How can i be sure this is the authentic idemitsu brand and not fake, and, this meets the specs for a 2011 subaru outback 3.6r?

(I'm thinking the 3.6R got the old school 5EAT and not the newer CVT.) The shipment I received appeared to be genuine, equivalent to Subaru ATF-HP. If it was counterfeit, they did an extremely good job copying the bottle and the label; and what would they have put in the bottle that would have been significantly cheaper than ATF-HP but not as good? Bottom line, I don't know how you would tell if the product you received was counterfeit.

What color is good on the stick after 150,000?

New, out of the bottle fluid is red. If you haven't changed it in 150,000 miles I would bet it is dark brown and more viscous. Red is best. For a quick solution, with the motor off you can siphon most of the fluid out of the holding tank and replace it with this fluid. After a week you can do it again and you should be good.

Is this good for 2008 Subaru Outback automatic transaxle (2.5i 4-cylinder engine)?

This is the fluid that Subaru specifies. See page 11-24 of your owners manual for more information on recommended fluids and capacity for your automatic transmission. I use this ATF in my 2008 Subaru Outback 2.5i.

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Idemitsu ATF Type HP Transmission Fluid for Subaru – 5 Quart

Idemitsu ATF Type HP Transmission Fluid for Subaru – 5 Quart

Product ID: 223889882

Details

Brand
Idemitsu
Flash Point
174 °C
Liquid Volume
5 quarts
Package Information
Bottle
Recommended Uses For Product
Transmission

🔥High oxidation resistance

⚙️Precision friction control

🛡️Advanced anti-wear protection

£94.83

Duties & taxes included

In stock

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Description

⚙️ Shift Smooth, Drive Confident: The Subaru Transmission Fluid Upgrade You Can't Miss!

LONG LASTING FLUID LIFE - Exceptional resistance to oxidation and thermal breakdown means your transmission fluid stays effective mile after mile.
SPOTLESS TRANSMISSION HEALTH - Keeps your transmission impeccably clean by preventing sludge and varnish buildup for peak performance.
SEAMLESS SHIFTS ZERO SHUDDER - Engineered frictional properties ensure buttery smooth gear changes and eliminate annoying transmission shudder.
MAXIMUM GEAR BEARING PROTECTION - Advanced anti-wear technology guards critical components, extending transmission lifespan and reliability.
SUBARU SPECIFIC HP SPEC CERTIFIED - Precisely formulated to meet Subaru’s high-performance transmission standards—because your ride deserves the best.

Idemitsu ATF Type HP Transmission Fluid is a premium 5-quart solution engineered specifically for Subaru HP spec non-CVT automatic transmissions. It delivers superior anti-shudder performance, advanced anti-wear protection, and excellent resistance to oxidation, ensuring long fluid life and a clean, efficient transmission. ISO and IATF certified, this fluid guarantees smooth shifting and extended transmission durability, making it the trusted choice for Subaru owners who demand reliability and peak performance.

Specifications

ASIN	B08CS1P8NJ
Best Sellers Rank	#20,913 in Automotive ( See Top 100 in Automotive ) #68 in Transmission Fluids
Brand Name	Idemitsu
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (447)
Flash Point	174 °C
Included Components	5 Quart Bottle of Idemitsu Type HP ATF
Item Form	Liquid
Item Highlight	For Subaru HP Spec Non-CVT Transmissions \| Anti-Wear & Anti-Shudder \| ISO & IATF Certified
Item Type Name	Idemitsu ATF Type HP Automatic Transmission Fluid - 5 Quart
Liquid Volume	5 quarts
Manufacturer	Idemitsu
Model Number	30040099-95300C020
Number of Items	1
Part Number	30040099-95300C020
Recommended Uses For Product	Transmission Fluid
UPC	810041470027
Unit Count	160 Fluid Ounces

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