Dragsters are mostly 2 wd. So pan car based stuff. But 4wd will be easier on a dirty and/or uneven track. Shaft or belt doesn't make a difference. What I use to do was sweep and blow of the track of debris. Then sprayed it down with 3 light coats of grape soda. Why grape soda? Because it smells good and usually has the most sugar content. 6 liters is enough for 132ft and cost 2 bucks from the dollar store. Spray again when the track gets slippery over time.
6 KiloWatt Racer
GTP-1515 2700kv+RX8. GTP-C50-6L Hacker+RX8. CRT.5-C50-Maxx+modded RSpro.
RCM CRT.5 Neu 1506 6800kv+MMM.