Whoa! Careful you don't slip - and DEFINITELY don't light a match around this!
Oil Slick price in Growtopia: sells for about 30/WL (median of 23 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: KLIAI, ZCLDL, YENOK, WDUYU, NEE4