by Emergency Roadside Truck and Trailer Repair
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6 December 2024
A semi truck dripping oil is more than just an annoyance—it’s often a sign of a deeper issue that could lead to costly repairs if ignored. Addressing the cause early can save you money and prevent downtime. Below, we discuss common reasons why your semi truck might be leaking oil. When your truck needs oil leak repair in Phoenix, contact Emergency Roadside Truck and Trailer Repair. Worn or Damaged Gaskets Gaskets create seals between engine components, but over time, they can deteriorate due to age, heat, or pressure. When a gasket becomes cracked or worn, it allows oil to seep out, leading to visible drips under your truck. Common culprits include valve cover gaskets and oil pan gaskets. Loose or Faulty Drain Plug After an oil change, the drain plug may not have been tightened correctly, or the threads may be damaged. This often leads to small but persistent leaks. Inspecting and securing the drain plug—or replacing it if necessary can usually fix the problem. Failing Oil Seals Oil seals, like those around the crankshaft or camshaft, prevent oil from escaping the engine’s moving parts. Over time, these seals can crack or wear out, causing leaks. High-mileage trucks are especially prone to this issue, as seals naturally degrade with use. Oil Filter Issues If your oil filter is improperly installed, damaged, or clogged, oil can escape. Regularly replacing the oil filter during oil changes help prevent leaks and ensure the system is functioning properly. Excessive Oil Pressure Too much oil pressure, often caused by a clogged PCV (Positive Crankcase Ventilation) valve, can force oil out through seals and gaskets. Cleaning or replacing the PCV valve helps regulate pressure and stop leaks. Cracked Engine Components In rare cases, cracks in the engine block, oil pan, or other components can lead to oil dripping. This is often caused by extreme wear, impact, or overheating and requires immediate attention to prevent further damage. Full-Service Big Rig Repair in Phoenix At Emergency Roadside Truck and Trailer Repair, we understand that time is money, especially when it comes to keeping your tractor-trailer on the road. That's why our full-service semi truck repair shop in Phoenix is equipped to handle all your big rig repair needs, from routine maintenance to major overhauls. This includes oil leak repair, diesel engine repair, exhaust repair, brake repair, transmission repair, suspension repair, truck AC repair, trailer repair, hydraulic repair and so much more. With a focus on quality craftsmanship and timely service, you can trust our team to get your trucks back in action quickly and efficiently, minimizing disruptions to your operations. Call us at 602-830-2602 to schedule an appointment.