Amazon.com has 1 quart bottles of Pennzoil 5W-30 Platinum Full Synthetic Motor Oil for $3.21 as a Add-On item. Shipping is free with Prime or a $25 order. Pennzoil is offering a $2 per quart rebate, up to $10, net price $1.21 per quart. Two rebates per household, offer expires June 30, 2018.
https://www.amazon.com/gp/product/B000KKJQS2
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