Can I Use E30 Ethanol or E15 In My Car?

1996 Olds 98 runs rough and engine dies. 1997 Chevy Monte Carlo has a broken shift cable you can't get. 2016 Ford Explorer ecoboost Can I Use E30 in it? 2014 Chrysler Town and Country what do you do when the transmission fails? 2003 Chevy Malibu won't stop cranking. 2009 Jeep Grand Cherokee rear end locks up. 1976 Jeep CJ-5 304 V8 Fuel Vapor Lock. Chevy Colorado has a bad smell.