbox oil at the same time if I were you. The gearbox oil in mine smelt like it had last been changed around the time England last won the World Cup, it had probably burned at some point. Gives you an excuse to clear of all of the swarf on the drain plug magnet too.
Re: What oil for rear diff?
Posted: Fri Aug 13, 2010 12:28 pm
by tommi_e21
is there any oil additves for differentials like slick 50???
Re: What oil for rear diff?
Posted: Sat Aug 14, 2010 12:02 am
by E21meister
austin25uk wrote:is there any oil additves for differentials like slick 50???
Amsoil was a favourite back in the day, did make a difference in a knackered old 'box I had in a Mini I had once:
http://www.amsoil.com/storefront/fgr.aspx
You could always try this stuff:
https://www.xadoshop.co.uk/shop/catalog ... IOzhukzGxO
More of this teflon type snake oil by the looks of it. I'd pop a bollock if it worked but you never know. Personally I wouldn't put any additives in a gearbox/diff unless it's completely shafted and you have no other choice.