has anyoneever tried any of those motor liquids ? the octane boost, the oil cleaner thingy i think ? the engine cleaner thing ? whatever else you guys can think of that you put into motors that asures you better performance and whatever else. have you ever felt the differnce? if so what arethe best kinds ? and how often should they be put into the motor ?

 

chevron techron every 10k miles

 

in my friends turbo bettle, he put that race formula NOS octane booster in and it took .2 secs on his 1/4 mile time, or maybe he was just driving better.