The addative you put in is pure snake oil and has - at best - just degraded your ATF to replacement status - LEXUS, FORD, GM, TOYOTA and just about all major manufactures specifically recommend against adding anything to your engine oil, ATF, PSF. Sorry to hear that you were taken in by this - regretably you need to drop the oil pan on your transmission and replace the fluid in the transmission and troque converter with a reputable product : Use a major brand name product that specifically meets the ATF spec listed in your owners manual - Chevron, Texaco, Exxon, Mobil all make excellent ATF products.