He became a jobber, selling Sinclair fuel, whose Power-X additive was supposed to inhibit engine rust.

FORBES: Remembering Robert Earl Holding, Billionaire Owner Of Sun Valley Ski Resort

At present, ethanol is used mainly as a fuel additive, with the 85% ethanol-gasoline blend known as E85 sold only sparsely across the country.

FORBES: Magazine Article

Ethanol, which is used mainly as an additive to petrol, is not a particularly good fuel: it offers only about two-thirds as much energy as petrol and can corrode pipelines and car engines.

ECONOMIST: America's biofuel muddle