Extended oil drains

[amermextrucker]

Just changed oil today , but not oil filter. Oil had 8800 miles on it and 297 hrs. I pulled oil sample , I will post results when i get them. I added 10 gals of oil into the pan. I used Rotella 15w40. 2 of those gals where synthetic blend , they ( menards ) didnt have anymore of the regular Rotella. I plan on changing Oil and all filters in under 300 hrs.