75W90 suggestions?

[demarpaint]

I use Mobil 1.

 

[ka9mnx]

Just changed all my vehicles from Mobil1 75w-90 to SuperTech Syn 75w-140. Very happy with the results.

 

[krismoriah72]

Supertech in mine. $5.86/qt API GL-5 MT-1 and SAE J2360 cant get any better specs than that.

 

[ARCOgraphite]

No magic in rear diff juice. Anything made right for the lowest buck.

WPp 75W90 Supertech in the Subaru. Works fine so far.

No seal leaks noticed on the brakes because -

half shafts

If I was at a real AP store for a HP/SHD application, I'd get an RDS product

 

[Rand]

IIRC from the old amsoil chartered 3rd party test of gear oils Lucas and RP were the 2 that performed worst.

Amsoil, redline performed the best and motul wasnt tested. (out of about 15 gear oils)

 

[Red91]

We use Mobil 1 or Valvoline synpower at the shop.

 

[y_p_w]

Some suggest Red Line 75W90NS (normally for gearboxes) plus their limited-slip diff friction modifier additive in order to control the amount of slip allowed.

https://www.redlineoil.com/limited-slip-friction-modifier

 

[ABursell]

Originally Posted by y_p_w
Some suggest Red Line 75W90NS (normally for gearboxes) plus their limited-slip diff friction modifier additive in order to control the amount of slip allowed.


Doesn't a friction modifier make it slip more vs. controlling the amount of slip? Or, am I misunderstanding?

I like Amsoil and Redline and Mobil-1, and didn't think any synthetic was supposed to need additive- I've never used it with a synthetic.

 

[Skispcs]

I used Mobil 1 when I changed my gear oil. 30K miles later I lost my pinion bearing.
Not 100% causal but my faith in M1 has been damaged.

 

[jrvn]

Walmart SUPER TECH

 

[tblt44]

I use mobil 1 or valvoline

 

[dubber09]

Used Shaeffers 75w-90 on first change and will be going to Supertech full synth on next.