Royal Purple HPS 10W-40 bottle pour highlighting Synerlec protection for performance engines.
Royal Purple HPS 10W-40 bottle pour highlighting Synerlec protection for performance engines.

Royal Purple HPS 10W-40 High-Performance Street Synthetic Motor Oil with Synerlec – 12 Quart

Premium performance for demanding engines Royal Purple HPS 10W-40 High-Performance Street Synthetic Motor Oil with Synerlec is...
Vendor: Royal Purple
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Royal Purple HPS 10W-40 bottle pour highlighting Synerlec protection for performance engines.

Royal Purple HPS 10W-40 High-Performance Street Synthetic Motor Oil with Synerlec – 12 Quart

£191.09
Royal Purple HPS 10W-40 bottle pour highlighting Synerlec protection for performance engines.

Royal Purple HPS 10W-40 High-Performance Street Synthetic Motor Oil with Synerlec – 12 Quart

£191.09
Description
Description
x

Premium performance for demanding engines

Royal Purple HPS 10W-40 High-Performance Street Synthetic Motor Oil with Synerlec is engineered for drivers who push modern, high‑performance and modified engines. Packaged in a 12‑quart container, this oil is designed for garage-ready routine maintenance where performance and protection matter. While it isn’t intended for engines still under factory warranty, it aims to deliver a higher level of protection and responsiveness under stress.

Key benefits engineered into HPS

  • Maximum wear protection through zinc/phosphorus anti-wear additives paired with Synerlec technology
  • Potential to increase horsepower and torque by maintaining optimal friction conditions
  • Advanced protection for performance and modified engines that see higher loads
  • Exceptional oxidation stability to resist breakdown during sustained high‑temperature operation
  • Fortified with zinc/phosphorus anti‑wear chemistry to minimize metal‑to‑metal wear

Performance under stress

The HPS formulation responds to elevated pressure by adjusting viscosity behavior, helping maintain a strong lubricating film when engines endure peak loads. This can translate to steadier performance during aggressive driving, track sessions, or spirited daily use.

What this means for your vehicle

By combining Synerlec with a robust zinc/phosphorus package, HPS aims to preserve engine longevity, reduce wear, and support consistent performance. Real‑world results depend on driving style, climate, and the specific engine configuration.

Specifications at a glance

  • Viscosities available: 5W-20, 5W-30, 10W-30, 10W-40, 20W-50
  • Recommended for high-performance and modified engines
  • Formulated for severe service and demanding driving conditions

FAQ

Q: What makes Royal Purple HPS 10W-40 suitable for high-performance or modified engines?

A: It combines Synerlec with zinc/phosphorus anti-wear to help protect metal-to-metal contact under stress.

Q: Is HPS 10W-40 recommended for engines outside manufacturer warranty?

A: Yes, it targets high-performance and modified engines, with strong oxidation resistance and protection under high loads.

Shipping & Return
Shipping & Return
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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.

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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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