This is topic Is "Stop Leak" stuff good? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 50cal (Member # 1724) on :
 
Anybody here ever used a "StopLeak" or "Rear Sealer" product in a bottle? It's supposed to stop moderate leaking of oil from the rear/front seals of the crank shaft. I could've bought it and tried it. But, I want testimonials from anyone here that used it before. Thanks.
 
Posted by 302 DROP (Member # 1323) on :
 
never used it 4 engine oil leak's, but i did use the ATF stopleak for my p/s pump and it did work, for a few weeks,
 
Posted by hidnn.o.s. (Member # 1219) on :
 
it's NOT good for your engine, you don't want that stuff running through your engine!!
 
Posted by 925GT50 (Member # 2683) on :
 
x2 I never run any of that stuff unless its for a bucket/scraper vehicle. No lie I used tranny stop leak and it held up to when i traded my car lol
 
Posted by 89foxstang (Member # 5908) on :
 
+1 i wouldnt use it on any vehicle i cared about.
 
Posted by mikeceli (Member # 8389) on :
 
Many years ago, when I ran an auto repair shop, in N. Cali., the "Bars Leak " rep wanderdd in, asking for 5 minutes of my time.

He requested an empty coolant gallon and I privided one. He filled it with water and added a little of the DRY type(pellet) Bars Leak. He then proceded to punch holes in the jug. The mixture flowed out for monents and sealed itself up.

The Rep then produced a "sieve" (FINE screen strainer) and poured the Bars Leak/H2O mixture through it. (demonstrating how it did not plug the fine screen).

I have used Bars Leak ever since with positive results. Though it can fix leaks, often, for a long time, it is NOT a mechanical repair.

Most OE vehicle manufacturers have added Bars Leak to all new cars, for decades. Used correctly. it is good insurance against small leaks.

Bars Leak also make a more AGRESSIVE coolant sealer. It is the one that comes in a bottle. Looks like rabit poop, in molases. In the 1970's, I had a 65 289 V8 Mustang, tha suddenly began blowing coolant, into the crankcase, out the vent, ONTO THE WINSHIELD! It emptied the system, in about 30 miles. I used the licquid Bars Leak(hoping to get a few days out of it). The system held, for YEARS.

Again, leak sealers don't always work and good mechanical sense, will tell WHEN to use them.
 
Posted by BCINGUU (Member # 2397) on :
 
A lot of those oil leak stop products are just lubricants for the rubber seals. They won't help if your leak is mechanical (e.g. a loose bolt or warped mating surface).
 




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