+120°
🛢️Motor oil & fluids
Pennzoil 10W-30 Motor Oil, 5 Quart
$4.50Cost / quart
Price checked Jul 21 · confirm on Amazon🔥 Popularpack price$22.48
subscribe & save$4.27−5%
Pennzoil · Amazon
See on Amazon Pennzoil vs Mobil
Which is cheaper per quart? Ranked from real, continuously tracked Amazon US prices — not sticker prices.
Pennzoil wins on cost per quart
As of July 2026, Pennzoil is cheaper per quart: about $5.88/quart at the median vs $7.19/quart for Mobil — across 2 Pennzoil and 8 Mobil deals we track. Prices re-checked continuously.
| Per quart | Pennzoil | Mobil |
|---|---|---|
| Median | $5.88 | $7.19 |
| Cheapest | $4.50 | $4.00 |
| Products tracked | 2 | 8 |
See all of each brand ranked by cost per quart: Pennzoil, Mobil · or the best motor oil & fluids of 2026.
Cheapest Pennzoil per quart
+74°
🛢️Motor oil & fluids
Pennzoil Platinum Full Synthetic 5W-30 Motor Oil, 5 Quart
$5.88Cost / quart
Price checked Jul 19 · confirm on Amazonpack price$29.38
Pennzoil · Amazon
See on Amazon Cheapest Mobil per quart
+69°
🛢️Motor oil & fluids
Mobil 1 Truck & SUV Full Synthetic Motor Oil 0W-20
$4.00Cost / quart
Price checked Jul 21 · confirm on Amazonpack price$40.00$63.94↓37%
Mobil · Amazon
See on Amazon +72°
🛢️Motor oil & fluids
Mobil 1 High Mileage Full Synthetic Motor Oil 0W-20, 5 Quart
$6.39Cost / quart
Price checked Jul 21 · confirm on Amazonpack price$31.97
Mobil · Amazon
See on Amazon +69°
🛢️Motor oil & fluids
Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil 0W-20
$6.39Cost / quart
Price checked Jul 21 · confirm on Amazonpack price$31.97
Mobil · Amazon
See on Amazon +66°
🛢️Motor oil & fluids
Mobil 1 High Mileage Full Synthetic Motor Oil 5W-30, 5 Quart
$6.39Cost / quart
Price checked Jul 21 · confirm on Amazonpack price$31.97
Mobil · Amazon
See on Amazon