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From the manufacturer
Frequently Asked Questions:
How much Rislone Engine Oil Supplement with Zinc Treatment do I install?
Do not overfill.
Gasoline Engines (Cars & Light Trucks).
1996 and older – Add one bottle to engine crankcase.
1997 to 2004 – Add approximately 1⁄2 bottle (5.5 ounces) to engine.
How does Rislone Engine Oil Supplement with Zinc (ZDDP) Treatment work?
Zinc Treatment cools and lubricates the moving parts in your engine better then oil alone. The clinging properties hold the oil to metal parts preventing wear and dry starts. Special additives also prevent oil thinning at high temperatures where normal oil fails. The ZDDP creates the sacrificial layer on components where metal to metal contact happens preventing the metal itself from being worn.
What is ZDDP?
ZDDP, also called ZDP, is short for zinc dialkyldithiophosphate, is basically a combination of zinc and phosphorus. When put under pressure, like between a flat tappet camshaft and a lifter, it attaches to the metal surface and becomes a sacrificial wear material. Beyond being an anti-wear additive, it also is a corrosion inhibitor.
Questions to Ask Yourself:
- Do I want to increase my engine life, but don't want to brake the bank doing it?
- Do I have the time and money for an expensive mechanic to tune up my car?
- Many products claim to protect your engine, but at Rislone we’ve spent nearly a century proving it!
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| Rislone Engine Treatment | Rislone's Engine Oil Treatment with Zinc | Rislone's Ring Seal Smoke Repair | Rislone's High Milage Compression Repair | Rislone's Complete Fuel System Treatment | |
| Oil Leaks - Small drips & spots on the ground | ✓ | ||||
| Smoking - Blue Smoke from the Exhaust | ✓ | ✓ | ✓ | ||
| Loss of Compression - Engine blow-by | ✓ | ✓ | |||
| Engine Noise - Ticking Lifter, Chatter | ✓ | ✓ | ✓ | ||
| Extends Engine Life | ✓ | ✓ | |||
| Increases Oil Pressure | ✓ | ✓ | ✓ | ||
| ZDDP Zinc - High Performance Protection | ✓ |
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 your 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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