Feb 25, 2026

If you’re driving a Chevrolet or GMC through Wilmington, Braidwood, or Coal City, you’ve likely noticed that a professional oil change at a certified dealer takes about 45 to 60 minutes. While “15-minute” lube shops are tempting, your modern GM engine is a high-performance machine that values precision over a stopwatch.

At Arnie Bauer Chevrolet GMC, we believe in doing it right the first time. Here is a look behind the scenes at why a proper oil change takes a bit more time—and why your vehicle will thank you for it.


The Clock is Ticking for a Reason: The 45-60 Minute Standard

When you bring your truck or SUV to our Wilmington, IL service center, we aren’t just swapping fluid. We are performing a comprehensive maintenance routine. That hour of service ensures:

  • A Complete Drain: Rushing the process leaves old, contaminated sludge at the bottom of the pan. We let gravity do its job so your new oil stays clean longer.
  • Dexos® Certified Standards: Most modern GM engines require dexos-approved synthetic oil. Using the wrong grade or a “generic” blend can tank your fuel economy and even void your powertrain warranty.
  • Filter Integrity: We replace your filter with a genuine GM part. “Quick-lube” shops often use lower-grade filters that can’t handle the high-pressure demands of a GMC Sierra or Chevy Silverado.

Why Wilmington Drivers Choose Certified GM Service

While you wait in our comfortable lounge, our factory-trained technicians are doing more than just turning a wrench. Every oil change at Arnie Bauer Chevrolet GMC includes:

  1. Multi-Point Inspection: We check your tire pressure, brake pads, battery health, and fluid levels. It’s better to catch a small leak in Wilmington today than break down on I-55 tomorrow.
  2. Software & Recall Check: Because we are a certified dealer, we check for any GM software updates or open recalls—something a neighborhood “quickie” shop simply cannot do.
  3. Oil Life Monitor Reset: We ensure your vehicle’s computer is accurately recalibrated to your new oil, ensuring your dashboard alerts stay synchronized with your driving habits.

How Often Should You Visit Arnie Bauer for Service?

Thanks to advanced synthetic oils, most Wilmington drivers can go between 5,000 and 7,500 miles between visits. However, your Oil Life Monitoring System is the ultimate boss.

Pro Tip: Your OnStar® system will give you a “non-critical” warning at 20% oil life. We recommend scheduling your service appointment once you hit the 10% mark to ensure your engine never runs on degraded oil.

The Bottom Line: Protection Over Speed

A slightly longer wait today prevents a massive repair bill tomorrow. By using the correct dexos oil, allowing for a full drain, and performing a safety inspection, we protect the resale value and longevity of your vehicle.

Need an oil change in Wilmington, IL? Keep your Chevy or GMC running like new. Click here to schedule your Certified GM Service at Arnie Bauer Chevrolet GMC today!