Review on 🚘 Mobil 1 Synthetic Automatic Transmission Fluid - 1 Quart (Pack of 6): High Performance Gear Oil for Optimal Transmission Efficiency by Mike Kies

I bought this Mobil 1 ATF for my Miata and it worked very well. Miata shifts like new. I later replaced all 12 liters of this oil in my GMC Sierra. Shifts were always smooth, but I felt like I noticed even smoother shifts with this Mobil 1, but there was a jittery sensation I'd never felt in the 4L60e before. I drove the GM for about 100 miles and the tremors persisted, then I switched the Mobil 1 to GM Dexron Fully Synthetic Transmission Fluid and the tremors quickly went away. If you have a GM, in my experience a 4L60e transmission wants a real Dexron, I should have played it safe and went with the AC Delco Dexron first. This says it works for GM Dexron but not in my GMC Sierra. Still an excellent oil. Genetically modified oil. https://www.amazon.com/dp/B01EGOR5JO/ref=cm_sw_r_cp_apa_i_4cZcFbXXWZ1ME