The local Autozone, runs oil clearance many times a year. I have seen full synthetic(mobil 1, pennzoil) for $2 a qt. Royal purple $4. The catch is it goes quick and sometimes odd weights. The newer cars factory requirements listed on the bottles changes, so they get rid of it. Some of the additive package settles and the bottles must be shaken. They just had Mobil 1 'annual protection' 5w20 and Pennzoil syn 0w30 for $2. I also check walmart.com 'oil clearance'. I found 5qt,(3 - pack) valvoline full syn 5w30, for $10. Yes, 15qts, for $10. I would of bought more, but thought it was a mistake. 2-days later, I went back and it was $25.99 for a 5qt jug. Amazon had Royal Purple oil and filter bundle for around $4qt and free filter/shipping. I ordered 10 qts, and it was $40.
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