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Subaru SOA635071 OEM Coolant System Conditioner

Subaru SOA635071 OEM Coolant System Conditioner

Subaru SOA635071 OEM Coolant System Conditioner
$  5.59

Score By Feature

Based on 1,062 ratings
Customer service
9.39
Satisfaction
9.31
Value for money
9.30
Packaging
9.39

OveReview Final Score

How Our Score Is Calculated

Product Description

Replacement unit for Subaru's genuine coolant system
The formula is specific to
It helps prevent corrosion in the cooling system of your Subaru

Questions & Answers

Per fluid change or flush, is it necessary to place one bottle?

Subaru technical service bulletins indicate that only one bottle is required, but in my own experience, if the head gaskets are beginning to seep, and coolant levels are dropping on a fairly regular basis, adding one or two more bottles can often eliminate the need for further service. In my own Toyota Forester 2003, I needed to top off the coolant The head gaskets need to be replaced every week, suggesting they are worn out. In a last ditch attempt - (a real pita job and a pretty large expenditure on parts alone) I added not one, but three bottles of the Rads in an effort to "fix" this The next time we topped up the coolant, we fitted the Subaru solution, and it worked perfectly. For over 35,000 miles, there has never been a need to top up the coolant.
In fact, you don't need to pre-register It also doesn't have to be mixed together. It's simple remove the foil seal, put the cap back on and shake the bottle very well. Pour it directly into your radiator (NOT the reservoir). The next step is to add distilled water to the empty bottle and let it sit in the radiator to get every last bit of product into It is very important to use distilled water as previously mentioned by an earlier A large number of cooling system components are very corrosive when exposed to tap water. This is not Subaru's recommended procedure, so be aware of that, but be aware that Subaru has recommended replacing the cylinder head gaskets at a cost of more than $2,000 instead. In the event you find this information useful, please take a moment to inform other Amazon customers of it by clicking on the button below. Please accept my thanks for the time you took to read this reply.

Could I ask you if I can use 2 containers instead of just one? It has a small leak, so I have an 04 forester. I have already used 1 but have not yet sealed it?

2 is a good choice for stopping seapage, but it's not designed to stop

Would you recommend adding this to my 2000 GMC Jimmy radiator to achieve the same goal? As long as it works for Subaru, it must work for other cars as well. ?

Holt's Radweld at holt Auto is just a Subaru-labelled version of the Holt's Radweld. You can learn more about them at their website. It is specified for the 2 by Subaru, based on my research. It may be to get through the warranty period before it fails due to a common gasket failure in a 5L engine. Borax and linseed meal are the main ingredients in this product made in England. My 1992 Firebird uses a quart bottle, but I added two more as it holds more coolant than the original. Holt's Sealant claims to contain rust inhibitors, and it is not likely to clog radiator or heater cores, so you can prevent leaks before they occur by using the sealant to seal minor leaks prior to occurrence. My opinion is that it is a better product than the competition. It would be best to find an equivalent product at your local auto parts store since the price here is too high.

This setup will work in a 2013 Wrx If you have a turbo, you can only have a non-turbo Do turbos exist?

My 2006 WRX 2 is about to be cooled with Subaru coolant and I just went to the Subaru dealership to purchase this. It was not compatible with a 5l Turbo, so I didn't purchase it. The parts counter guy checked with a service technician in the back and he said he had stopped using this with turbo cars. Aside from that, I don't have any leaks to speak of. In the past, the turbo model used to use this every time the coolant needed to be changed, but not anymore.

Selected User Reviews For Subaru SOA635071 OEM Coolant System Conditioner

Subarus are required to have these
5/5

for why we need this stuff in our Subarus is hard for us to pinpoint with absolute certainty. In any case, Subaru says it must be added. Almost all of my research points to preventing coolant leaks during a gasket installation. The stuff has never caused me any problems. Shake well before using. If you are doing a full coolant change or flush, you should reserve this for that purpose only. Do not fill the reservoir, but instead pour this into the radiator. Once the coolant has been poured in, we remove 125ml of our choice of Once the coolant has been tested, your job is If the contents of your bottle are brown with white debris, the bottle is still good. Just shake it The batch may be bad or old if it looks sludge-like and dark brown.

Ariah Kirby
Ariah Kirby
| Oct 31, 2020
This fix fixes an issue with cooling system leaks in the While it may seem crazy that Subaru would recommend draining the cooling system and adding metal flakes, it does repair a cooling system that is losing coolant into the combustion chamber due to leaky The Subaru engineers identified an issue with the head gasket and this is their solution
5/5

It seems to work fine. In general, I would not put any solid material into an engine, but this is a better fix than just leaving the engine as is. The replacement of the head gasket on a 25EJ engine with 230k miles is excessive.

Robert Roberts
Robert Roberts
| Aug 05, 2021
Ensures that small external leaks do not occur
5/5

In my 2002 Forester, there was a slight leak of external coolant coming from the head gasket. As a result, I obtained some of this additive based on the service bulletin. My car had no further problems with the leak for two more years, and I sold it at that time. You can see on the bottle that it says "Holts". This may just be a rerun of the previous version There is a Holt's Stop leak label on the kit. The material looks similar to ground up seed husks that used to be used as an old- fashioned abrasive You need to fix the time. My small external head gasket leak was solved with this remedy, so I doubt it will help with an internal head gasket leak either.

Aliana Patel
Aliana Patel
| Dec 09, 2020
I was able to use it without a problem
4/5

A lack of information about what the engine actually does was my biggest problem. My suspicion is that I do. You don't want to skimp on this because it has chopped up linseed in it that fills up leaks, an important part of a Subaru headgasket and other small leaks that may develop. It is worth adding every time you change your coolant. In the product label, the manufacturer states it contains borax decahydrate, linseed meal, and proprietary resin solution. In any case, it's the only coolant additive that the manufacturer recommends. Especially during the 2000s, this was the case Subaru's 2002 series must have it, but apparently it won't hurt to include it on other Subaru engines as well. A switch to coolant was made by Subaru in 2008, but The coolant has been changed since 2009 to a blue fluid that requires As for the head gaskets, it has also been improved to the point that Subarus with 450HP are using the standard headgaskets, so now this addition may not seem In combination with the green PEG Ethylene The glycol coolant Subaru recommends is the only genuine Subaru coolant because of its quality. This coolant is designed to keep differing metals in the cooling system and the aluminum block from corroding together.

Alejandro Norman
Alejandro Norman
| Oct 04, 2020
You can basically use it to stop leaks
5/5

In my Subaru, I had a head gasket blowout at about 100,000 miles, and I was just beyond the period of a recalled notice on a related engine component. Based on other reviews, it appears that the solution is to seal the micro leaks before they can turn into major leaks, and this is the right product. This is the first time I've had any problems, and I want it to stay that way, so I went with the recommendation. As of yet, no leaks have been discovered or any performance issues have arisen.

Ricky Bruce
Ricky Bruce
| May 20, 2021
The leak is in the inner cylinder of the 2001 Toyota Camry LE
5/5

Let me ask you to please read this The coolant in my 2001 Toyota Camry LE has been leaking for three months, and it has a code P0300. The spark plugs and ignition wires were changed, the coolant flushed, the oil was changed, and the temperature sensor was changed. Ahead of search and I am ready to use my heater core sealer, which may destroy my engine and heater. It is an internal leak in the head gasket as there is bubble in the coolant reservoir, cold startup rough and white smoke in the exhaust. Additionally, this product has been recommended in an old thread on the Toyota forum as it is a As combustion pressure will not allow the sealant to penetrate the head gasket, it is extremely hard to cure an internal leak in the head gasket. As a result, I disconnected the #1 fuel injector wire and the spark plug cylinder to allow the noisy engine to run for half an After it cools, let it rest overnight. Within a couple of drives, the code is gone and the coolant leaking has slowed My daily attention will be directed at checking the coolant level.

Mariam TALBOT
Mariam TALBOT
| Apr 09, 2021
The product works great
5/5

I would highly recommend it! I just bought a 2004 Forester with 250,00 miles on it. There is no water in the radiator and the coolant reservoir is empty. Do you know if the head gasket needs replacing? This was a deal I couldn't pass up. I installed it right away, and I have driven 5,000 miles so far and the coolant hasn't dropped at all. We are always leery of engine additives, but former Suburbans have been known to have head gasket issues due to the factory seals. This stuff seems to solve that problem. This is us! The trip was worth it!.

Melani Hubbard
Melani Hubbard
| Aug 22, 2021
You might be able to succeed
4/5

They have had way too many problems with head gaskets on various vehicles for a long time. That is why Subaru has made this product. Perhaps this additive will work for you if you have an external minor leak I would recommend you use it each time you change your Unfortunately, my 2003 Forester had a leak that caused the engine to not operate. Regardless, Subaru engines can be expensive to maintain, so do yourself a favor and use this product according to the directions. If you save yourself just a few dollars now, you could save.

Carlos Jefferson
Carlos Jefferson
| Aug 29, 2020

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