~(2 lbs. 9X4X2)~ Royal Purple HPS 10W-40 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle

Name: ~(2 lbs. 9X4X2)~ Royal Purple HPS 10W-40 High Performance Street Synthetic Motor Oil with Synerlec - 1 Quart Bottle
Brand: Royal Purple
SKU: R022 31140
Price: 200.47 USD
Availability: InStock

$200.47

SKU: R022 31140

In Stock

Ships by Jun 20

Free Shipping

Non-Returnable Item

Description

The Royal Purple 31140 is a 10W-40 synthetic motor oil designed for high-performance and modified engines. It provides superior protection against heat and wear, making it ideal for demanding applications. This oil is fortified with a high level of zinc/phosphorus anti-wear additive and Royal Purple's proprietary Synerlec additive technology.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	Royal Purple
Part Number	R022 31140

Videos

What has royal purple done to my engine? Should you switch your oil to Royal purple? (Part 1)

The Truth About Royal Purple Engine Oil for Your Car

Is Royal Purple better than Amsoil? Let's find out!

Pennzoil Platinum Engine oil VS Royal purple HPS Full synthetic

Royal Purple Vs Mobil 1 Motor Oil: Which One is The Best? [2025]

Royal Purple HPS 10W40 Engine Oil Test Peter Tester

Best engine oil Royal purple HPS Full Synthetic?

Addressing your frequently asked Royal Purple questions. Will Royal Purple actually ruin engines??

Motul 8100 EcoEnergy vs Royal Purple HPS 5w30 shocking results Full Synthetic Oil

Can Royal Purple HPS Clean an Old Engine?

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy