Subaru Coolant System Conditioner 2 Pack - SOA635071 - Genuine OEM

Q: should i use this in my 2011 forester that has no leaks at 160000 miles just for insurance?

I used it in my 2011 Forester per user manual around 130k with the coolant drain and change (did not flush or change thermostat). Now at 155k I havent had any problems (or headgasket leaks as the dealer informed me). The Radiator is old and cracking now so I would replace that all together this time along with water pump.

Q: Do I use both bottles or just 1

Some Subaru models are notorious for head gasket issues. Subaru developed this additive with Holts to prevent problems from faulty head gaskets. Use one of these every time you do you your 30,000 miles coolant flush. If adding it before your next flush, just remove 4oz from your radiator (when cool). It is a brown goupy solution with chunks, you must shake VERY well before pouring. Some owners swear by this stuff, some are mad they have to use it in the first place, and some put it in and forget it. Recently has seen widespread use in non-Subaru makes because of it's excellent performance compared to other Stop Leak products. If your car is showing signs of head gasket issues, it is advised to try this out, and then use it with every coolant flush. Other head gasket failure preventions: - Make sure your battery terminals are corrosion free

Q: Can I use this in turbocharged engine?

Most places online say it wasn't meant for turbo models. That doesn't necessarily mean it won't work if you have a coolant leak. It's a rebranded product made a British Company called Holts. The Holts product name is Radweld. Subaru rebranded it for use in a recall of 99-2002 ej25 models with weak head gasket material. Those are not turbo model engines, but the turbo models weren't recalled for it, if that helps. If you have a coolant leak, it's worth a try. It's cheaper than replacing a head gasket.

4.6/5

Product ID: 16110185

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✅Genuine OEM Subaru quality

♻️Optimized for green coolant

🛡️Extends head gasket life

Frequently Bought Together

Subaru OEM Coolant System Conditioner - SOA635071-2 Pack

Subaru Genuine Super Coolant Blue Prediluted SOA868V9272 1 Gallon Pre Mixed 50/50 2009 and Newer Ascent BRZ Crosstrek Forester Impreza Legacy Outback WRX

Description

🛠️ Keep your Subaru cool, clean, and unstoppable!

GENUINE OEM ASSURANCE - Trust Subaru's original SOA635071 conditioner for unmatched reliability and quality—never compromise with aftermarket substitutes.
CONVENIENT 2 PACK VALUE - Double up with two conditioners in one package, ideal for routine maintenance and peace of mind on every coolant flush.
PROTECT YOUR ENGINES HEART - Specifically formulated to extend the lifespan of your Subaru's head gaskets, preventing costly repairs.
PERFECT FIT FOR ICONIC MODELS - Compatible with 1993-2008 Impreza WRX STI, 1998-2008 Forester, and 1990-2008 Legacy and Outback—keep your ride running like new.
TAILORED FOR GREEN COOLANT SYSTEMS - Designed exclusively for Subaru models using green coolant, ensuring perfect chemical compatibility and peak performance.

The Subaru Coolant System Conditioner 2 Pack (SOA635071) is a genuine OEM additive designed exclusively for Subaru vehicles using green coolant. It extends head gasket life and ensures optimal engine cooling performance. Compatible with key Subaru models from 1990 to 2008, this conditioner is essential for maintaining engine health during coolant flushes, providing reliable, manufacturer-backed protection.

Specifications

Manufacturer	Subaru
Brand	Subaru
Item Weight	9.9 ounces
Package Dimensions	4.76 x 2.48 x 2.44 inches
Item model number	SOA635071
Is Discontinued By Manufacturer	No
Manufacturer Part Number	SOA635071

Have a Question? See What Others Asked

should i use this in my 2011 forester that has no leaks at 160000 miles just for insurance?

Do I use both bottles or just 1

Can I use this in turbocharged engine?

Can this cooling system conditioner be used in vehicles other than subarus? or is it designed to be used only in subaru vehicles?

Common Questions

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