Most of us are not experts when it comes to our cars. Even if it is as normal as an oil change, a fair number of us are still unsure of when and how often it needs to happen.

Dave and Katie Neer hear this question regularly:

How Often Should You Really Change Your Vehicle's Engine Oil?

The answer depends on your vehicle, how you drive it, and — most importantly — how long you plan to keep it.

What the Manufacturers Recommend

If your vehicle uses full synthetic oil (which is true for most vehicles built within the last 10–15 years), manufacturers typically recommend changing the oil:

• Every 5,000–7,500 miles or every 6–12 months, whichever comes first.

• Some manufacturers, particularly European brands like BMW, recommend intervals of 10,000 miles or even longer when the correct oil and filter are used.

If your vehicle uses conventional oil (usually older vehicles), the recommendation is generally:

• Every 3,000–5,000 miles or every 3–6 months.

These recommendations are based on vehicles that are in good mechanical condition and are properly maintained.

Our Recommendation Has Evolved

For the first several years we were in business, we generally followed the manufacturer's recommended oil change intervals.

After more than 14 years of repairing vehicles — and after replacing far too many timing chains and engines — we've refined our recommendation.

We've found that manufacturer intervals usually work well for newer vehicles that are still under warranty and have relatively low mileage. But most of our customers don't trade in their vehicles at 50,000 miles. They want them to last well beyond 100,000 miles.

That's where things begin to change.

What Happens as Vehicles Age?

As engines accumulate miles, internal components naturally wear. One result is that many engines begin to consume small amounts of oil between oil changes.

Here's a common example.

A customer brings in a 10-year-old Honda CR-V with around 80,000 miles for a routine oil change. During our courtesy inspection, we check the oil level and discover it's one or two quarts low.

The customer is understandably surprised. They assume there's a major oil leak.

We inspect the vehicle and find none. Then they wonder if the previous shop simply didn't fill it correctly.

But at the next oil change...it's low again. And then again.

What's happening is that the engine is gradually burning oil as part of the normal aging process.

The Bigger Problem Isn't the Oil Change Interval—It's the Oil Level

When we find an engine that's consuming oil, we advise customers to check the oil level regularly— ideally every time they fill the gas tank — and add oil whenever needed.

Unfortunately, life gets busy. Many people forget. The next time they come in, they're three quarts low.

We explain how fortunate they are that serious damage hasn't already occurred. We even encourage them to stop by anytime, and we'll gladly top off the oil for them.

But sometimes they don't. They are busy.

Months later the vehicle arrives on a tow truck — or barely makes it into the parking lot — with a check engine light, rattling engine, poor performance, or stalling. We check the dipstick and find only a quart of oil remaining. The engine timing is now off because the timing chain has been damaged from inadequate lubrication.

Instead of a routine oil service, they're facing a timing chain replacement—or even a complete engine replacement.

Many of these vehicles have around 100,000 miles.

That's a heartbreaking conversation for any vehicle owner, especially when they're still making payments on the car.

Our Advice

If your goal is to keep your vehicle for many years, don't rely solely on the oil life monitor in the dashboard.

Oil life monitors estimate when the oil itself has reached the end of its useful life. They do not measure how much oil is actually left in the engine.

If your engine is consuming oil, it can become dangerously low long before the oil life monitor tells you it's time for an oil change.

For many customers, we recommend going "old school." Use the windshield oil change sticker or keep a reminder on your phone.

A slightly more frequent oil change is inexpensive insurance compared to replacing a timing chain or an engine.

You May Need More Frequent Oil Changes If You:

• Frequently make short trips where the engine never fully warms up.

• Spend a lot of time in stop-and-go traffic.

• Tow trailers or haul heavy loads.

• Drive in very hot, very cold, or dusty conditions.

• Drive a turbocharged vehicle aggressively.

These are all considered severe service, and manufacturers often recommend shorter maintenance intervals under these conditions.

Our Practical Recommendation

For most drivers, here's what we recommend:

• 3,000–5,000 miles if your vehicle has higher mileage, has begun consuming oil, or you simply want to maximize engine life.

• Up to 7,500 miles if your vehicle has relatively low mileage, sees mostly highway driving, and your owner's manual supports that interval.

• Always change the oil at least once a year, even if you haven't reached the mileage interval.

Just as important, check the oil level regularly, especially once your vehicle begins accumulating miles.

Don't Forget the Oil Filter

The oil filter is almost as important as the oil itself.

A premium-quality filter traps contaminants more effectively, maintains proper oil flow and is designed to last for the entire service interval. A cheap filter may not provide the same level of protection.

What About European Vehicles?

If you own a European vehicle, choosing the correct oil is especially important.

Many people think that if the bottle says 5W-30, it's the right oil. Not necessarily.

European manufacturers often require oils that meet very specific performance standards, such as Mercedes-Benz MB 229.5, Volkswagen 504.00/507.00, BMW Longlife-01, and others.

Two oils may both be labeled 5W-30, yet only one meets your manufacturer's requirements.

Using the wrong specification can reduce engine protection and may shorten the life of expensive engine components.

Whether you have your oil changed at a repair shop or do it yourself, always verify that the oil meets the exact specification listed in your owner's manual. You'll find those specifications printed on the back of the oil container.

The Bottom Line

For most vehicles, we believe that changing the oil every 5,000 miles using a quality full synthetic oil and a premium oil filter offers an excellent balance of protection, convenience and cost.

If your vehicle has higher mileage or has begun consuming oil, shortening that interval to 3,000 –5,000 miles provides an extra margin of safety that can help prevent expensive repairs.

An extra oil change every year costs far less than replacing a timing chain or an engine — and it's one of the simplest investments you can make if you want your vehicle to last for many years.

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Thanks, Dave and Katie! Solomon’s Garage is located at 122 S Detroit St, West Liberty, OH. Call: (937)887-0029 to schedule your oil change today, or visit: https://www.solomonsgarage.com for more information.