Laconia Service Stations Gasoline and Oil 535 Union Ave Irving Oil is an energy processing, transporting, and marketing company headquartered in Saint John, NB with US marketing operations in Portsmouth, NH. Laconia NH Service Stations Gasoline and Oil Irving Mainway www.irvingoil.com oil company refinery energy company oil and gas products lubricants gasoline LNG LPG natural gas petrochemical petrol petroleum bio-fuels energy needs irving credit card convenience retail heating equipment heating oil propane cle oil company refinery energy company oil and gas products lubricants gasoline LNG LPG natural gas petrochemical petrol petroleum bio-fuels energy needs irving credit card convenience retail heating equipment heating oil propane cle Business Reviews Irving Mainway Testimonials