Oil service typically refers to the maintenance procedures performed on a vehicle's engine oil system. Here's a detailed description of what an oil service typically includes:

1. Oil Change: The primary task is to drain the old engine oil from the vehicle and replace it with fresh, clean oil that meets the manufacturer's specifications. This involves:

   • Draining the old oil from the engine sump.
   • Removing and replacing the oil filter, which traps contaminants and debris from the oil.
   • Installing a new oil filter to ensure efficient filtration and oil flow.

2. Inspection: During the oil service, mechanics often perform a visual inspection of various components to ensure they are functioning properly and are in good condition. This can include checking:

   • The oil drain plug for proper sealing.
   • The condition of seals and gaskets related to the oil system.
   • Any signs of leaks or seepage around the oil pan or filter.

3. Fluid Top-up: Besides changing the engine oil, the service may include checking and topping up other essential fluids like:

   • Coolant
   • Brake fluid
   • Power steering fluid
   • Transmission fluid (if applicable)

4. Filter Replacement: Apart from the oil filter, other filters in the vehicle may also be checked and replaced if necessary:

   • Air filter: Ensures clean air intake into the engine.
   • Cabin air filter: Filters the air entering the passenger compartment.

5. Resetting Service Indicator: Many modern vehicles have a service reminder or indicator light that needs to be reset after an oil change to ensure accurate maintenance records and reminders.

6. Additional Checks: Depending on the service package or the mechanic’s assessment, other checks may be performed:

   • Tire pressure and tread wear inspection.
   • Brake inspection.
   • Suspension and steering components.

7. Advisory: Mechanics may also provide recommendations based on their inspection and the vehicle's maintenance schedule for future services or repairs that may be needed.

Regular oil services are crucial for maintaining the performance, reliability, and longevity of a vehicle's engine. They help prevent premature wear and potential damage by ensuring that the engine is properly lubricated and protected against contaminants. Service intervals vary by vehicle and driving conditions, so it's essential to follow the manufacturer's recommendations or consult with a qualified mechanic.