Afraid not , Toulene is difficult to get here and Toluene is very cancer causing (Carcinogen) and can make you go blind. Quantities required per tank means you need a few litres always at your disposal , not something I would like to have in an apartment
I did a lot of research on the octane boosters as its a market place full of snake oil, there are however a few true octane boosters out there, the key to finding a booster that will work is ensuring it contains a high percentage of MMT (Methylcyclopentadienyl manganese tricarbonyl). You'll often hear the old nugget that such small volumes of an additive couldn't possibly have any real impact, however this is untrue, outside of chemists people really don't appreciate the impact that small ppm (parts per million) of a active ingredient can have. The catch with MMT as with most chemicals is that its nasty, and really the ability to purchase it in Octane boosters appears to be somewhat of a loop hole in my opinion.
There are a number of MMT rich octane boosters our there, the two that I've used and are most readily available are NF Race Octane Booster and Bardhal BSF Race Octane Booster. The NF Race OB showed extremely good results in my friends GTR in terms of low knock numbers, however the place I was buying from discontinued it a while ago so I switched to the Bardhal BSF, I believe the BSF has the highest MMT content of any booster available,The advantage of Bardhal is that it is extremely concentrated, so easy to keep in the boot (comes in a 1Ltr Tin) but also quiet expensive (€120), you will get excellent results with 2ml / Ltr, and I believe even as low as 1ml/ltr can be sufficient for road use, so your €120 could potentially treat 500 to 1,000Ltrs.
Never seen any knock logs with the BSF
She probably had a little bit of BSF still in her when on the Dyno