BlueDevil Transmission Stop Leak... I should have known better!

[jakeru]

Hmmm.... I'm just trying to figure out what's in this stuff.

[from https://www.gobdp.com/wp-content/uploads/2014/08/BlueDevil-Transmission-Sealer-SDS3.pdf]

" > 90% Proprietary Ingredient"
"SARA Section 313 - Emission reporting: Glycol Ethers Category".

..and also from https://gobdp.com/wp-content/uploads/2014/01/00236_TSL_MSDS.pdf

"CAS # EINECS No Name % Concentration Warning, Risk phrases
111-90-0 203-919-7 Diethylene glycol 20%-95% R36
+ monoethyl ether
NA NA Proprietary Mixture 5%- 30% R2-/21/22
Trade Secret"

Not your usual "water glass" type stop leak product. Maybe the solvent properties are intended to clean dissolvable build-up, (assuming some sort of dissolvable build-up was preventing sealing and causing leakage)?

[bwdz]

I never gave it much thought about what is in those things but I would guess something ethanol based. They all claim cleaning properties and probably swell up seals which is what alcohol does. If you ever put a rubber o-ring in a container and spray some carb cleaner or the like on it, you can watch it swell up. It must be something similar that still has lubricating properties in it. Actually if you put rubber seals in diesel they get softer and swell a bit as well. Just to be clear, I am just speculating as I don't actually know.

[JFP in PA]

Originally Posted by jakeru

Hmmm.... I'm just trying to figure out what's in this stuff.

[from https://www.gobdp.com/wp-content/uploads/2014/08/BlueDevil-Transmission-Sealer-SDS3.pdf]

" > 90% Proprietary Ingredient"
"SARA Section 313 - Emission reporting: Glycol Ethers Category".

..and also from https://gobdp.com/wp-content/uploads/2014/01/00236_TSL_MSDS.pdf

"CAS # EINECS No Name % Concentration Warning, Risk phrases
111-90-0 203-919-7 Diethylene glycol 20%-95% R36
+ monoethyl ether
NA NA Proprietary Mixture 5%- 30% R2-/21/22
Trade Secret"

Not your usual "water glass" type stop leak product. Maybe the solvent properties are intended to clean dissolvable build-up, (assuming some sort of dissolvable build-up was preventing sealing and causing leakage)?

Those are seal softening compounds designed to soften up seals that have hardened over time.

[aneal000]

Everything I read was that it would cause the gaskets to swell. I'm guessing it works as it apparently popped the transmission input shaft seal out.