If you mean brand, most oil in a new engine is a "break in" oil, so trying to keep the same oil brand or type is unnecessary.
Use a good quality non-asphalt based oil that meets the grade and weight requirements for the engine. These requirements will be in your chassis manual.
For the best protection, go with a full or blended synthetic oil.
Rick & Debbie; Brandy & Schnoodle Dexter & Fritz R.I.P. the Doxie "Kids"
2015 Jayco Pinnacle 36RSQS 5'er
2013 Chevy Silverado 3500HD LTZ, 6.6L Diesel Dually; B&W Goose Neck and Companion 5'er hitch