read end/front diff

[dynomax]

Want to switch my rear and front diff out for synthetic. Problem is, I can't find GL-5 80W90 in syntheitc, only GL-5 75W90.

Only Syn I can find here is the motormaster (Canadian tire) brand which I'm not going to use and Valvoline SynPower.

http://www.valvoline.com/products/consumer-products/grease-gear-oil/gear-oil/59

 

 

Mine is the HG43 LSD, i did the spin test, jacked up, spun wheel, both spin same way, so I know I need the LSD oil, and it calls for 80W90

 

So is the 75W90 syn too light?

 

Am I right going syntheitc? I use mobil 1 syn Motor & ATF oil now. I also lvie in Canada, and todays temp is -17 deg C (0deg F)

Edited February 29, 2012 by dynomax

[Towncivilian]

75W-90 will be fine, it's still within the range of a 90 grade gear oil at operating temperature. Being a 75W and synthetic, it'll be thinner at cold startups which is preferable.

[pathfounder]

If it doesn't say "LSD" or something along those lines right on the bottle, avoid. "Synthetic" is not the same thing.

[Towncivilian]

Many gear oils already come with LS additive; it'll be stated clearly on the bottle.

[dynomax]

Many gear oils already come with LS additive; it'll be stated clearly on the bottle.

 

Did the R50's of the 2001-2004 vintage come with anything other than an LSD? There wouldnt be any open diffs on these 4wd trucks would there?

[pathfounder]

Did the R50's of the 2001-2004 vintage come with anything other than an LSD? There wouldnt be any open diffs on these 4wd trucks would there?

 

I don't know the answer directly, but I'd be pretty surprised if it was "yes". LSD are more expensive to make than an open diff, and 99.9% of the population wouldn't know they had one in their vehicle. Most vehicles don't even come with it as an option, so I doubt Nissan would put them in every one. Of course, I could be wrong.

[Nefarious]

if the wheels are spinning the same way, you have a LSD. You probably have an LSD in the rear and an open diff in the FRONT. there will be a sticker on the back of the rear diff. i dont think r50 had lsd as an option in the front diff but I could be wrong. jack up the front and spin one side see if the other side spins the same... it should also have a sticker if its a factory front lsd i believe. someone correct me if im wrong I thought only aussy trucks had front lsd as an option.

[Towncivilian]

I have a 2WD open diff.