The key to tire saucing is consistency, while noting your results. I like to keep mine on the tires for 10 - 15 minutes (maybe a little longer for the first run of the day). I also like to get the tires good and dry prior to putting the car on the track. Really rub it in with a clean towel! Then do a little burnout while holding the car (some tracks have a special piece of carpet to do that on so you don't leave burnout marks everywhere). For bigger races where battery life may be an issue, skip the burnout and wipe a second time well with the towel. If you do this, you should have good and consistent traction from the sound of the horn! Follow the exact routine for every run but note that at some tracks, as traction comes up throughout the day, you can probably get away with less sauce or less soaking time.
*I start out doing the full rear and 1/4 to 1/2 of the fronts (on the INSIDE edge) depending on track conditions.
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