PLEASE, CONFIRM IF THIS PRODUCT IS: 75W90 NS GL-5, NOT 75W90 GL-5

I bought 8 bottles for my 355F1 and I can confirm, it is NS.

I have a non limited slip differential. Is it better to use non limited slip oil or limited slip oil?

This answer assumes the differential calls for a 75w90 GL-5 gear oil. 75w90NS should only be used in non limited slip differentials. 75w90 may be used in any differential. Generally, just buy the 75w90 with the limited slip modifiers. The most typical reason for buying the 75w90NS is for racers that want to do a custom mix and add the friction modifiers separately.

Does this gear oil have a built-in friction additive?

The title does suggest it does.

Is this a good product for subarus given the nature of the trans and front diff sharing the same fluid?

its used in o3 Subaru outback in front and rear diff for 30k miles. No problems at all

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Red Line 58304 75W90 Non-Limited Slip Synthetic Gear Oil - 1 Quart

Product ID: 256334809

Details

Brand
Red Line
Item weight
1.7 Pounds
Liquid volume
32 Fluid
Material
Synthetic
Package information
Bottle

🔥Up to 350°F thermal stability

⚙️75W90 synthetic viscosity

🛡️Polyol ester base for extreme protection

149.80 DT

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Description

⚙️ Drive smarter, not harder — gear oil that keeps you ahead of the pack!

THERMAL RESILIENCE - Maintains stable viscosity and performance up to 350°F, ensuring drivetrain efficiency in extreme conditions.
EXTENDED DURABILITY - Natural multigrade properties reduce thickener breakdown, delivering long-lasting gear protection.
TRUSTED PERFORMANCE - Highly rated by professionals and enthusiasts alike, ranked top 100 in automotive oils with 4.8 stars.
VERSATILE APPLICATION - Optimized for transmissions, transaxles, and limited-slip differentials without extra friction modifiers.
PRECISION SYNTHETIC FORMULA - Engineered with polyol ester basestocks for unmatched lubrication under high load and temperature.

Red Line 58304 75W90 Non-Limited Slip Synthetic Gear Oil is a premium drivetrain lubricant designed for superior protection and efficiency. Utilizing advanced polyol ester synthetic basestocks, it delivers exceptional lubrication and thermal stability up to 350°F. Ideal for transmissions, transaxles, and limited-slip differentials, this oil maintains stable viscosity over extended use without additional friction modifiers. Trusted by professionals and ranked among the top automotive oils, it ensures your vehicle’s drivetrain performs at its peak under all conditions.

Specifications

ASIN	B000CPI5Y6
Best Sellers Rank	#8,333 in Automotive ( See Top 100 in Automotive ) #149 in Automotive Oils
Brand Name	Red Line
Container Type	Bottle
Customer Reviews	4.8 4.8 out of 5 stars (324)
Global Trade Identification Number	00083522583046
Included Components	75W90 NS GEAR 1QT
Item Form	Oil
Item Type Name	75W90 NS GEAR 1QT
Item Weight	1.7 Pounds
Liquid Volume	32 Fluid Ounces
Manufacturer	Red Line
Material	Synthetic
Model Number	58304
Number of Items	1
Number of Packs	1
Part Interchange Info	58304
Part Number	58304
Recommended Uses For Product	Vehicle,Commercial
SAE J300 Viscosity Grade	75W-90
Specific Uses For Product	Transmissions, Transaxles, Racing limited-slip differentials
UPC	083522583046
Unit Count	32 Milliliters
Upper Temperature Rating	350 Degrees Fahrenheit
Viscosity	75W90
Warranty Description	LIMITED WARRANTY

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149.80 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

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