1. I'm dumb about oil. 2. I want to do 10,000 mile oil changes... 3. I want spend $25 on my oil changes that I do myself. 4. I found Pen plat ultra for $14 on sale at walmart, regular pen plat $12 5. I need an oil filter that won't break my budget - I never considered filters that are over $7 but maybe I should? 6. I'm not a "reader", but I'm good for a couple paragraphs. 7. I drive my tundra gingerly to save fuel 8. any benefit to mobil 1 extended performance over that Penzoil for my usage and interval? recommendations?