How is this fluid in the cold ?

Not so good in my opinion (in the trans). I didn't notice any issues in the rear diff, but the 6 speed in my STI was extra notchy when I swapped with this at 30k. Nearly couldn't get into 1st even at a dead standstill. I quickly switched to Amsoil and it performs much better - I still have to double clutch into 1st if I'm rolling and it's really cold, but that goes away after the car warms up a bit, and I can get into 1st just fine if I'm stopped or moving very slowly.

Is this a synthetic based oil?

dont know but this is the only oil i have used that kept 3rd gear on my 2009 wrx from grinding. i actually thought my transmission was dead. i tried eneos/royal purple and ams oil each one for about 10k miles and 3rd gear would grind if i shifted at anything over 3k rpms.

Is this actually extra s? soa427v1700 refers to "high performance gear oil" you should probably change the title...

It came in semi-clear unmarked bottles. It did not perform well for me. Once hot, shifts were very notchy. I changed to Severe Gear and all was well.

Is this the factory fluid for a 2015 wrx? Manual transmission?

It is the official Subaru manual transmission and differential fluid. I believe it is the factory fluid.

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Subaru75W-90 High Performance Gear and Transmission Fluid 1 Quart - SOA427V1700 - Genuine OEM

Subaru75W-90 High Performance Gear and Transmission Fluid 1 Quart - SOA427V1700 - Genuine OEM

4.7/5

Product ID: 5118695

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Details

Material
Synthetic
Brand
Subaru
Package Information
Bottle
Liquid Volume
1 Quarts
Item Weight
1.5 Pounds

🔧Reduces 3-4 shift grind

🚗OEM Subaru STI approved

⚙️75W-90 synthetic viscosity

Description

⚙️ Shift smoother, drive smarter — the Subaru secret weapon!

OEM SUBARU CERTIFIED - Genuine Subaru fluid trusted by STI models for unmatched reliability.
COMPACT READY TO USE - 1 quart bottle designed for easy handling and precise application.
SMOOTH SHIFTING EXPERIENCE - Significantly reduces the notorious 3-4 shift grind in high-mileage WRX transmissions.
PRECISION SYNTHETIC FORMULA - Engineered 75W-90 viscosity for optimal gear protection and performance.
UNIVERSAL SUBARU COMPATIBILITY - Perfect fit for any Subaru requiring 75W-90 fluid in transmissions and differentials.

Subaru 75W-90 High Performance Gear and Transmission Fluid is a synthetic, OEM-approved lubricant designed to reduce shift grind and enhance smoothness in Subaru transmissions and differentials. Ideal for high-mileage WRX and STI models, this 1-quart bottle delivers precision-engineered protection and performance exactly as Subaru recommends.

Specifications

Material	Synthetic
Brand	Subaru
Package Information	Bottle
Liquid Volume	1 Quarts
Item Weight	1.5 Pounds
Recommended Uses For Product	Lubricant
Viscosity	75w90
Item Form	Oil
Manufacturer	Subaru
Unit Count	32.0 Fluid Ounces
Number of Items	1
Model	Gear Oil
Item Weight	1.5 pounds
Package Dimensions	8.98 x 4.17 x 2.72 inches
Item model number	SOA427V1700
Is Discontinued By Manufacturer	No
Exterior	Machined
Manufacturer Part Number	SOA427V1700
OEM Part Number	K0322AA093

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

View all Trustpilot reviews

Subaru75W-90 High Performance Gear and Transmission Fluid 1 Quart - SOA427V1700 - Genuine OEM

Details

Description

Specifications

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