Is the Japanese Oil Change a Real Practice or TikTok Spin?

A veteran mechanic investigates a viral Japanese-style oil-change method that adds fresh oil, drains after a drive, then repeats with a second filter and oil change. While warm oil can aid drainage and supporters claim it helps remove sludge, there’s little evidence it’s standard practice in Japan, and mainstream guidance still favors a conventional drain–filter–fill routine to avoid risks like overfilling or clogging deposits. The piece also highlights how online myths can inflate niche maintenance trends.