--- product_id: 16110185 title: "Subaru Coolant System Conditioner 2 Pack - SOA635071 - Genuine OEM" brand: "subaru" price: "105 zΕ‚" currency: PLN in_stock: true reviews_count: 9 category: "Subaru" url: https://www.desertcart.pl/products/16110185-subaru-coolant-system-conditioner-2-pack-soa635071-genuine-oem store_origin: PL region: Poland --- # Fits 1990-2008 Subaru models 2-pack genuine formula Prevents small head gasket leaks Subaru Coolant System Conditioner 2 Pack - SOA635071 - Genuine OEM **Brand:** subaru **Price:** 105 zΕ‚ **Availability:** βœ… In Stock ## Summary > πŸ› οΈ Keep your Subaru running smooth β€” because your ride deserves genuine care! ## Quick Answers - **What is this?** Subaru Coolant System Conditioner 2 Pack - SOA635071 - Genuine OEM by subaru - **How much does it cost?** 105 zΕ‚ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/16110185-subaru-coolant-system-conditioner-2-pack-soa635071-genuine-oem) ## Best For - subaru enthusiasts ## Why This Product - Trusted subaru brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Extended Engine Life:** Helps protect and extend the lifespan of your head gaskets during coolant flushes. - β€’ **Genuine Subaru Quality:** Trust OEM precision engineered for your Subaru’s green coolant system. - β€’ **Easy Maintenance Upgrade:** Add during coolant changes to maintain optimal engine health and avoid downtime. - β€’ **Wide Model Compatibility:** Perfectly fits 1993-2008 Impreza WRX STI, 1998-2008 Forester, and 1990-2008 Legacy & Outback. - β€’ **Cost-Effective Leak Prevention:** A smart, temporary fix that can save you hundreds on costly repairs. ## Overview Subaru Coolant System Conditioner SOA635071 is a genuine OEM 2-pack additive designed exclusively for Subaru vehicles using green coolant. Compatible with key models from 1990 to 2008, it helps prevent and temporarily fix small head gasket leaks, extending engine life and saving costly repairs. Trusted by mechanics and Subaru enthusiasts alike, it’s the essential maintenance upgrade for proactive drivers. ## Description Genuine Subaru Coolant Conditioner. Good idea to use on your Subaru when you do a coolant flush. This will help the extend the head gaskets. Used only with cars with green coolant. Your package will include the following items: Subaru Genuine Coolant Cond. SOA635071 x2. Don't settle for aftermarket components of questionable quality and always insist on Genuine Subaru replacements. Fits: 1993-2008 Impreza Wrx STI 1998-2008 Forester 1990-2008 Legacy and Outback Review: safe, effective, temporary fix for small leaks/prevention - I am very skeptical about miracle in a bottle like "liquid engine rebuilder" but this is a product designed and recommended by subaru for subaru's, specifically for preventing and treating small head gasket leaks. That said, I do have a small/moderate external head gasket leak of about 100cc per 1000 miles. I can't pull the engine and replace the head gaskets right now and 2 bottles of this have dramatically reduced the leakage, much to my surprise. This is not a permanent fix but I would highly recommend it to be added when changing your coolant or if you ever notice a significant drop in coolant in one of these subaru boxer motors. If you have a known coolant leak you are on borrowed time even with this product and more significantly you are in danger of serious engine problems if not addressed. You need to monitor your engine oil regularly (daily/weekly) and if it looks milky or in any way just not normal you need to get those heads done immediately. Also, you need to watch your engine temp like a hawk and if it never goes above half way, such as mine, and then one day it is 3/4 to the top, not in the red mind you, but just a significant deviation from normal, you need stop get those heads addressed immediately. Head gaskets leaks can be tricky and if it is only an external leak (big if) you aren't in real danger of damaging your engine, but coolant to oil, or combustion to coolant leaks are emergent situations in my book. That said, I'll use this again as it did work for me, again, as a temporary fix till I get the head gaskets done. Review: WOW! - I purchased this coolant conditioner suggested by a local mechanic for a heater core leak in my 2001 Jeep Grand Cherokee 4.0. I was having to fill my reservoir tank 2 to 3 times a week. I had a permanent wet spot in my driveway. Went to this reputable local mechanic and as he charged strictly by the book hours to replace my heater core, cost to repair was going to be $450. After turning down his estimate and deciding to live with the problem, he offered information about this coolant conditioner that he used in a dragster he owned and raced. I purchased the two bottles and installed it as per YouTube videos and within 2 days my leak was stopped and has not returned for a year now (knock on wood). I only used one bottle for my fix so I gave the other bottle to a friend that had a leaky system on a farm tractor and bam it fixed that also. GREAT STUFF! saved me $442 in repairs. Highly recommended! ## Features - Used only with cars with green coolant - Subaru Genuine Coolant Conditioner SOA635071 x2 - 1993-2008 Impreza WRX STi - 1998-2008 Forester - 1990-2008 Legacy and Outback ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00WFI0W2Q | | Best Sellers Rank | #41,565 in Automotive ( See Top 100 in Automotive ) #25 in Automotive Replacement Engine Coolant Recovery Kits | | Brand | Subaru | | Customer Reviews | 4.6 4.6 out of 5 stars (686) | | Date First Available | April 20, 2015 | | Is Discontinued By Manufacturer | No | | Item Weight | 9.9 ounces | | Item model number | SOA635071 | | Manufacturer | Subaru | | Manufacturer Part Number | SOA635071 | | Package Dimensions | 4.76 x 2.48 x 2.44 inches | ## Images ![Subaru Coolant System Conditioner 2 Pack - SOA635071 - Genuine OEM - Image 1](https://m.media-amazon.com/images/I/51hkBseQe3L.jpg) ## Questions & Answers **Q: should i use this in my 2011 forester that has no leaks at 160000 miles just for insurance?** A: 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** A: 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?** A: 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. **Q: Can this cooling system conditioner be used in vehicles other than subarus? or is it designed to be used only in subaru vehicles?** A: any vehicle ## Customer Reviews ### ⭐⭐⭐⭐⭐ safe, effective, temporary fix for small leaks/prevention *by W***R on November 19, 2018* I am very skeptical about miracle in a bottle like "liquid engine rebuilder" but this is a product designed and recommended by subaru for subaru's, specifically for preventing and treating small head gasket leaks. That said, I do have a small/moderate external head gasket leak of about 100cc per 1000 miles. I can't pull the engine and replace the head gaskets right now and 2 bottles of this have dramatically reduced the leakage, much to my surprise. This is not a permanent fix but I would highly recommend it to be added when changing your coolant or if you ever notice a significant drop in coolant in one of these subaru boxer motors. If you have a known coolant leak you are on borrowed time even with this product and more significantly you are in danger of serious engine problems if not addressed. You need to monitor your engine oil regularly (daily/weekly) and if it looks milky or in any way just not normal you need to get those heads done immediately. Also, you need to watch your engine temp like a hawk and if it never goes above half way, such as mine, and then one day it is 3/4 to the top, not in the red mind you, but just a significant deviation from normal, you need stop get those heads addressed immediately. Head gaskets leaks can be tricky and if it is only an external leak (big if) you aren't in real danger of damaging your engine, but coolant to oil, or combustion to coolant leaks are emergent situations in my book. That said, I'll use this again as it did work for me, again, as a temporary fix till I get the head gaskets done. ### ⭐⭐⭐⭐⭐ WOW! *by W***N on December 25, 2024* I purchased this coolant conditioner suggested by a local mechanic for a heater core leak in my 2001 Jeep Grand Cherokee 4.0. I was having to fill my reservoir tank 2 to 3 times a week. I had a permanent wet spot in my driveway. Went to this reputable local mechanic and as he charged strictly by the book hours to replace my heater core, cost to repair was going to be $450. After turning down his estimate and deciding to live with the problem, he offered information about this coolant conditioner that he used in a dragster he owned and raced. I purchased the two bottles and installed it as per YouTube videos and within 2 days my leak was stopped and has not returned for a year now (knock on wood). I only used one bottle for my fix so I gave the other bottle to a friend that had a leaky system on a farm tractor and bam it fixed that also. GREAT STUFF! saved me $442 in repairs. Highly recommended! ### ⭐⭐⭐⭐⭐ I suspect it's a sealant *by D***N on March 28, 2019* I read that that Subaru, required this in the cooling systems, of their older Subys. We just had new head gaskets installed on our 07 Outback. I had previously replace the timing belt kit, and water pump. After we got the car back for the head gaskets job, I noticed that the engine would draw back more antifreeze, after cooling down, than it pushed into the expansion tank, when at operating temperature. I kept track of this, for a couple of weeks. I had to top off the expansion tank, to keep the engine and radiator full. I decided to purchase a couple of bottles of "Subaru cooling system conditioner". It said on the bottle, "shake before using". That was my clue that Subaru had issues, with cooling systems, and this was a sealer. After shaking, I drew out enough, from the radiator, then added 1 bottle. I gave it a couple of days to get through the system. Well, it's been at least 5 days, and the expansion tank level, is still in the exact same spot, each morning, just below full! This stuff really works! I could not see any visible leaks, before I used this product. It's much like engine oil in subarus. Subarus chew oil, but you never see where it goes, (out the exhaust!) (subarus are junk!) My Saab 9-3 oil, never budges! It's too bad Saab went bankrupt! At any rate, try this cooling system conditioner, it really works! ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/16110185-subaru-coolant-system-conditioner-2-pack-soa635071-genuine-oem](https://www.desertcart.pl/products/16110185-subaru-coolant-system-conditioner-2-pack-soa635071-genuine-oem) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-28*