Oil Manual
Understand the right engine oil for your car
Oil Manual launched on June 30, 2026 with 2 votes.
What it does
Oil Manual is a neutral engine oil reference that explains viscosity grades, oil specifications, OEM approvals, substitutions, comparisons, and oil-change costs in plain English. It is built around one idea: check your manual first, understand the spec, then choose the oil.
Manual-first explanations of motor oil viscosity, specifications, grade comparisons, and car-specific checks anchored to your owner’s manual.
We translate your owner's manual and OEM specifications into plain English: what the viscosity numbers mean, how grades compare, and what is safe for your car, climate, and driving. Specifications first, products second. Use SAE 0W-20 engine oil meeting dexos1 Gen3. Capacity 4.4 L. Every oil recommendation contains two separate requirements. Match both. The viscosity grade alone is only half the answer. The required oil performance standard. Match it in addition to the viscosity grade. Choose the section that matches your question, from basic definitions to side-by-side comparisons. Common substitution and comparison questions, answered with the owner's manual as the primary authority. We…from oilmanual.com
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