Pacific States Petroleum - California's On-Site Fueling Leader, California’s on-site fueling Leader Welcome to Pacific States Petroleum Inc., California’s largest on-site fueling company, where the safe and efficient delivery of diesel, renewable diesel, unleaded gasoline, propane, and lubricants is our number-one priority. We are a “can do” company that works 24/7 to provide safe, reliable, and cost-effective solutions for all your petroleum needs. … Home Read More ».