The short answer is slightly, but far less than many people think, especially when a high-quality motor oil is used.
After an oil change, some of the oil drains back into the oil pan and the new filter may need to fill before full system pressure is established. As a result, it can take a few moments for oil to circulate through the engine and reach normal operating pressure.
However, the engine is not starting completely dry. Even after draining the old oil, a protective lubricant film remains on critical components such as bearings, camshafts, timing components, piston rings, and cylinder walls. This residual film helps prevent metal-to-metal contact during the brief period before full oil pressure is restored.
This is where oil quality matters.
At 465 LUBRICANTS, our API SP and API SQ licensed Full Synthetic and Synthetic Blend motor oils are formulated with modern additive technology designed to protect engines during startup, one of the most critical operating conditions an engine experiences. Premium anti-wear additives help maintain a protective barrier on metal surfaces, while advanced oxidation inhibitors, detergents, dispersants, and friction modifiers provide protection throughout the entire oil drain interval.
Not all motor oils offer the same level of protection. While older API categories such as SL or SN provided excellent protection for the vehicles of their era, modern API SP and SQ specifications were developed to address the demands of today’s engines, including improved wear protection, deposit control, oxidation resistance, timing chain protection, and performance in severe operating conditions.
That’s why 465 LUBRICANTS focuses on current, licensed API SP and SQ formulations, not outdated specifications. Our products are designed for modern engines, modern operating temperatures, and modern performance requirements.
For the first startup after an oil change, the best practice is simple:
Verify the proper oil level.
Start the engine and let it idle normally.
Do not immediately race or heavily load the engine.
Confirm the oil pressure light goes out as expected.
When quality oil is used, the brief delay in reaching full oil pressure is generally not a concern for engine life. In fact, the fresh oil and new filter provide far greater long-term benefits than any negligible wear that may occur during the initial startup.
Bottom line: Starting an engine after an oil change may create a brief period before full oil pressure is established, but a modern engine protected by 465 LUBRICANTS API SP and API SQ Full Synthetic or Synthetic Blend motor oils is equipped with advanced anti-wear chemistry specifically designed to protect critical components during startup. That’s the advantage of using a modern, licensed lubricant instead of relying on outdated oil technology.
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