https://amzn.to/2Dqncnq
This is the stuff I get the cheapest I can find. 5 quarts. My car only needs 3.9Qt. I seriously buy this with my old cell phone and tablet.
1. Run an app called Perk.tv
2. wait and collect points
3. once you have gained 15000 points cash out for amazon money
4. Wait for a email
5. buy oil and filter for $17
6. only use 3.9QT
7. every 4th oil change get one free from left over oil.
8. ????
9. Profit