I read from somewhere that with lower nitro content, means the caster oil content is higher which helps in the cooling of the engine. No doubt a higher nitro percentage gives you power and speed, but it shortens your engine life as well... I've seen guys running their car on 25% and leaning it so much that within a week, it's blown the engine. All in all, it's how you want your truck to perform that counts. Have fun!!
