Does Stop oil leak additive actually work?

I have a minor oil leak like a few drips every couple of hours and I can't figure out where it is coming from I am tired of adding oil every month. Does that stop oil leak additive stuff actually work for a minor leak like mine? Does it hurt the engine itself? How do you use the stuff? In case you are curious the leak is coming from somewhere on the bottom half of the engine in the rear looks like rear main seal but I know it isn't because I had it replaced 2 weeks ago. I can't tell exactly where the leak originates from because its hitting the flywheel and its slinging it everywhere under the truck.Does Stop oil leak additive actually work?
Your motor oil is suppose to get into every little cracks and channels to liubricate moving parts (like small space between the piston and wall, rods and crankshafts, etc.)





The STOP leaks are design to STOP the oil from getting into small cracks (assuming that is where the leak is). The problem is that it blocks oil circulations indiscriminately.





I would NOT use it. I rather live with the leak.








Good Luck...Does Stop oil leak additive actually work?
With the advances the chemical industries have made some things will work. I have two circumstances where it did, a jeep aw4 trans front seal and dodge 5.2L rear main and no harmful side afects. If its oil put it in the oil if its trans fluid put it in there many times the stuff only works when it sees air or temp change ie a leak. go ahead it can't hurt or the company would be bankrupt and drowning in lawsuits. Buyer beware some is snake oil.
my oldsmobile leaks a little bit too but i,am not putting that junk in my engine. if the rear main is leaking then you can put anything you want in it and it won,t stop it because there is a lot of pressure there.
It all depends on the size and location of the leak if its a small leak let's say the corner of a valve cover or the timing cover it can work for a period of time. It thickens the oil.
I myself don't like stuff like that they seal things that should not be sealed.


The sealer goes hard and can damage other parts.


Just because you have done the rear main does'nt mean it is still not leaking.
If its a chevy small block, check the distributor seal ontop of the engine. It leaks and runs down and looks like a main seal leak.
Yes, -- but it depends on how big the leak is! Sounds like it will probbly work in this instance, -- unless you have a cut or cracked seal where parts are moving (like crank or camshaft seals)-- No it is not magic! The chemical reaction causes a little stuff to clot up, just like a puncture wound in your skin,-- and as you know ther are places where too much flexing of skin occours to allow scab to remain on wound!





Product called ';no leak'; which is widely distributed (I buy at WalMart),-- has done really good results for me for a while now, -- though there are a lot of others that do good too! I just use this because of availability, and price, - costs less than $7 a bottle (I think). Have sealed up leaks in last 5 Chev and Ford products quite well and in my Chev truck has lasted for almost 60K now!





';Repair in a bottle'; is a whole lot cheaper and faster than taking engine apart and changing seals and gaskets till you find probelm!





Another place you might look is at oil pressuree sending unit, -- they quite often get leaks out the top of the unit where wire plugs on, -- if it is one up on top,- and rear of engine it is very hard to see, -- possibly might need flashlight,- and look at night to concentrate light where you need it!
Step one was it leaking before you put in the rear main? if yes then take it back they may have messed up and will fix it for free. the old seal will actually wear down the block over time so if they put it in the same place it WILL leak. you could also have them do a ';clean and die'; basically they clean the engine and put in a neon die that shows up with black light and find exactly where the leak is.





if it was not them that did it you could always run a thicker oil. i wouldn't recommend it but i have see it done and it works but you could have the same effect as using the stop leak and oil starve the engine.