Found a miracle cure for dying rotaries...
 

The car is a 90 gxl with the original 208,000 mile engine. It runs great but had an increasingly worsening oil control ring leak. I was gettin bad blowby smoke on cold starts or starting the car after sitting for more than 15 minutes. It would always leave a mt st Helens cloud for about 100 ft.

I've tried other products like Lucas oil stabilizer, barr stop leak etc with no positive results.

Anyway... The product is White Shephard oil stop leak. I just added a bottle straight I to my oil about 2 weeks ago and it hasn't smoked a single puff since. Costs about $18 and I purchased it at advance auto parts.

Just thought I'd share with everyone.

Bah! tearing out an engine isn't that hard.

Good to know, just rebuilt mine so hopefully this won't be useful anytime soon, but good info nonetheless.

We'll just call it a miracle patch and leave it at that. There is no such thing as mechanic in a can, and no amount of science can ever produce it. All "stop leak" products are is essentially either a seal-sweller or an oil-thickener. Ever seen this product called "motor honey"? Holy crap, I challenge everyone to go find a bottle of it on the shelf at parts stores and then turn the bottle upside down. The little bubble space at the top takes about 2 minutes to float upwards. Seal-swellers just make the seals swell up a little bit and seal better for a very limited amount of time. The seals get really soft and wear faster, and then you'll be faced with a catastrophic failure that can't be controlled with any amount of "stop leak" products.

So just keep in mind people, this is not a fix you want to rely on very long. Hey, I'm glad it's keeping the smoke in for now, but start saving your pennies for a rebuild because you'll be doing one very very soon.

+1 ^

^ +2 on saving for rebuild.

It's the same technology that is used in the high mileage oil products. I think it is probably harmless and maybe slightly useful. It ain't a fix it's a help.

It's not permanent, but it will hold things together for at least another year if not longer. I'm down to one car right now so I can't afford to have the car under the knife for long until I get a second car again. This is a miracle cure for someone like me right now... Not a rebuild in a bottle. The formulation is actually similar to brake fluid chemically. I plan to change the oil next week as it's at the 3000 mile mark so it won't have the stop leak in it all the time so the seals won't over soften.

8Well we can hope it will last that long, who can tell? Just pussy foot around like you had an egg on the loud pedal.
Instuctor at Advanced Motorist Exam so told me, England. seventies, I needed an Advanced Motorist Certificate to reduce the insurance premiums for my 1298 cc Mini Cooper S.
The course was invaluable for safe driving and eco0nomy. So if you drive like you have an egg on the accellerator might work to keep the car rolling until rebuild time

mbonner >> I wouldn't do that.. Then you'll have a ton of carbon build up.

Unless the water seals are going, drive the car like it's meant to be driven. :)

+1 for saving for a rebuild.. But know you will have some time when the oil seals start to go, my friend 1MZFE drove his engine until about 260K original with terrible, terrible oil seals. [Even I didn't like to be behind his car when he was driving.. ick]

Derekcat, I was referring to the poster's car who is trying to nurse it along for a year
My 88 vert is booted up to redline now and again to get the carbon out. An rx7 owner tells me he adds ATF to his engine oil to cut the carbon. Does this make sense anymore than adding 2 stroke oil to the gas when the OMP is working fine?

Steaming the internals by sucking in water or seafoam through a vacuum nipple works better than anything. ATF has been a touchy subject with rotaries for years for its detrimental effects on oil seals. I would reason to believe that putting ATF in the intake would carbon/gum it up even more.

If it swells up the oil control seals enough to stop blow by just what is it doing to the running oil cooler lines?

Now if only they sold "compression in a can", I wouldnt need to turbo swap as soon.

mbonner >> Or AGreen's suggestion.

Though I'd think it best to water clean it and try to keep the carbon levels lower anyway..

Just because the oil seals are going bad doesn't mean the rest of the engine is. I just wanted something to reduce or stop embarassing smoking for a few months until I got money put back for a second car. Then the engine will get pulled and rebuilt. Hopefully by late fall. Plus I can take another week of vacation from work in the fall.