Review on Stop Transmission Slips & Leaks Instantly With Rislone High Mileage Stop Slip And Leak Repair - Pack Of 1,4502 by Brent Shaeffer

When I realized how thick this gear oil is I shouldn't have used it in my automatic trans. It actually changed the rpm range of the torque converter. It's probably great for standard transmissions (which it says it is for also). Also a call to their tech line told me that it will swell the rubber seals (which is good for an old trans) and they also said it will swell teflon seals, which I also needed. That part I don't believe. I happened to have some other used transmission parts out of a scrap tranny with a teflon seal. It's been soaking in this stuff for weeks and still hasn't made any difference, so I have major doubts about it swelling teflon seals.