O'Reilly Auto Parts Store #5509 in St. Helens, Oregon, is known for its friendly and helpful staff, providing excellent customer service. Customers appreciate the store's knowledgeable team, especially staff members like Matt and Richard, who go above and beyond to assist with finding parts, checking fit, and even helping distract children during visits. The store offers a wide range of parts, tools, and accessories, along with useful store services such as free battery testing, wiper blade and bulb installation, and check engine light testing. It also resurface brake rotors and drums, making repairs easier for customers. The store features a free Loaner Tool program, allowing customers to borrow tools with a refundable deposit, which is highly valued. Customers consistently praise the staff for their kindness, patience, and willingness to help, even in challenging situations like rainy days. Overall, the store is regarded as a top choice for auto parts and service, thanks to its excellent customer experience and commitment to helping customers get their jobs done right.