My two cents.
Consumer Union have, from time to time, made impartial tests of the most popular brands of motor oil and have invariably reported no noticeable difference in performance. I think that the perceived better performance of one brand over another is a great example of the art of merchandizing.
I use synthetic meeting the SAE specs for my car and I don't really pay attention to the color of the containers or the name written on it. I am absolutely convinced that if my engine fails it won't be due to the quality of the oil.
I use 10W30 in the winter and 5W50 in the summer. If your winters are not cold, which I don't think they are, 20W50 seems a reasonable choice. Synthetic is better than regular because it is more stable at high temperature and therefore does not degrade as quickly.
'93 300E 4Matic
'98 Nissan Altima
'00 Yamaha Road Star Silverado
Last edited by renok7; 03-14-2002 at 11:56 PM.