DETERMINING THE EFFECT OF SOY METHYL ETHER ADDITIVES TO COMMERCIAL DIESEL FUELS ON OIL CHANGE INTERVAL IN A 1.5 RENAULT DIESEL ENGINE, MODEL K9K. - Melnyk, Vasyl; Hnyp, Mariia; Zakhara, Ihor; Mykytii, Ivan (Eastern-European Journal of Enterprise Technologies, 2026)