RAM Aircraft
Maintaining Your AirplaneReciprocating Engine Oil 101
Oil types fall into three main types— straight mineral, ashless-dispersant, and synthetic— and all need to be changed regularly.
Richard Scarbrough![](https://www.flyingmag.com/uploads/2023/02/IMG_9572-Courtesy-R-Scarbrough-scaled.jpg?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
![](https://www.flyingmag.com/uploads/2022/09/Pilot-and-copilot_adobe-stock-rs.jpg?auto=webp&auto=webp&optimize=high&quality=70&width=1440)
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