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From the manufacturer
Frequently Asked Questions
What does Rislone Fuel Injector Cleaner do?
With continued use, it reduces carbon build-up which causes pre-ignition, power loss, burned valves and broken rings. It also cleans injectors to reduce loss of fuel economy, hesitation, pinging (spark knock), and helps restore performance.
How much will my fuel mileage improve?
This varies depending on the age of the vehicle, the quality of the fuel used, and how dirty the system is. It is normal for larger increases in MPG on the first dosage and then it will usually taper off and flatten out from the second dosage on. For best results use with every tank of fuel.
How much do I use?
P/N 4732 / 32 ounce bottle – One bottle is concentrated to treat 100 gallons of gasoline or diesel fuel. For smaller & larger tanks, including bulk; add approximately 3 ounces for every 10 gallons of fuel.
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| Increases Horsepower & Torque | ✓ | ✓ | ✓ | ✓ | ✓ |
| Reduces Engine Friction, Heat & Wear | ✓ | ✓ | ✓ | ||
| Engine Noise - Ticking Lifter, Chatter | ✓ | ✓ | ✓ | ||
| Extends Engine Life through Cleaning and Protection against Wear | ✓ | ✓ | ✓ | ✓ | ✓ |
| Increases Oil Pressure | ✓ | ✓ | |||
| MoS₂ with WS₂ Nano Technology | ✓ |
With over 90 years of experience under our belt, you can trust that our revolutionary performance products will give your car a fighting chance at a long, healthy life. Follow the growth of the Rislone company below and learn about some of our favorite highlights from our long history.
Remember, your car is what it eats. Make it Rislone.
The Rislone Experience
Rislone, one of the original automotive chemical additives, was introduced to the world back in 1921. Over the years, our company rose to international popularity, becoming a go-to for many famous users, such as the U.S. Navy, not to mention professional race teams of almost every stripe. We have continued to evolve alongside the industry’s automotive technological changes in order to provide our customers with performance products for their vehicles.
Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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