---
id: department-0004
title: "How do oil and fluid changes work at Castle Cadillac McHenry?"
category: department
subtopic: service-oil-changes
page_type: department
source_url: "https://www.castlecadillacmchenry.com"
tags: ["service", "maintenance", "oil", "fluids"]
questions:
  - "Do you do oil changes?"
  - "How often should I get an oil change?"
  - "What fluids do you service?"
related: [service-routine-maintenance, service-scheduling]
dealer: Castle Cadillac McHenry
---

Oil and fluid changes are cornerstone maintenance that keep your engine and systems healthy. Our service team makes it quick, affordable, and thorough.

**What we handle:**
- Engine oil and filter replacement using quality OEM fluids
- Transmission fluid checks and service
- Coolant level and condition checks
- Brake fluid inspection
- Power steering fluid top-offs
- Windshield washer fluid refill

**Why it matters:**
Fresh oil reduces wear, improves fuel economy, and extends engine life. Your vehicle's manual specifies intervals; we follow those guidelines and recommend service based on your driving habits.

**Pricing and scheduling:**
Cost varies by vehicle and fluid type. Call **(779) 265-4427** to ask about current pricing, or book an appointment online at **https://www.castlecadillacmchenry.com**. We'll get you in at a time that works for you-often the same day.