Servicing your car at home is one of the most practical ways to save money on vehicle ownership while also understanding exactly what condition your car is in. A standard logbook service at a workshop can cost $200 to $500 AUD depending on the vehicle, but many of the tasks involved are straightforward enough for a home mechanic with basic tools and a workshop manual.
This guide walks through the complete DIY service checklist, covering every item a professional mechanic would inspect or replace during a standard service. Use it alongside your vehicle’s workshop manual, which provides the exact specifications, fluid capacities, and torque values for your make and model.
Before You Start: What You Need
To perform a basic service at home, you will need a socket and spanner set (metric for most vehicles), a jack and jack stands, an oil drain pan, a torque wrench, a funnel, and basic consumables like rags, brake cleaner spray, and disposable gloves. You will also need the correct oil, oil filter, air filter, and any other filters due for replacement.
Most importantly, you need your vehicle’s workshop manual. It specifies the correct oil grade and capacity, filter part numbers, torque values for the drain plug and filter housing, and the service intervals for every component. Using the wrong oil specification or over-torquing a drain plug can cause real damage.
Engine Oil and Oil Filter Change
The oil and filter change is the foundation of every service. Engine oil lubricates, cools, and cleans internal engine components. Over time, it breaks down and accumulates contaminants, which is why regular replacement is essential.
The process involves warming the engine to operating temperature (warm oil drains more completely), raising the vehicle on jack stands, removing the drain plug from the sump, draining the old oil into a catch pan, replacing the drain plug washer and torquing it to specification, replacing the oil filter, and then filling the engine with the correct grade and quantity of fresh oil.
Critical details from your workshop manual include the oil specification (e.g., 5W-30 API SN, or 0W-20 ILSAC GF-6), the total oil capacity with filter change, and the drain plug torque value (typically 30 to 45 Nm, but this varies significantly between vehicles). Over-torquing the drain plug is a common mistake that can strip the sump thread, leading to an expensive repair.
Air Filter Replacement
The engine air filter prevents dust, dirt, and debris from entering the engine’s intake. A clogged air filter restricts airflow, which reduces engine efficiency and can increase fuel consumption. Replacement is usually the simplest job in any service – most air filter housings are held closed by clips or a few screws, and the filter simply lifts out.
While you have the air filter housing open, inspect the intake duct between the filter and the throttle body for cracks or loose connections. Any air entering after the filter bypasses the filtration entirely and can damage the mass airflow sensor or introduce contaminants into the engine.
Cabin (Pollen) Filter Replacement
The cabin filter cleans the air entering the passenger compartment through the climate control system. A dirty cabin filter reduces airflow from the vents and can cause musty smells. Most cabin filters are located behind the glove box or under the windscreen cowl. Your workshop manual will show the exact location and removal procedure for your vehicle, as some require removing trim panels or disconnecting wiring to access.
Spark Plug Inspection and Replacement
Spark plugs ignite the air-fuel mixture in petrol engines. They wear over time and eventually misfire, causing rough idle, poor fuel economy, and reduced power. Standard copper spark plugs typically last 30,000 to 60,000 km, while iridium or platinum plugs can last 100,000 to 160,000 km.
Your workshop manual will specify the correct plug type and part number, the electrode gap (measured with a feeler gauge), and the torque specification for installation. Spark plug torque is critical: too loose and the plug can blow out under compression, too tight and you risk cracking the cylinder head’s aluminium threads. Most modern engines with aluminium heads require 15 to 25 Nm for the spark plugs, but always check the manual.
Coolant Level and Condition Check
Check the coolant level in the overflow/expansion tank with the engine cold. The level should be between the minimum and maximum marks. If it is low, top it up with the correct coolant type specified in your manual. Mixing different coolant types (for example, green ethylene glycol with pink/red long-life coolant) can cause chemical reactions that reduce the coolant’s protective properties and block passages.
Inspect the coolant colour and clarity. It should be the colour of the coolant type (green, pink, red, or blue depending on the brand) and should be clear, not cloudy or rusty. Brown or oily coolant can indicate a head gasket issue and warrants further investigation.
Most manufacturers recommend a full coolant flush and replacement every 2 to 5 years depending on the coolant type. Your workshop manual includes the drain and refill procedure, including the total system capacity and any bleed points that need to be opened to purge air pockets.
Brake Fluid Check
Brake fluid is hygroscopic, meaning it absorbs moisture from the atmosphere over time. As the moisture content increases, the fluid’s boiling point drops, which can lead to brake fade under heavy braking. Check the level in the brake fluid reservoir (it should be between MIN and MAX) and note the colour. Fresh brake fluid is clear to light amber. Dark brown or black fluid is overdue for replacement.
Most manufacturers recommend replacing brake fluid every 2 to 3 years regardless of mileage. The replacement procedure involves bleeding each brake caliper in a specific sequence (usually starting from the wheel furthest from the master cylinder) until clean fluid flows through. Your workshop manual provides the bleed sequence and the fluid specification (typically DOT 3 or DOT 4).
Transmission and Differential Fluid
Manual gearbox oil and differential oil degrade over time and should be checked and replaced according to the manufacturer’s schedule. Automatic transmission fluid (ATF) is also a service item on most vehicles, though some manufacturers claim it is a “lifetime fill” – many mechanics disagree and recommend replacement every 60,000 to 100,000 km.
The correct fluid specification is absolutely critical for transmission longevity. Using the wrong ATF type can cause harsh shifting, slipping, or premature wear. Your workshop manual lists the exact fluid specification and capacity for each component.
Brake Pad and Rotor Inspection
While the vehicle is raised for the oil change, inspect the brake pads through the wheel spokes or remove the wheels for a closer look. Measure the pad thickness and compare it to the minimum specification in your workshop manual (typically 1.0 to 2.0 mm). Also check the rotor surface for grooves, scoring, or a pronounced lip at the outer edge, which indicates wear. If you are unsure about brake pad replacement, our complete brake pad guide covers the full procedure.
Tyre Inspection and Rotation
Check all four tyres for tread depth (the legal minimum in Australia is 1.5 mm, though most mechanics recommend replacing at 3 mm), uneven wear patterns, and any cuts, bulges, or cracking in the sidewalls. Uneven wear across the tread surface can indicate incorrect tyre pressure, worn suspension components, or misalignment.
Tyre rotation (swapping front and rear tyres) helps even out wear, since front tyres typically wear faster due to steering and braking loads. Your workshop manual or tyre manufacturer will specify the rotation pattern and recommended interval (usually every 10,000 to 15,000 km).
Belt Inspection
The serpentine belt (also called the drive belt or accessory belt) drives the alternator, power steering pump, air conditioning compressor, and sometimes the water pump. Inspect the belt for cracking, fraying, glazing, or chunks missing from the ribbed surface. Most serpentine belts last 60,000 to 100,000 km, but should be replaced immediately if any damage is visible.
If your engine uses a timing belt (rather than a timing chain), check whether it is due for replacement based on the manufacturer’s interval. Timing belt failure on an interference engine can cause catastrophic damage. See our timing belt guide for more detail.
Battery Test
Inspect the battery terminals for corrosion (white or green powder buildup) and clean them with a wire brush if needed. Check that the terminals are tight and the battery is securely mounted. With a multimeter, measure the battery voltage with the engine off (should read 12.4V to 12.7V for a fully charged battery) and with the engine running (should read 13.5V to 14.8V, indicating the alternator is charging). Most automotive batteries last 3 to 5 years.
Lights and Wipers
Walk around the vehicle and check every light: headlights (low and high beam), tail lights, brake lights, indicators, reverse lights, fog lights, and number plate lights. Have someone press the brake pedal while you check the rear. Replace any blown globes.
Inspect the windscreen wiper blades for cracking, splitting, or streaking. Wiper blades are cheap and easy to replace, and deteriorated blades significantly reduce visibility in rain.
Keeping a Service Record
Record every service you perform with the date, odometer reading, and what was done. This maintains the vehicle’s service history for resale value and helps you track when the next service items are due. Many mechanics use a simple spreadsheet or notebook kept with the workshop manual.
The Workshop Manual Makes It All Possible
Every item in this checklist requires vehicle-specific information to do correctly: the right oil grade, the right filter, the right torque values, the right coolant type, the right fluid specifications. Your workshop manual is the single document that contains all of this for your exact vehicle.
MechanicMate offers instant-download PDF workshop manuals for over 960 vehicle models. Each manual includes complete service procedures, fluid specifications, torque values, and part numbers for your exact make, model, and year. Popular makes include Toyota, Nissan, Ford, Mazda, Honda, Hyundai, and Mitsubishi. Find your manual at mechanicmate.net/shop.
