The best replacement for petroleum is oil.

The best alternatives to petroleum are rated as following:
★★★★★  oil
★★★★  crude oil
★★★★  natural gas
★★★  petrolatum
★★★  gasoline
★★  coal
★★  mineral oil
★  ethanol
★  synthetic
★  synthetic oil
★  mining engineering
★  biofuel
★  solar energy
★  biodiesel
  water based flux
  coal tar
  hydrogen
  water based pomade
  british petroleum
  petroleum jelly
  petrol
  kenny lloyd
  biofuels
  renewable energy
  hydrocarbon
  nuclear energy
  synthetic motor oil

Your alternative for petroleum is not listed? Suggest!
Speaking about petroleum, one probably shouldn't forget about plastic.

Other search terms related to petroleum and their ratings are:
★★★★★ plastic
You have in mind a companion for petroleum and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of petroleum in all years. Click on graph for more.
petroleum
oil
crude oil