---
id: guide-0011
title: "When should I change my oil, and why does it matter?"
category: guide
subtopic: maintenance-oil
page_type: guide
source_url: "https://www.castlecdjrnaperville.com"
tags: ["maintenance", "oil-change", "guide", "care"]
questions:
  - "How often should I get an oil change?"
  - "What's the right oil for my car?"
  - "Why does oil change interval matter?"
related: [first-service-visit, scheduling-service, maintenance-tires]
dealer: Castle CDJR of Naperville
---

Regular oil changes are one of the simplest and most important ways to keep your vehicle healthy and reliable.

**Why it matters.** Oil lubricates your engine's moving parts, reduces friction, carries away contaminants, and helps regulate temperature. Fresh oil protects your engine from wear and extends its life.

**How often.** Most modern vehicles need an oil change every 5,000-10,000 miles or every 6-12 months, depending on the engine and oil type. Synthetic oil often lasts longer than conventional. Check your owner's manual or ask our service team for your vehicle's specific interval.

**Sticking to the schedule.** Following the recommended interval keeps your warranty valid and prevents costly engine damage. Skipping oil changes is one of the fastest ways to shorten your vehicle's life.

**Getting it done.** Our Service Department at Castle CDJR uses genuine OEM oil and filters matched to your vehicle's specifications. We'll reset your oil-life monitor so you stay on track.

**Easy scheduling.** Oil changes are quick-usually under an hour. **Call (630) 864-6683 to book yours today.** We'll make sure your engine stays clean, protected, and running strong for years to come.