---
id: faq-0087
title: "What's the difference between synthetic and conventional oil?"
category: faq
subtopic: service-and-maintenance
page_type: faq
source_url: "https://www.castlecdjrchesterton.com"
tags: ["oil", "synthetic", "conventional"]
questions:
  - "Should I use synthetic or regular oil?"
  - "Is synthetic oil better?"
  - "What oil does my vehicle need?"
related: [oil-change, maintenance-intervals, vehicle-specs]
dealer: Castle CDJR of Chesterton
---

Conventional oil is refined from crude oil and offers solid protection at a lower cost. Synthetic oil is lab-engineered for superior performance-it lasts longer (often 7,500-10,000+ miles vs. 3,000-5,000), flows better in cold weather, reduces engine wear, and withstands higher heat.

Modern Jeeps, RAMs, Dodges, and Chryslers often call for synthetic or synthetic-blend oil. Your owner's manual specifies which type your engine needs. Castle CDJR of Chesterton uses quality OEM-approved oils and helps you choose the right one for your vehicle and driving style.

Unsure which oil is best for you? Call **(219) 250-9487** or ask during your next service visit. Our team will confirm your vehicle's needs and explain the benefits.