Riptide

Interesting.

http://en.wikipedia.org/wiki/Motor_oil#Grades
This could be true. W/regard to androdz experience has he done an analysis with 5W-30 oil in his engine under the same operating conditions? It's possible the results might not be much better than he got with the 5W-20.

illin

Even in all my ramblings...I am not saying that Amsoil is a bad product...I personally think they make good oil. It is the sleazy marketing and lack of backing that I have a problem with. If they quit trying to snake their way through the system and quit making false claims, maybe people would take them seriously.

There is just no way you can go wrong with any major manufacturer's synthetic oil. I will say that Mobil 1 is the benchmark by which all are judged. You can get it anywhere, it is priced well and has a long and proven track record. Moreover, it is API certified.

Here you go. Notice they are ACTUALLY approved:

for 6ers http://www.mobiloil.com/USA-English/...l_1_5W-30.aspx

for 8ers http://www.mobiloil.com/USA-English/...l_1_5W-20.aspx

Again...not trying to sling an oil (and no, I dont work for Exxon Mobil). I believe that there are excellent shelf oils...heck Wal-Mart's "Supertech" is API certified (SM I believe) and is a full PAO. The oil is made by one of the big brand oil producers under a special contract for Wal-Mart. Do I use it? No...but I have a loyalty to Mobil. Is it safe to use? Sure. If gas goes up, I will cut costs a bit more and switch to Supertech.

I am out...sorry again to the OP. My only intent was to keep forum members informed however "load of crap" or "misinformationed" my experience may seem to one member (that more than likely is an Amsoil dealer...though I could be wrong).

Riptide

Motorcraft 5W-20 fully synth is $6.61/quart at my dealer. Just FYI.

Nuke

I have total faith in Amsoil's products. But that's MY decision.

To the OP, ANY decent brand of synthetic blend or full syn is fine along with a good oil filter. My suggestions are Amsoil, Mobil1 and Motorcraft for full synthetics. Have fun!

buster

I hope its not the first oil change

Lt. Frank Bullitt

I will stick with Mobil 1 and a Motorcraft filter. If Mobil 1 is trusted enough for GM to use as Factory Fill on their top of the line Corvettes, its good enough for me.

Just wanted to add...

Mobil 1 is factory fill in:
[ul][*]Acura RDX[*]Aston Martin[*]All Bentley Vehicles[*]All Cadillac Vehicles[*]Chevrolet Corvette C6 and Z06[*]Chevrolet TrailBlazer SS[*]Chrysler 300C SRT-8[*]Cobalt SS S/C Coupe[*]Dodge Caliber SRT-4, Charger SRT-8, and Magnum SRT-8[*]Jeep Cherokee SRT-8[*]Mercedes-Benz AMG Vehicles[*]Mercedes SLR[*]Mitsubishi Evolution[*]Pontiac Solstice GXP[*]All Porsche Vehicles[*]Saturn Ion Red Line and Saturn Sky Red Line[*]Viper SRT-10[/ul]
I wonder if RP, Redline or Amsoil can put up a list like that?

mcburns36

If Amsoil can't back it up, what's the point of using it? Why take the chance?

Lt. Frank Bullitt

Come to think of it... I will be putting Mobil 1 Synthetic ATF in my tranny this coming weekend too.

Krazyray

I think that andrew guy is a amsoil rep for sure. Im thinking of going with rp or mobil 1 on first oil change

Riptide

OK this might be a stupid question.

If I use motorcraft fully synth 5W-20 do I use the same filter that the dealer used with the semi-synth blend 5W-20?