ok, so i think i should go ahead and change my oil and i don't know what i should actually use so i was wondering if anybody could actually suggest what would be best

my truck is a 1999 4.6L V8 with 166k miles
i mainly just drive to school and work (about 20 miles a day on average)
i live in the city so the only extreme conditions it faces is the normal texas heat and don't use it for any heavy caring
i am a teenager and like to gun it sometimes

and also since i'm asking
my mom's car is past due for a chance, 2004 ford focus 2.3L V4 with 86k miles it's driven like an old woman's car and never goes above 55 unless i'm driving it

 

F150- 10w30

Focus - 5w30

I recomend Valvoline oil

 

Good choice Valvoline. I suggest what I use in all my vehicles: Wal-Mart Supertech 10W30 full synthetic.
(94 Lincoln TC 4.6L 161K, 97 F150XLT 4.6L 124K, 94 Ranger XLT 4.0L 165K)

 

I use regular valvoline oil and a quart of lucas oil stabilizer on all my vehicles.Seems to do the trick for me.

 

how come 10-30? is that recomended? mine calls for 5-30.... on all my other vehicles ive ever owned ive run typically 20-50 castrol gtx. i am a 100% castrol fan. i just did castrol gtx high mileage 5-30 though and was just curious why 10-30

 

My 02 is 5w20 - I just picked up Motorcraft at Wally world for just under 12 bucks (for 5 quarts of course)

I suggest Motorcraft oil - Ford brand, and it's cheap! Can't beat a synthetic oil change for 18 bucks! Only part I don't like is the filter change - Who in the world came up with that location?? I'm just glad mine was hand tightened.. Has anyone had one that was wrench tightened?? How do you get a tool up there?