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LUCAS OIL 10118 1 quart High Mileage Oil Stabilizer

TLDR Review: Lucas Oil 10118 Stabilizer

By ShopSavvy Team

Published: February 26th, 2026

Pros

•Significantly reduces smoking caused by valve stem seal leaks, especially helpful in stond-go traffic.
•Effective in slowing down oil leaks and cutting oil consumption in high mileage engines, often halving oil loss over long intervals.
•Noticeably improves engine smoothness, reduces engine noise, and helps maintain performance in older engines.
•Can replace the need to add a quart of oil by using once per oil change, making maintenance simpler and more cosffective.
•Trusted and highly recommended by mechanics for both engine and power steering pump leak maintenance.
•Works well when combined with synthetic oils and is reliable even in vehicles with over 200,000 miles.
•Versatile enough for use on various vehicles and yard machines, maintaining engine quality regardless of mileage.

Cons

•Users report the product froths excessively, creating air bubbles that reduce lubrication where it’s most needed, potentially harming the engine.
•Some reviews highlight poor or evasive customer support from the manufacturer when concerns are raised.
•The frothing issue can negatively affect loaearing components inside the engine due to inadequate lubrication.

Bottom Line

The LUCAS OIL 10118 High Mileage Oil Stabilizer is a solid choice if you want to extend the life and improve the performance of a high mileage engine, especially if you’re dealing with leaks or excess oil consumption. However, keep in mind the reported frothing problem that could impact lubrication negatively — so it’s best for those willing to monitor their engine’s response or already familiar with oil stabilizers. If you’re concerned about lubrication issues, you might want to explore alternative stabilizers or complementary engine treatments that specifically address frothing.

Lowest at Amazon

$15.29 at Amazon

Lowest at any Popular Retailer

$12.54 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 85 retailers to give you the short version.