I have actually tried to put Toluene in my old car GTI
my car made a lot of HP for the little 2.0T engine
and I must say you can feel a difference.
I added about 10% but our fuel is 98Ron from the pump.
I always had a question on is this safe? or am I adding too little?
Past: Gintani stage3 M3
present: Porsche 993RWB, 964RS America,996 cupcar, 964 turbo 3.6, 991C4S,997GT2, Cayman GTs,i3