mobil 1 5w30 synthetic or mobil 1 10w30 whichever one is on the shelf that im lookin at haha, walmart sells this for 20$ for 5quarts, i used to use "Q" synthetic 10w30
Mobil One 10w30, Socal 118k on the odometer and i havent seen any oil bleed through anywhere. But then again i am not the original owner so maybe work was done to the engine but i doubt it.