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Mobil Delvac 1300 Super Syn Blend Diesel Oil 15W-40, Two 2.5 Gal

TLDR Review: Mobil Delvac 1300 Diesel Oil

By ShopSavvy Team

Published: May 3rd, 2025

Pros

•Significantly reduces oil consumption, with reports of decreasing from 1 quart to less than 0.25 quarts per week
•Improves engine performance with no smoke after use
•Suitable for both diesel and gasoline engines, providing a versatile option
•Features a solid additive package offering enhanced performance and stable viscosity
•Cosffective buying in a 5-gallon size, ensuring extra oil for future changes
•Widely available and reasonably priced for a top brand
•Allows for extended oil change intervals, providing savings over time

Cons

•Concerns about packaging with no individual wrapping or manufacturer box could affect perceptions of authenticity and safety
•Some users noted previous significant engine wear with other oils, bringing attention to potential issues with competitors like Amsoil

Bottom Line

Mobil Delvac 1300 Super Syn Blend Diesel Oil 15W-40 is a reliable and cost-effective choice for maintaining both diesel and gasoline engines. Its ability to reduce oil consumption and improve engine performance, along with its competitive pricing and availability, make it a solid option. However, the packaging could benefit from enhancements to ensure product confidence.

Lowest at any Popular Retailer

$34.78 at Walmart

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 13 retailers to give you the short version.