Omnitek Engineering Receives Contract to Develop Euro 6 Heavy-Duty 12-Liter Propane (LPG) Autogas Engine GlobeNewswire (press release) VISTA, Calif., Dec. 06, 2017 (GLOBE NEWSWIRE) -- Omnitek Engineering Corp. (OTCQB:OMTK) today announced it has received a contract to develop a heavy-duty 12-liter propane engine for Class 8 trucks and certify the engine to EURO 6 emissions standards ... |