You can return any unopened product for a full refund or exchange. You will be responsible for additional shipping costs associated with the return or exchange. Five gal pails, 55 gal drums, and freight returns will incur an additional 15% re-stocking fee. Contact us at to request a return label or to process your exchange.

Please contact us at with photos and description(s) of damaged product(s) within 7 days, and we will replace them as quickly as possible.

Shipments over 150 pounds, including orders of 4 or more 5-gal pails, 16-gal kegs, or 55-gal drums, may require freight shipping. We cover up to $200 in shipping costs for orders over $150. Oversize, residential, and remote deliveries may be subject to additional charges. An associate will contact you if additional shipping charges apply.

It is recommended that you add the Oil Stabilizer with every oil change (20% Stabilizer, 80% Oil). You may also use the stabilizer to top off between oil changes in order to help reduce oil consumption in an older engine, or maintain peak performance in a new engine.
Yes, In addition to being great for your engine, you can also mix it 25% / 75% in the transmission and 50% / 50% in the differential. Lucas Oil Stabilizer blends with any petroleum-based or synthetic oil, and is formulated for gasoline or diesel engines.
No, using Lucas Stabilizer will not void a new car warranty. Stabilizer is a 100% petroleum product that will blend with both synthetic and non-synthetic oils.
You don't have to have a specific amount of wear before you start using our Oil Stabilizer. Put in a quart each time you change the oil in your car. You should be able to go at least 50% longer between oil changes and your engine will last much, much longer.
In newer and smaller vehicles that require light weight oils such as 5W-30, we recommend our Pure Synthetic Oil Stabilizer. Pure Synthetic Stabilizer was developed specifically for engines that run on lighter weight engine oils and in newer vehicles.

Yes, contrary to common belief, you can mix synthetic and non-synthetic oil. A common reason for doing so is if your vehicle requires a light weight oil like 5W-30. Pure Synthetic Stabilizer was developed specifically for engines that run on lighter weight engine oils and in newer vehicles.

Lucas Fuel Treatment was designed to clean and lubricate the fuel systems of both gasoline and diesel engines.

Since Lucas Fuel Treatment does not contain any solvents, it is perfectly safe to run with every fill up. In fact, many of our users run our fuel treatment with every tank because they see an improvement in fuel mileage. The savings can be so great that in some cases the money you save in fuel pays for the product and then some.

Yes, the Lucas Power Steering Stop Leak will correct squealing and hard spots and fix most seal leaks in a worn rack and pinion. You can also use the Power Steering Stop Leak in new units to prevent wear.

No, Lucas Power Steering Stop Leak is effective on seal leaks. Leaks resulting in physical damage to power steering units will require attention from your certified mechanic.

Yes, in some cases two bottles may be required to stop a seal leak in your power steering unit.

We believe so strongly in our Power Steering Stop Leak that we guarantee it will stop your leaking power steering unit or your money back! To receive a refund mail your ORIGINAL receipt with return address to Lucas Oil Products, 302 N Sheridan St, Corona, CA 92880.