best oil for 3.4 impala

I just put all new dash in my 05 impala as the stereo shorted out and burned my car,I have here up and running and was wondering what would be the best oil and filter for the 3.4 engine, alot of people swear that by using mobile 1 full synthetic makes the 3.4's smoother and quieter and gets better gas mileage, anyone know if that is true or not?

This site will give you some good info on oil/lubricants in general.
http://theoildrop.server101.com/forums/ubbthreads.php?Cat=0

The best filter for your vehicle is an A C Delco. I've used them on all my GM vehicles for the past 20+ years and have never had a problem. On two of my GM vehicles that had the 3.4 (both '97 Ventures) I never used a synthetic oil in the engine. I never had a problem related to the oil I used causing any issues.Both have over 100,000 miles. I have read that using synthetic oil does not substantially increase your gas mileage. It mainly benefits your engine and it's internal components. Don't get me wrong, I'm not saying not to use synthetic. In fact I'm solely using synthetic in my 2006 Chevrolet Uplander which has the 3.5 engine. I like many aspects of synthetics such as extended change intervals, the protection package within the oil, etc. I'm not sure how many miles you have on your vehicle, but if you read through some of the other threads about synthetics on this site you'll see that using synthetic oil in an older or higher mileage engine can cause minor oil leaks because of the sludge reducing action of the synthetics that "clean out" the inside of your engine.

Changing the oil and filter at least every year is more important than any specific oil you would use. When the oil breaks down, it's dead -- not when it's "dirty."

Since everyone's driving habits are not the same, it's impossible to guess how long you can go, or what the "best" oil could/would be. The current condition of your engine, and the climate range that it is used, also woluld figure into the specifics about if any particular type or grade of oil would help or hurt.

If you spend the extra for full synthetic oil, the mileage savings in terms of gas purchases may not make up for the difference, even over the course of a year, especially if the price/gallon keeps rising. Think much less than 1 gallon per tank in terms of savings. You want synthetic for the extra protection it provides under extreme conditions (RPM and heat kills motors), not for fuel economy.

"quieter?" Synthetics tend to be "thinner" (lighter weight) than conventional fossil oils -- it's unlikely that they would quiet an engine, but it's possible that their ability to "stick" to engine internals may dampen some types of engine noise (valvetrain noise perhaps?).

Changing the oil and filter at least every year is more important than any specific oil you would use. When the oil breaks down, it's dead -- not when it's "dirty."

Since everyone's driving habits are not the same, it's impossible to guess how long you can go, or what the "best" oil could/would be. The current condition of your engine, and the climate range that it is used, also woluld figure into the specifics about if any particular type or grade of oil would help or hurt.

If you spend the extra for full synthetic oil, the mileage savings in terms of gas purchases may not make up for the difference, even over the course of a year, especially if the price/gallon keeps rising. Think much less than 1 gallon per tank in terms of savings. You want synthetic for the extra protection it provides under extreme conditions (RPM and heat kills motors), not for fuel economy.

"quieter?" Synthetics tend to be "thinner" (lighter weight) than conventional fossil oils -- it's unlikely that they would quiet an engine, but it's possible that their ability to "stick" to engine internals may dampen some types of engine noise (valvetrain noise perhaps?).Just got my impala back on the road after a power surge through the stereo shorted ,melted the wiring in my car that caused a small fire burning out the dash, replaced the whole dash including stereo and full wiring harness and windsheild come to find out that the surging and static was still coming through all of the speakers, baffelled after trying to find the problem in the first place before the fire we came to find out that when my 80 year old mother slammed the pass front door so hard the problem started from there. what we came to discover today that there is an internal antenna relay on the top left hand corner of the inside of the back glass, it was halfway off, when we connected it on all the way and secured the clip,all the surging and static dissappeared instantly,to all you impala owners out there, whether you are having problems or not with your car stereo,check this clip on the inside back window to make sure it is on all the way and locked into place, this plug is another ground for the stereo in these impalas and are famous for coming uncliped, something I and the dealer mechanics overlooked,

I would guess that the relay ground getting disconnected may have been the initial (chicken-egg) issue that caused the radio to short out -- a disconnected ground will often cause the ground to be found eleswhere, often "through" a component that cannot support the extra current.

In the trunk, wires are easily dislodged by routine loading and unloading, so it is a good idea to check for hanging harnesses and loose connectors whenever you get the chance.