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Opel omega engines valve celebrates four years carscoops Might this new-concept rotary range extender fly? Opel celebrates 100 years of four-valve engines [gallery]
Might This New-Concept Rotary Range Extender Fly?
Might This New-Concept Rotary Range Extender Fly?
![Opel Celebrates 100 Years of Four-Valve Engines [Gallery] | Carscoops](https://i2.wp.com/www.carscoops.com/wp-content/uploads/2013/12/d17c75d2-28-opel-omega-3456525255b725255d.jpg)
Opel Celebrates 100 Years of Four-Valve Engines [Gallery] | Carscoops