I was just looking at the parts store and the only synthetic castrol that they had was castrol edge with syntec. While we're at it what filters do you guys use?

Yes edge with syntec is the castrol i use. I also use the ac delco filter.

I try and stick to fram x gaurd only for the ease of pulling it off. If not that I've used delco

Fram is the worst filter in the world

what do u guys think of royal purple

I use wix filters. I use mobile 1 or castrol syntec

Most of our builds here get mobile 1 0w-40 and a gm filter.

Bosch and Purolator Pureone are very good filters at a reasonable price. Mobil One and K&N are also good but pricey. Anything but Fram is ok though. Some good features to look for are high efficiency (>99%), nitrile anti drainback valve, and lots of filter media.

I've been running Mobil1 10w-30 synthetic in my car because previously it was running 5w-30 and noticed that warm idle pressure after about 2500 miles would drop to about 30-35 psi whereas when fresh it'd hit about 40 psi. I recommend either the Wix, K&N filter with the wrench off nut at the bottom or the recommended Mobil1 filter.

Sorry Demon, but I got to side with John there, Fram is about the worst filter imo that you can ever use on a car. Can't remember where it was that I seen it, but on a comparison chart, fram was actually the worst filter tested.

I use either a wix or delco filter on my stuff