Hey, yesterday I was making my decision on which Oil I should buy for my 03 S2000. And I came down to Mobil 1 or Amsoil. But since I only have run my car for about 5233 miles, I would like to ask you guys (or girls) which one is better taking in consideration the price and the quality.

 

I have heard good things about amsoil. Mobil 1 isn't too shabby either. At 5,233 miles, you may want to wait another 3-4k miles to make sure everything is worn-in.

 

I personally use Mobil 1

 

check out the oil journals, there is good breakdown of the various oils
https://www.s2ki.com/forums/index.php?showtopic=195574

 

valvoline synpower for me.

and don't change to synthetic until you hit 10k. you need time for the FRM walls to break in properly.

also check the oil journals in the tech forum here:
https://www.s2ki.com/forums/index.php?showtopic=195574


and here's comparisons of several 10w30 oils. mobil 1 is decent, but there are better synthetics out there.
http://forums.s2ki.com/forums/showthread.p...threadid=169852