【公式日本語版】オイルフィルターを事前に満たすと、エンジンは傷むのか？（プリフィルの真実)

This video explores a long-standing debate: "Should you pre-fill the oil filter before installing it?" This video is an official Japanese translation produced with official permission from The Motor Oil Geek (Lake Speed ​​Jr.) for Japanese drivers and mechanics. 🟦 Original Video Does Pre-FILLING the Oil Filter Cause Engine Damage?    • Does Pre-FILLING The Oil FILTER Cause Engi...   🟦 Channel: The Motor Oil Geek    / @themotoroilgeek   🔶 Video Overview In this video, we explore a long-standing debate: "Should you pre-fill the oil filter before installing it?" Certified lubrication specialist The Motor Oil Geek (Lake Speed ​​Jr.) uses dyno testing and lab analysis (ISO cleanliness testing) to reach conclusions based on actual data, not on intuition. "New oil is dirty, so you shouldn't pour it into your engine without filtering it." This rumor has been widely spread on the internet, but is it really true? Through examples of oil pressure rise time, particle counts in the oil, and bearing wear, he explains: How does pre-filling affect your engine? Why did the misconception that "oil straight from the can is dirty" arise? What really matters? -- The four Rs (Right oil, Right place, Right time, Right amount) are explained based on scientific data. This content is intended for all drivers, mechanics, and anyone who wants to maintain a long and healthy engine. 🟦 Summary of Key Points from the Video 💠 Point 1. The "Four Rs" of Proper Lubrication In lubrication engineering, there are four fundamental principles known as the "Four Rs" for protecting engines: providing the "Right Oil" in the "Right Place" at the "Right Time" in the "Right Amount." Failing to prefill the oil filter simultaneously violates the last three of these principles, threatening engine integrity. 💠 Point 2. The Critical Difference in Oil Pressure Reach Time In experiments, an empty filter required 4 to 5 seconds for oil pressure to stabilize. During this brief period, the engine lacks an oil film, causing direct metal-to-metal contact between the bearings and crankshaft, resulting in micro-flaws. On the other hand, dyno testing demonstrated that if the system is pre-filled with oil, oil pressure rises immediately after startup. 💠 Point 3. Dispelling the "New Oil is Dirty" Myth There's a myth online that oil straight from the bottle is dirty and shouldn't be poured into an engine without a filter, but data completely refutes this. Laboratory particle count measurements (ISO cleanliness testing) have shown that new oil is significantly cleaner than oil that's been through an engine at least once. 📊 Cleanliness Data Comparison (Particles 14 microns or larger) ・New oil (direct from the bottle): 52 particles ・Oil sampled from an engine: 331 particles 🟥 Conclusion of this video "Prefilling your oil filter is a very wise decision." Here's why, based on data: ・Engine protection: When an empty filter is installed, it takes 4 to 5 seconds for oil pressure to build up, during which time the engine suffers from lack of lubrication and wear. ・Ultimate cleanliness: Fresh oil straight out of the bottle is the cleanest it's ever been, preventing any adverse effects on the engine. ・Follow the 4 Rs: This is the only way to achieve the "principle of lubrication"—delivering the right oil to the right place at the right time. 🟦The Motor Oil Geek | Official Japanese Series    • The Motor Oil Geek｜公式日本語版シリーズ   🟦 Watch the rest of the video here: [Official Japanese Version] The Truth About Oil Filters: The Unknown Truth About Bypass Valves and Differential Pressure    • 【公式日本語版】オイルフィルターの真実：ほとんどの人が知らない「バイパスバルブ」と「...   Now that we understand the importance of pre-filling, let's learn about the mechanism of how oil flows if the filter is clogged. 🟦 Related Links Speed ​​Diagnostix (Oil Analysis Service): https://www.speediagnostix.com Subscribe to Madame Sarai's Channel:    / @madamesarai   #OilFilter #EngineOil #TheMotorOilGeek #LakeSpeedJr #OilManagement #Prefill #DifferentialPressure #EngineProtection #LubricationTechnology #WearControl #TheFourRsofLubrication #ColdStart