Thanks for the clarification.The Delo 400 XSP 5W/40 that @userfriendly used is an SN+ rated oil so perfectly fine in a gasoline engine. Also, the 6.2 Ford is a port injected engine so not nearly as susceptible to the LSPI events, as referenced in the video, as a TGDI (like the Audi that the piston in the picture/video came with).