i just wouldnt buy any kind of oil with the word "soil" in it. lol..

 

here is an analysis in a police car with extended idling and esxtended drain intervals
if yu know what you are looking at here you will see how good the results were.
There are alot of other reports very similar to this on that forum.Jut doy our searching
If you do know what you are looking at in the reports you will see how good the results are,if you do not know what yo are looking at then youw ill be lost.LOL
http://www.bobistheoilguy.com/forums...02#Post1447102
http://www.bobistheoilguy.com/forums...81#Post1430181

 

I only use PP or M1. I'm sure Amsoil is good oil but they just don't sell it locally. When I first switched over to synthetic at 30k I used M1 for 2-3 oil changes. I then switch over to PP and honestly felt a change in performance. The only bad think I have herd about PP is it has more detergents in it.

 

Here is a link with some very good info. on oil (especially for LS V8 engines.):

http://www.planetlsx.com/forums/showthread.php?t=1300

Warning: it is a long thread, but has a lot of good info. from people who are very knowledgeable about oil.

 

mobil1 here, if its good enough for a z06, its good enough for my pickup lol

 

German Castrol here.

 

All this oil discussion gives me a headache. I'm just going to keep using SuperTech and changing the oil when my truck tells me too.

 

Never heard a bad thing about amsoil before, I run it in all my bikes, would run it in the truck to but that ***** exspensive!

 

I have been using 5w30 Castrol. Keeps me going. I used royal purple, then thought to myself...why waste the money. I notice nothing.

Dustin

 

+1 On the castrol its been doing fine for me.....