What stop leak is best for a head gasket leak ?

20

Asked by Nov 02, 2012 at 11:13 AM about the 2002 Subaru Outback Base Wagon

Question type: Maintenance & Repair

I have a small water leak internal on the engine which I can smell after exiting the car.
There's a few products that claim permanent repairs. Are they any good. Some are $40 and guarantee results. What say you, schould I give them a try ?

8 Answers

I personally do not like anything that is "fix it in a can"...maybe it will work but I would never put the crap in an engine of mine. Opinion only here of course.

9 of 9 people found this helpful.
112,075

I agree with DavidH25. I have used them tho. That was a big mistake. Stopped up heater core, thermostat and small throttle body heater hoses. Took forever to get it all cleaned out. I do not recommend using any of these products.

3 of 3 people found this helpful.

dandyoun: Exactly why I said that and even if you end up putting a head gasket or whatever will fix that internal leak, everything else gets gummed up

3 of 3 people found this helpful.
8,865

most mechanics half ass it, to sell the car, GM had the HUGE problem with the North star to where they made GM head gasket specific "Blue Devil" (theirs being aluminum heads aluminum block bolts not long enough), Subaru doesn't have such a thing, universal is universal, you say a small water leak....was this diagnosed? if so intake or exhaust side, as most sealers will work for one not the other....

9 of 9 people found this helpful.
112,075

Ended up tearing mine completely down to get all the gum out. But even with all that time and work there is almost no way to be sure it is all gone. I learned a hard lesson with using these products. But some good did come out of it. Since I was pulling the heads went with all new valves, lifters, valve guide seals and all new gaskets. Now sons car should last awhile longer. Flushed radiator and heater core out but I am sure that there is still some in them. Will replace them when issues arise. Again I agree with DavidH25.

4 of 4 people found this helpful.
225

Don't do it! Fix it the right way

5 of 5 people found this helpful.
70

When an engine has 200,000 plus and it is not worth a complete rebuild or even the time and expense of a head gasket, Bars leak or the aluminum powder type is worth a try. In my experience a clogged heater is usually the result of using to much stop leak. I know of several examples of glogging after the second treatment. If the vehicle is worthy to be kept for a while then fix what is broken. If one treatment fails to work it means the pressure is to much to fix the leak . Like trying to plug a truck tire. 110 lbs. or more will blow the plug right out of the hole. (however truckers, a big enough knot in the plug may hold)

6 of 6 people found this helpful.
80

elliott.s gasket fix is the one to go with as i have tried them all and i have never had a problem with the elliotts gasket fix. the others do work but elliott's is the front runner for me.

8 of 8 people found this helpful.

Your Answer

Add photo

Related Questions

  • What stop leak is best for a head gasket leak ? 8 answers

    I have a small water leak internal on the engine which I can smell after exiting the car. There's a few products that claim permanent repairs. Are they any good. Some are $40 and guarantee results. Wh...

    2002 Subaru Outback Base Wagon

    -

    Maintenance & Repair

  • Is a weeping head gasket a sign of imminent head gasket failure? 6 answers

    I recently bought a 2005 Subaru Outback 2.5I with a MA reconstructed title. It has power steering leak a little over 79000 miles and weeping head gasket. I got it for $4450 with 2 warranties dealer...

    2005 Subaru Outback 2.5 i Wagon

    -

    Maintenance & Repair

  • Small Leak in Engine 2 answers

    We own a 2001 Subaru Outback wagon. We bought is from a used car dealershp. Of course, the leak started 3 wks after purchasing it. There is a small leak in the engine. We have added Bar's Leaks St...

    2001 Subaru Outback L.L. Bean Edition Wagon

    -

    Maintenance & Repair

  • 2002 Subaru has a head gasket leak. What's a good stop leak product / 4 answers

    I have a small leak of coolant on the outside of the cylinder head, not into the engine. I'm looking at the products offered, some you can add to the coolant ,others require draining the system and r...

    Subaru Loyale

    -

    Maintenance & Repair

  • What year model is best Subaru outback 8 answers

    What year do you think has the least mechanical problems on the Subaru outback? I'm looking for a used one

    Subaru Outback

    -

    Maintenance & Repair

Outback

Looking for a Used Outback in your area?

CarGurus has 40,752 nationwide Outback listings starting at $1,395.

ZIP:

Search Subaru Outback Questions

Subaru Outback Experts

#1 Markw1952
Markw1952
Reputation 7,370
#2 TheSubaruGuruBoston
TheSubaruGuruBoston
Reputation 2,300
#3 F_O_R
F_O_R
Reputation 2,020
View All

Related Models For Sale

Used Subaru Forester
413 Great Deals out of 32,510 listings starting at $995
Used Subaru Legacy
244 Great Deals out of 12,619 listings starting at $1,399
Used Subaru Impreza
215 Great Deals out of 19,037 listings starting at $1,100
Used Honda CR-V
982 Great Deals out of 57,314 listings starting at $1,000
Used Toyota RAV4
900 Great Deals out of 64,318 listings starting at $1,990
Used Toyota 4Runner
227 Great Deals out of 19,106 listings starting at $1,500
Used Toyota Highlander
377 Great Deals out of 26,278 listings starting at $2,500
Used Toyota Tacoma
516 Great Deals out of 43,167 listings starting at $1,995
Used Honda Pilot
395 Great Deals out of 23,467 listings starting at $995
Used Jeep Grand Cherokee
1,069 Great Deals out of 73,682 listings starting at $1,200
Used Honda Accord
1,050 Great Deals out of 68,868 listings starting at $1,000
Used Subaru Impreza WRX
66 Great Deals out of 1,367 listings starting at $3,500
Used Ford Escape
1,363 Great Deals out of 84,720 listings starting at $995

Used Cars For Sale

2017 Subaru Outback For Sale
42 Great Deals out of 30,024 listings starting at $20,965
2016 Subaru Outback For Sale
59 Great Deals out of 1,139 listings starting at $17,991
2015 Subaru Outback For Sale
76 Great Deals out of 1,678 listings starting at $10,499
2014 Subaru Outback For Sale
47 Great Deals out of 1,569 listings starting at $8,988
2013 Subaru Outback For Sale
36 Great Deals out of 971 listings starting at $7,988

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.