When it comes to vehicle maintenance, manufacturers often provide two schedules: one for "normal" driving conditions and one for "severe" driving conditions. But how do you know which one applies to you? The answer might surprise you—especially if you’re driving in Colorado.
What Are “Normal” Driving Conditions?
"Normal" driving conditions are defined as the kind of driving that puts minimal stress on your vehicle. Examples include:
- Consistent highway driving at moderate speeds.
- Light loads (no towing or heavy cargo).
- Moderate temperatures (not too hot or cold).
- Minimal idling or stop-and-go traffic.
These conditions are what manufacturers use as a baseline for their longest-recommended service intervals. For instance, oil changes under normal driving might be recommended every 7,500 miles or more, depending on your vehicle and oil type.
What Are “Severe” Driving Conditions?
"Severe" driving conditions cover scenarios where your car experiences more stress, which can cause faster wear and tear on engine oil and other components. Examples include:
- Frequent short trips (under 5 miles), where the engine doesn’t fully warm up.
- Driving in extreme temperatures (below freezing or above 90°F).
- Heavy stop-and-go traffic or prolonged idling.
- Towing trailers, hauling heavy loads, or driving with roof cargo.
- Dusty, muddy, or mountainous driving environments.
Sound familiar? If you live in Colorado, you’re probably driving under severe conditions most of the time. Boulder’s cold winters, hot summers, mountainous terrain, and stop-and-go traffic mean most local drivers should follow the severe maintenance schedule.
Why It Matters
If you’re following the normal maintenance schedule but driving in severe conditions, you could be putting your car at risk. Severe driving accelerates the breakdown of engine oil, increases engine wear, and can even lead to costly repairs if neglected.
For example, under severe conditions, oil should often be changed every 4,000 to 5,000 miles, even if your manual lists a longer interval for normal conditions. This is especially true for conventional oil. Synthetic oil may give you a little more flexibility but still needs regular attention.
The Colorado Connection
Colorado’s unique driving conditions—frequent temperature swings, elevation changes, and winter driving in snow and ice—mean most vehicles here qualify as operating under severe conditions. If you’re driving to the mountains, braving Boulder’s cold mornings, or taking short trips around town, it’s better to err on the side of caution.
What You Should Do
To keep your car running its best:
- Follow the severe maintenance schedule listed in your manual.
- Change your oil every 4,000 to 5,000 miles for conventional oil or every 5,000 to 6,000 miles for synthetic oil.
- Schedule regular check-ups every 5,000 to 6,000 miles, even if your driving conditions are less severe.
And remember, if you have a low-mileage vehicle, don’t wait too long between oil changes. Oil that sits idle for extended periods can break down and damage your engine.
Need Advice? We Can Help!
At John’s Auto Care, we’re here to help you navigate what’s best for your car. Stop by or give us a call to schedule your next oil change or inspection. We’ll make sure your vehicle is ready for whatever Colorado throws your way.