Big Red, you can find Chevron motor oil at checker auto parts stores and NAPA stores. I was able to get some Chevron oil on sale at a checker store for 99 cents a quart. I feel a person is wise to use the best motor oil they can find, even if the difference in quality is not great. Thanks to this site (lots of people who visit this site have motor oil checked out at labs) we know that two of the best conventional motor oils are Castrol and Chevron. Some people at this site have said that Castrol does not flow too good in the cold, so I personally like the idea of using Chevron. Of course, a person could use Chevron or Castrol in the warmer months and maybe Mobil 1 in the winter. I have heard from an incredible number of people (a man who used to be the manager of the Nissan dealership, people at new car dealerships, men involved in oil distribution, etc.) that Castrol is a really good oil. Some people at this site do not like Valvoline motor oil. I like the idea of a good oil filter and right now I am leaning towards the Wix, which is also available at NAPA and CarQuest auto parts stores as their premium oil filters. One product I found out about at this site which I really believe in is Auto-RX-even if an engine is clean you can keep the engine clean by using 3 oz. with an oil change.