OIL CHANGE
AAA Approved Auto Repair in Chicago
At Logan Square Auto Repair , our oil changes come with a sometimes-confusing question: “Do you want regular, high-mileage, or synthetic oil?”
Many people ask which kind of oil is better for their car or more economical, and sometimes the answer is too complicated to address in a few seconds at the counter.
We want to help you understand the difference between these oils and which one may be best for your vehicle.
For many cars and trucks, regular oil is a good option. It’s less expensive than other types of oil and keeps engines in good working order for the lifetime of the vehicle.
High-mileage oil is recommended for vehicles with 60,000 miles or more.
As the engine cools, regular oil precipitates to the bottom of the engine pan until the engine is turned on again. That means that on a cold start, there is very little lubrication on the cylinder walls for the first few seconds. High-mileage oil leaves a small film on the cylinder walls to keep them lubricated, even when the engine is cold.
Synthetic oil is less oil and more liquid plastic. Because this lab-produced oil has longer molecular chains, it stays slippery longer and provides better protection for more miles— about 5,000 to 7,000 miles instead of the regular 3,000. Synthetic oil is also more resistant to extreme temperatures: it won’t harden at high temperatures, nor “gel” at low winter temperatures. Some vehicles, such as hybrids and newer luxury vehicles, require synthetic oil.
As always, if you have any questions about the difference in oils or what your vehicle should take,
give us a call or stop in today!
Why Regular Oil Changes Are Non-Negotiable
Engine oil is the lifeblood of your vehicle. It lubricates hundreds of moving metal parts inside your engine, reduces heat and friction, carries away contaminants, and prevents sludge buildup that can choke oil passages and starve components of lubrication. Over time, oil breaks down and becomes contaminated with combustion byproducts, metal particles, and moisture. Old, degraded oil loses its ability to protect—and the damage it fails to prevent is often permanent. Neglecting oil changes is the single most common cause of premature engine wear and failure. A $50 oil change today can prevent a $5,000 engine repair tomorrow.
Signs Your Oil Needs to Be Changed
- The oil change or check engine light is on.
- Oil on the dipstick looks dark brown or black rather than amber.
- The oil feels gritty or thick on the dipstick.
- You hear a knocking or ticking sound from the engine.
- You notice a burning oil smell inside the cabin.
- Your engine is running hotter than normal.
- It's been more than 3,000–5,000 miles since your last change.
- Your oil level is consistently low between changes (indicating a leak or burning).
Frequently Asked Questions
How often should I get an oil change?
It depends on your vehicle and the type of oil. Conventional oil typically needs to be changed every 3,000 miles; full synthetic can last 5,000 to 7,500 miles or more. We follow your manufacturer's recommendation and let you know what's right for your specific car.
What's the difference between conventional and synthetic oil?
Conventional oil is refined from crude oil and works well for most standard driving conditions. Synthetic oil is engineered for better performance at temperature extremes, longer intervals, and higher-stress driving. Many newer vehicles require synthetic—we'll always use what your vehicle calls for.
Can I go longer between oil changes if I don't drive much?
Yes and no. Even if you're not putting on many miles, oil still degrades over time from moisture contamination and oxidation. We generally recommend an oil change at least once a year regardless of mileage, especially for vehicles driven infrequently in Chicago's humidity.
Do you top off other fluids during an oil change?
Yes. During every oil change service we also inspect and top off windshield washer fluid, check coolant levels, inspect belts and hoses, and report anything that looks like it needs attention. It's a quick health check for your whole vehicle.
