---
id: guide-0011
title: "How often should I change my oil and why?"
category: guide
subtopic: maintenance-oil
page_type: guide
source_url: "https://www.castlechevymchenry.com"
tags: ["maintenance", "oil-change", "care"]
questions:
  - "When do I need an oil change?"
  - "What's the recommended oil-change interval?"
  - "Why does oil change matter?"
related: [first-service-visit, scheduling-service, maintenance-tires]
dealer: Castle Chevrolet McHenry
---

Oil changes are your vehicle's most fundamental maintenance-and getting them right keeps your Chevrolet running for years.

## Why Oil Matters

Oil lubricates your engine, reduces friction, and carries away heat and contaminants. Over time, oil breaks down and gets dirty. Old oil can't protect your engine as well, leading to wear and potential damage.

## Intervals

Modern Chevrolets typically need oil changes every 5,000 to 10,000 miles, depending on your model, driving habits, and oil type (synthetic vs. conventional). Your owner's manual has your exact interval. When in doubt, ask our Service team-they know your vehicle's needs.

## The Real Cost

Regular oil changes are inexpensive and prevent costly engine repairs down the road. It's the best investment you can make in your car's longevity.

## Your Next Step

If you're unsure when your last oil change was, bring your Chevrolet to us. Our technicians will check and recommend what's needed. Call (779) 600-2956 to schedule an oil-change service. We use genuine Chevrolet parts and fluid, so your vehicle gets exactly what it needs.