Hi.
You won't get as much punch from your engine with 16 % nitro as you get with 25 %,but on the other hand,16% is not so hard on your engine,so it's
possible that it runs a few gallons longer before it's worn out.
20% is the way to go. Anything more will shorten the life of the engine, and less wont give ya as much "punch". I run 20% Trinity Monster horsepower in mine, and it really likes it. Thats what I would recomend.
Blue thunder ran good for me too. A little warmer than Trinity's but its some good poop too. Suprisingly Top fuel ran good too. (But ya might look like a dork putting traxxas fuel into a Savage..lol.. Kinda like a Bowtie sticker on a ford..lol)