On Friday, April 5, 2013 9:17:42 AM UTC-5, Colin Roney wrote:
Automatic or Manual. Which is the best?

If you have an automatic, good to have a tachometer so you can see what is going on. If the torque converter won't stay locked up, your transmission will not last long. You can see this if you have a tach. And an extra transmission cooler probably can't keep up with that much added heat generation.