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Mobil 1 Advanced Full Synthetic 5W-20 is a full-synthetic engine oil sold here as a five-quart pack, enough for one oil change on most four-cylinder and V6 engines. It is built on Mobil 1's long-running synthetic base stock, with detergents and anti-wear additives aimed at keeping engines clean and protecting them in cold starts and hot running. It suits drivers who want a proven off-the-shelf synthetic for a gasoline engine calling for 5W-20, and it competes with other full synthetics such as Castrol Edge, Pennzoil Platinum and Valvoline Advanced, which are similarly priced and similarly rated. Owners tend to trust the brand and report smooth, quiet running; the main knock is that it is a mass-market synthetic rather than a specialty formula.
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Lowest price we've seen: $49.85 on Nov 9 at Walmart. Tracked across 1 store since Nov 9.
Owners of cars and trucks using 5W-20 generally report smooth, quiet engines and clean oil at drain time, and many stick with Mobil 1 for years. Complaints are mostly about packaging and about it being a standard synthetic rather than anything special.
