i thought the higher the grade the better, if you can afford it then why not right?...........reason why i've been putting 93 on my tc since i got it b/c on my previous car a vw, that's all i put, but then again it was turboed so.......

 

I can afford to fill up with 107 on a weekly basis. Does that mean I should run 107 from now on?

Fail. You're wasting your money.

 

lol.
try running C16.

VP C16 - 30 Gallon Drum $331.00

VP C16 - 5 Gallon Pail $63.00

ouch.
and if you need to run that, i gaurentee your setup is not made for fuel economy which means...even bigger ouch. haha