About EngineOilGuide
Your independent, free reference for US vehicle engine oil specifications.
Who We Are
EngineOilGuide.com is an independent automotive reference website operated as a free public resource for US vehicle owners, mechanics, and automotive enthusiasts. We are not a dealership, repair shop, oil brand, or parts retailer. We have no commercial relationship with any automotive manufacturer or lubricant company.
Our site covers engine oil specifications — including viscosity grade, fluid capacity in US quarts, compatible oil filter part numbers, manufacturer-recommended service intervals, and estimated oil change costs — for passenger vehicles sold in the United States market from model year 2000 through 2026.
Our Mission
Correct engine oil specification is the single most important routine maintenance decision a vehicle owner makes. Using the wrong viscosity grade, overfilling, or extending oil change intervals beyond manufacturer recommendations can cause accelerated engine wear, reduced fuel economy, and voided warranties.
Our mission is simple: make the right oil specification for any US vehicle instantly accessible, completely free, with no ads, paywalls, or registration requirements. We believe critical vehicle maintenance data should be a public resource.
How to Use This Site
Use the search tool on our homepage to select your vehicle's make, model, and year. You will be taken to a dedicated specification page showing the recommended oil grade, capacity, oil filter, service interval, and estimated cost for your specific vehicle.
You can also browse by manufacturer using the Makes page,
then drill down to your specific model and year. All specification pages follow
the URL pattern:
/make/model/year/engine-oil
Important: Always cross-reference our data with your official vehicle owner's manual, especially for newer model years or special trim levels with different engine configurations.
Our Data Sources
We build our database from the following publicly available sources:
- ✓ US EPA and NHTSA vehicle databases — publicly available federal vehicle configuration data including make, model, year, engine displacement, and fuel type.
- ✓ FuelEconomy.gov — the official US government fuel economy database maintained by the Department of Energy, providing detailed engine specifications.
- ✓ Manufacturer technical service documentation — publicly available service interval recommendations and fluid specification guidelines.
- ✓ Industry lubricant catalogs — standard viscosity grade recommendations from the Society of Automotive Engineers (SAE) and API certification guidelines.
Data Accuracy & AI-Assisted Processing
Our vehicle database contains over 18,000 US vehicle configurations spanning 76 manufacturers and model years 2000–2026. To generate oil specifications at this scale, we use AI-assisted data processing to derive oil grade, capacity, filter, and service interval recommendations based on engine specifications sourced from public government databases.
This means our data is AI-generated and estimated — it is not sourced directly from manufacturer owner's manuals for every vehicle. While we apply rigorous rules-based logic using engine displacement, cylinder count, model year, and brand-specific requirements, individual records may contain errors or inaccuracies, particularly for rare trims or specialty vehicles.
⚠ Critical: Always verify any specification found on this site against your official vehicle owner's manual or an authorized dealership before performing maintenance. Do not rely solely on this site for maintenance decisions.
Our Commitment to Accuracy
We review and update our database periodically. If you find an error in our data, please use the contact form to report it, including your vehicle make, model, year, and the correct specification from your owner's manual.
Independence & Non-Affiliation
EngineOilGuide.com is a 100% independent reference site. We are not affiliated with, sponsored by, endorsed by, or connected to any of the following:
- Any vehicle manufacturer or OEM (Ford, Toyota, GM, Honda, BMW, etc.)
- Any motor oil brand (Mobil 1, Castrol, Pennzoil, Valvoline, Shell, etc.)
- Any automotive parts retailer (AutoZone, O'Reilly, NAPA, Amazon, etc.)
- Any oil change service chain (Jiffy Lube, Valvoline Instant Oil Change, Firestone, etc.)
All brand names, vehicle names, and trademarks referenced on this site are the property of their respective owners and are used solely for identification and reference purposes under nominative fair use. EngineOilGuide.com makes no claim of ownership over any third-party trademark or brand name.
Last Updated: March 2026