Haven't decided on diesel or gas yet. As for a TT.. not sure about that either. So the short answer is...it depends.
Cost is a factor, diesels cost more. I've driven diesel cars and trucks both. Didn't like the smell or the noise, and since the truck will also be pretty close to a daily driver... I'm leaning toward gas.
I understand that diesels are probably better for towing in the mountains. But...the last diesel I drove had to stay running in the winter or it would "gel up" and that was down right annoying. It was a 1984 Mercedes 300DT. Great car for down south.
So, obviously I don't know a lot about diesels. I'm just info gathering right now.
So how does a high or low gear ratio affect tow ability?
cts