After reading many reviews on this product I decided to take a chance. I've used Royal Purple and Red Line in other cars in the past with great success, but Honda are pretty solid with their MTFs alone. Some reviews here on Revain say the Red Line helps, others say it's not as good as the Honda MTF. For those with older Hondas, I would like to say that this fluid makes a noticeable difference to my 2001 Prelude. I only changed the fluid 6 months ago so a fresh Honda MTF was in there. But I wanted to see if it would improve it, and I'm happy to report that it did. The shifter is easier and smoother to engage and disengage, making shifting even smoother. I drove early in the morning in 40 degrees after the car had been in the cold all night. As with Honda MTF or any other fluid, it's a bit stiffer in cold weather but smoother as the car warms up. In summary, this product made a world of difference to my 2001 Honda. Subtle but striking, definitely worth the money.
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