best differential fluid? and tranny fluid?
 

hey guys!

I'm going to be doing my differential and transmission fluids this weekend. I was just wondering if what would be the best fluids for these jobs?
I'm about to pull the trigger for either Castrol or Royal Purple 75W90 for diff fluid, and just use OEM fluid for transmission fluid.

Any other recommendations?

Thanks guys!

You forgot to ask which motor oil is the best. Your only real choice is traditional or full-synthetic? As long as it meets the SAE specs demanded by Infiniti, you're good to go.

Motul or Nissan fluid

I used Redline in the transmission, Motul in the differential.

I use Nissan in the tranny and Motul Pa90 in the rear diff and gear 300 synthetic in the front differential...what Motul do you guys use? I'm wondering if my use of Pa90 is out of date cause its been getting harder and harder to get locally and when i do find it its collecting dust on the shelf

Thanks for all the replies folks! I'll be buying some OEM tranny fluids and Motul differential oil!

Cheers,

Motul 75-90

I tell ya, this is no different than a "what's the best oil" thread. Ask ten people, you'll get five answers. They're all good as long as they meet Nissan's weight spec. Again, the only choice is synthetic or not.

Agreed!

Is there a huge differenxe between the Motul 75W-90 Gear 300 vs Motul 75W-90 Gear 300LS?

I think it depends on whether you have an "LS" if you don't probably no difference, if you do and your FD was noisy without the additives then probably yes

FD? Front Differential? I drive a 13' Infiniti G37 Coupe RWD IPL haha so I'm guessing I'll need the LS Motul then?

FD= Final drive. but yes if you have the IPL it should have an LSD and need the additive...

Thank you so much for all your replies!

Mobil 1 front & rear diffs. Valvoline Maxlife with Lubeguard platinum for transmission (three time drain & fill procedure). As stated, brands are a personal choice. BTW, the Maxlife has worked wonderfully in transmission and I currently have about 20,000 miles on changed fluid.

Never had bad experience with motul and this was on street and track cars. They also have great cs if you have issues