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I think I read somewhere that they had two I-4 engines for 2012..one that IS e85/flex fuel ..The Yellow cap is for engines that take e85. so I would assume, with the black cap...you dont have the flex fuel engine.

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I Found this, digging around. regarding the new I-4 engine for 2012

NEW! Engine, 2.4L DOHC 4-cylinder SIDI (Spark Ignition Direct Injection) with VVT (Variable Valve Timing) E85 capable when ordered with (FE9) Federal emissions (182 hp [135.7 kW] @ 6700 rpm, 172 lb-ft [232.2 N-m] @ 4900 rpm)
1 - Requires (FE9) Federal emissions on TLM26 AWD models. S S S S1
Exhaust, single
 
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