lucas stop leak

12vcummins59 · Dec 22, 2016

Anybody used the Lucas engine oil stop leak? If so what kind of results? I've heard the most engine oil additives are bad but I've seen a lot of good reviews on the Lucas stop leak. Thanks.

dapepper9 · Dec 22, 2016

Well...i read the thread title and already had a bad feeling....soooo....lol. No stop leak is ever good. They may fix am issue temporarily but end up doing much much more damage

dudeman2009 · Dec 22, 2016

Anyone who gives a good review of stop leak either doesn't know very much, or wants to believe that nothing bad happened because they don't want to admit they got duped.

Stop leak will stop small leaks, and clog small passages and particulates will become embedded in the bearing material on your rods, crank, and cam.

In short, stop leak is like cutting off blood flow to your whole arm because you cut your finger. It will stop the bleeding, but cause plenty of other problems, possibly permanent.

12vcummins59 · Dec 22, 2016

Thanks for the input, any tricks for finding oil leaks?

dudeman2009 · Dec 23, 2016

12vcummins59 said:
Thanks for the input, any tricks for finding oil leaks?

They sell fluorescent dye that you can put in your oil that lights up real bright under blacklight. It helps a ton. Otherwise, clean everything up real good and go for a 10 mile drive and look again.

SilverStreak88 · Dec 24, 2016

Don't use it! I speak from experience, it cost me a radiator, heater core and water pump.

Max78 · Dec 24, 2016

Stop leak is a horrible thing, it provides a very temporary solution which ends up causing more problems in the long run.

I would recommend a good high mileage oil as they generally have a safe amount of conditioner for seals, but if they toast there is no mechanic in a can.

To find the leaks, head to the local coin wash with some cans of gunk original engine degreaser.

Then verify the seals at the upper part of the engine first as they can leak down the engine and look like a rear main or oil pan seal.

Good luck

07MegaCabRam · Dec 24, 2016

I mechanic told me, not a tech, you put oil in the engine and you put gas in the tank. NOTHING ELSE.

12vcummins59 · Dec 24, 2016

Thanks for all the warnings, definitely won't be buying any

lucas stop leak

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