With all the convenience of a mobile app, access your Proulx Oil & Propane account from the comfort of your mobile device! It's never been easier to: Make Payments Order Fuel View your Account And much More! Proulx Oil & Propane is a full-service company offering propane fuel and heating oil, tank installation, and equipment service & repair since 1944. Providing quality service in New Hampshire, Maine and Massachusetts areas. We are committed to growing our business through our base of satisfied customers.