If your car takes synthetic oil, and you like to change it yourself, you’d be hard-pressed to find a better deal than $11 for five quarts of Mobil 1 synthetic oil, complete with Prime shipping. You’ll need to send in your receipt to get a $12 mail-in rebate, but for this price, it’s worth the hassle. A few oil weights are listed below, but click here for more options.

Note: Though Amazon isn’t listed as a retailer on the rebate form, there are countless forum threads online from previous Mobil rebate offers saying they honor it.


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