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Help best differential fluid? and tranny fluid?

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Old 05-16-2018, 01:05 AM
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Meez403
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Smile 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!
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Old 05-16-2018, 01:57 AM
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slartibartfast
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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.
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Old 05-16-2018, 05:42 AM
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Motul or Nissan fluid
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Old 05-16-2018, 06:02 AM
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Lego_Maniac
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I used Redline in the transmission, Motul in the differential.
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Old 05-16-2018, 09:06 AM
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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 I'm wondering if my use of Pa90 is out of date cause its been getting harder and harder to get locally and when i do find it its collecting dust on the shelf
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Old 05-16-2018, 05:17 PM
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Thanks for all the replies folks! I'll be buying some OEM tranny fluids and Motul differential oil!

Cheers,
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Old 05-17-2018, 06:09 AM
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Motul 75-90
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Old 05-17-2018, 12:12 PM
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slartibartfast
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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.
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Old 05-17-2018, 10:24 PM
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Agreed!

Is there a huge differenxe between the Motul 75W-90 Gear 300 vs Motul 75W-90 Gear 300LS?
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Old 05-18-2018, 08:33 AM
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Originally Posted by Meez403 View Post
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
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Old 05-18-2018, 08:56 AM
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FD? Front Differential? I drive a 13' Infiniti G37 Coupe RWD IPL haha so I'm guessing I'll need the LS Motul then?
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Old 05-18-2018, 09:13 AM
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Originally Posted by Meez403 View Post
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...
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Old 05-18-2018, 09:29 AM
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Thank you so much for all your replies!
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Old 05-18-2018, 10:27 AM
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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.
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Old 05-22-2018, 01:33 PM
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Never had bad experience with motul and this was on street and track cars. They also have great cs if you have issues
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