I run Amsoil full synthetic 5W30 in my car. I change it about every 12,000 miles or so (it'* rated for 24,000.) I change the filter every 3,000 though.

Mobil 1 5w30 winter 10w30 summer and midgrade gas.

Valvoline 10W-30...and 87 gas...usually either Phillips 66 or Diamond Shamrock....except for when my mom fillls it up at Caseys(also known as water)

I'll change it when my oil life indicator gets to around 30% or less, however many miles that is. GM suggested to their service depts. to use that indicator, so I will, too.

mobil 1 5w-30 any premium fuel , 9000 to 10000 miles on the oil.

Valvoline Max Life 10W-30 until i replace some internals
And really any fuel is good enough though for winter time shell or BP have better additive to prevent fuel line freeze up if you worry about that.
At the local Speedway they have a cam2 pump which is like 103 Octane or more i believe. Used it once to clean up the fuel sytem and check times.
KK

Always Amoco/BP 87 octane (best fuel mileage for my car). I don't like to switch brands of fuel. I don't trust it, and I don't like to mix the additives that different stations add. Kwik Trip fuel always made my car ping. If I can't get to a BP, I'll go to Mobil. Never anything else though.

I use Mobil Drive Clean oil, changed every 2,000 miles...keeps everything clean and responsive.

Those of you who use Pennzoil....beware. Pennzoil Z7 (I believe) has a parafin wax base and can coat rods and bearngs if used for a long period of time, leaving everything looking like a candle was dripping on it.