Which is best for my truck - Redline gear oil vs Royal Purple gear oil in Toyota sequioa 2008?

I have a Toyota Sequoia 2008 4WD Iam buying your oil 75W85 for differentials (front & rear). Will also buy 75W90 for transfer case.
Do I have to also order and use Red Line Friction Modifier & Break-In Additive 4 oz 80301? Want to do the changing myself but not sure if my truck needs the modifier.

I thought of buying Royal purple 75W-90 for both differential and transfer but they dont have 75w-85 for differentials and rather recommend 75W-90.

I live in an area that temperatures are 35-40 degrees celcius. Will be doing mostly highway and a bit of stop and go traffic driving. Any advise and suggestion on other gear oils?

Regards

Anonymous2017-04-15T21:52:17Z

As long as the gear oil you are buying meets manufacturer requirements, it doesn't matter. I usually go with the cheapest option that meets manufacturer specs.

JJ2017-04-15T18:01:21Z

IF you have limited slip differentials you need the additives for them. Otherwise the difference is so slight as the same as splitting hairs and is meaningless.

salad torture2017-04-15T17:54:22Z

use redline oil

Ron2017-04-15T16:19:29Z

https://www.amazon.com/Mobil-104361-75W-90-Synthetic-Gear/dp/B000ONZXPK

Pilsner Man2017-04-15T15:39:36Z

Walmart carries synthetic oil in their brand, and it is just as good as these others. I just bought some for $6. Of course, if you want to pi$$ your money away...