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.
(edit)
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
(edit)
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
