Castrol Transmax DEX/MERC Automatic Transmission Fluid, 1 Gallon

so far this is the best mercon fluid ive found, its given me the lowest trans temps of any fluid ive used in my 7.3 dually no matter what im towing

Honestly can any of us really review this product? Without doing an oil analysis after thousands of miles I can’t tell you if it’s good or not. What I do trust is the brand, I know the fluid is the right spec and I liked the price. That’s what I bought it. I’m using it for DOT III power steering fluid if that matters.

Very reasonable priced Thank you

I am retired from the countries largest delivery services. I had to provide my own personal vehicle and daily my vehicle would stop and start well over 800 times. Under this punishing year round service, my transmission lasted for 13 years in one vehicle. With maintenance (change your fluids) I am convinced, from personal experienced this is the best DEX/MERC ATF fluid on the market.

I used this for the transmission fluid flush on my 2005 Honda Odyssey Touring with 221k miles. Unknown when last transmission fluid change was, but it's part of Honda's maintenance schedule - so ~30-60k miles. I ran this fluid for a few weeks (~500 miles) before flushing it out and putting in the Honda OEM ATF. In the Odyssey, you cannot drain all of the fluid out the first drain (some left in cooler, lines, solenoids). The recommended total "flush" is to fill/drain 3x times (I only did 2x). On the 2x fill I used the Honda OEM ATF, since the cost is reasonable for my budget. I cannot tell a difference in shifting/drive-quality between Honda OEM ATF and this.

Why did you pick this product vs others?: Works great

Good oil

Gm pickup, 99-06, trucks runs and shifts perfect. 245,000 miles. Did a pan drop on transmission. ACDELCO- filter change Castrol Transmax-2 gal. Dex/ Merc 1 gal. Transmax Dextron 6 Mixed together.