limited slip differential?

[oz16us]

how can i tell if my ST has limited slip differential without a jack? I checked on the side of the driver door and it doesn't say if I do or if I don't. I'm planning on changing my differential oil and I need to know, if I'm suppose to use 80W-90 Premium or 75W-140 Synthetic with additive...if it did not matter, I would prefer to use the 75W-140 Synthetic...what are your thoughts? thx

 

[Kiliona]

the sticker on the door should give you an axle code

http://www.explorerforum.com/forums/showthread.php?t=309965

That'll tell you your gears and LS/NLS

OR you could do a burnout and see how many tire marks are left behind. (may be easier on gravel, any injury to yourself or your truck I take no responsibility for )

 

[oz16us]

i just looked at the sticker and no where does it say LS or NLS...it's a 2WD 2001..weird

 

[oz16us]

okay I found out my axle code is 42 which means its conventional not LSD according to the chart below. But can I still use synthetic 75w/140?
http://www.mysporttrac.com/shared/msgboard9e.asp?BOARDNAME=MSG&VIEW=1235957

 

[tenny]

okay I found out my axle code is 42 which means its conventional not LSD according to the chart below. But can I still use synthetic 75w/140?http://www.mysporttrac.com/shared/msgboard9e.asp?BOARDNAME=MSG&VIEW=1235957

yes