: the process of removing old, dirty oil in a vehicle and replacing it with clean oil Show The car needs an oil change. Dictionary Entries Near oil changeCite this Entry“Oil change.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oil%20change. Accessed 29 Nov. 2022. ShareLove words? Need even more definitions? Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Merriam-Webster unabridged
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