An oil and filter service is the single most important piece of routine maintenance you can give your car. Yet a surprising number of drivers aren’t entirely sure what it actually involves — or why skipping it can be so costly down the line. After more than 25 years working on every make and model you can think of, the team here at MnF Motors has answered this question more times than we can count. So let’s set the record straight.

Whether you’re a first-time car owner or simply want to understand what you’re paying for, this guide explains every step involved — clearly and honestly.

What Does an Oil and Filter Service Actually Include?

Despite what some garages might imply, an oil and filter service is not just a quick top-up. When carried out properly — as it is at MnF Motors — it covers a clearly defined set of steps designed to protect your engine and flag any obvious concerns before they become expensive problems.

1. Draining the Old Engine Oil

The first step is removing the old oil completely. Engine oil degrades over time — it breaks down thermally, picks up contaminants from combustion, and loses its ability to lubricate effectively. Simply topping up old oil with new is not a substitute for a proper drain and refill. We remove the sump plug, drain the oil fully, and inspect what comes out. Dark, gritty oil or a milky consistency can indicate underlying issues worth investigating further.

2. Replacing the Oil Filter

The oil filter is responsible for trapping metal particles, dirt, and other contaminants as oil circulates through your engine. A clogged or old filter simply stops doing its job. We always fit a new filter rated for your specific vehicle — never a cheap universal alternative. The filter housing gasket or seal is also inspected to prevent leaks.

3. Refilling with the Correct Grade of Fresh Engine Oil

This step matters more than many people realise. Different engines require different oil viscosities and specifications. Using the wrong grade — even a high-quality oil — can lead to poor lubrication, increased wear, or voided manufacturer warranties. At MnF Motors we always use the grade specified for your make and model, whether that’s a fully synthetic, semi-synthetic, or mineral oil.

4. Checking and Topping Up Other Fluid Levels

A thorough oil service includes checking other essential fluids while we have the bonnet up. This typically covers:

• Coolant / antifreeze — prevents overheating and freeze damage
• Brake fluid — low or contaminated fluid affects stopping power
• Power steering fluid (where applicable)
• Windscreen washer fluid
• Battery condition — a quick visual check for corrosion or damage

5. A Basic Visual Health Check

While your car is in the workshop, our mechanics carry out a visual inspection of the areas most likely to develop problems — looking at the condition of belts, hoses, tyres, and checking for any obvious leaks underneath the vehicle. This isn’t a substitute for a full inspection, but it means nothing glaringly obvious gets missed. If something raises a concern, we’ll tell you straight — without pressure to spend more than necessary.

6. Resetting the Service Indicator

Most modern vehicles have a service reminder system built into the dashboard. Once the oil change is complete, we reset this indicator so it accurately reflects when your next service is due. It sounds like a small detail, but leaving an old service light illuminated can mask genuine warnings later on.

Why Is an Oil and Filter Service So Important for Engine Health?

Engine oil is often described as the lifeblood of your car, and that’s no exaggeration. It lubricates hundreds of moving parts, helps cool internal components, prevents corrosion, and keeps combustion by-products from damaging metal surfaces. When that oil degrades, every single one of those functions suffers.

We’ve seen what happens when oil changes are left too long — and it’s not pretty. Sludge builds up in oil galleries, bearings wear prematurely, and in the worst cases, engines seize entirely. An Engine Rebuild is a significant and costly job. Regular oil changes — typically costing a fraction of any repair — are the most effective way to avoid ever getting to that point.

With a 4.9★ Google rating earned over 25 years of honest, quality work, we’re not in the business of overstating things to win jobs. The evidence really is that clear: consistent oil servicing extends engine life significantly.

How Does an Oil Service Differ from a Full Car Service?

This is one of the most common questions we get at the garage. An oil and filter service is a targeted, focused procedure — it deals specifically with the lubrication system. A Full Car Service is considerably more comprehensive. It includes everything in an oil service plus inspection and often replacement of:

• Air filter and cabin pollen filter
• Spark plugs (petrol engines)
• Brake pads, discs, and lines
• Suspension components and steering
• Drive belts and timing components
• Full diagnostic scan of the vehicle’s electronic systems

For most drivers, an oil service is recommended every year or every 10,000–12,000 miles, while a full service typically falls every two years or 24,000 miles — though this varies by manufacturer. If your vehicle’s warning lights are active, a Car Diagnostics check will be carried out alongside or in addition to the service to identify any fault codes.

What Should You Expect When You Bring Your Car to MnF Motors?

When you drop your car off at our Edmonton garage, you’ll be spoken to by someone who actually works on vehicles — not a salesperson. We’ll confirm the correct oil specification for your car before we start, carry out the service to manufacturer standards, and let you know about anything we spot that might need attention — without any pressure.

We’ve built our reputation over 25 years on doing the job properly and being straight with customers. Our About MnF Motors page gives you a better sense of who we are and what we stand for. The 4.9★ rating on Google reflects what our customers already know: good work, honest pricing, and no surprises.

If you’re unsure whether your car is due an oil change, or you can’t remember when it was last done, just give us a call on 020 8088 3150 and we’ll help you work it out.