Good question! In the past, I started with synthetic and maintained with good results. My '96 Ranger w/ 4.0 has 91K and is really doing well. I am sorry Mobil 1 does not have 5W-20. I really am partial to this oil. However, if I have to have a different weight, I might as well consider a different brand. Any one have ideas.<font face="Verdana, Arial" size="2">Originally posted by POR5CHE:
No Mobil1 5W-20 oil on their Website. http://www.mobil1.com/index.jsp Other mfg's have 5W-20 but not familiar with any of them.
Do you recommend doing Break-in period with "normal oil" then switching to a synthetic oil? </font>
<font face="Verdana, Arial" size="2">Originally posted by Jazzfan:
Amsoil has developed a 5W-20 full synthetic oil specifically for the 2001 and up Ford and Honda vehicles that specify 5W-20. It meets and exceeds all Ford and Honda specs. I'm planning to start using it in my 2001 Odyssey at the 7500 mile mark.</font>
Amsoil is supposed to be a very good brand of oil (Redline is also). As far as I know, it is sold mostly by race shops, and individual amsoil distributers. I have never seen it in a "regular" store. I think you can purchase direct from Amsoil at:<font face="Verdana, Arial" size="2">I have never heard or Amsoil oil. Where is it found? </font>