[knuckless]

10w 30 castrol GTX high mileage is what i use on my 289 with 196,000. i usually use mobile 1 on my 05 but i may be switching to castrol edge because ive heard GREAT things about it and thats what my dads been using in is new malibu.

anyway its your choice, you can choose a high mileage oil or the best synthetic oil on the market. but if you engine hasnt used synthetic before its good to stay away from a synthetic because the engine isnt used to it synthetic and has had 120,000 of conventional