Royal Purple 15W-40 Synthetic Motor Oil (1 Gallon) 04154
For All Diesel Engines - 1 Gallon Bottle
✔ QuickShips by Next Business Day*
Royal Purple® Motor Oil is a tough, long life, high performance oil that delivers superior protection and enhanced performance to gasoline and diesel engines. It gains its performance advantages from a blend of synthetic oils plus Royal Purple's proprietary, synthetic Synerlec® additive technology.
Synerlec® additive technology greatly reduces engine wear, including ring, cylinder and bearing wear. It is extremely tenacious, adheres to engine surfaces and remains after shutdown, which provides protection upon initial startup.
Multi-Grade Oils: 5W20, 5W30, 10W30, 10W40, 15W40, 20W50
Straight-Grade Oils: SAE 30, SAE 40, SAE 50
Royal Purple's motor oils are API certified and will not void new car warranties. Royal Purple® recommends waiting until the manufacturer's first scheduled oil change or a minimum of 2,000 miles in new gasoline engines before using Royal Purple®. Allow 8,000 to 10,000 miles before use in diesel engines.
Royal Purple® Motor Oils are compatible with other mineral and synthetic motor oils.
Environmentally Responsible: Royal Purple® Motor Oil extends oil drain intervals, eliminates premature oil changes, decreases the amount of oil purchased and disposed of and conserves energy.
Royal Purple's relentless pursuit of excellence within the lubricant industry consistently produces a reputation associated with quality and superior performance in both automotive and industrial markets.
Try Royal Purple® today and see why it truly is the performance oil that outperforms™.
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Customer Reviews - Include your order number for a chance to win a $100 GiftCard
Good at first
2/12/2017 9:02 AM
Been using Royal Purple products in everything we own for a few years now. Was completely satisfied until a couple weeks ago. Less than 500 miles on an oil change and the oil broke down and thinned out. Spun a bearing on the crank. Tearing the motor apart now to assess the damages.
I Have 2004 chevy Duramax with 285000 miles
7/30/2015 1:33 PM
I run royal purple lubricants in the truck since 12000 mile service. In Trans., Transfer Case, Front and rearaxles with no problems wouldn't use anything else
10/30/2010 8:29 AM
I first used Royal Purple in my 04 mustang and it made a world of diffrance. Now its the only oil i will use.
6/1/2009 12:15 AM
I HAVE USED THIS 15W40 IN MY 2004 DODGE WITH THE 24V 325/600 IT WORK VERY NICE OIL IS STILL CLEAN AT 5K AND I ALSO USE THE K&N OIL FILTER I ONLY HAVE 33K ON MY TRUCK BUT I WILL SEE WHAT WE GET IN THE LONG TIME USE I RUN THIS STUFF IN ALL MY TOYS
SEA RAY BOAT HONDA DIRT BIKE ZERO TURN MOWER SLED/4STROKE YAMAHA RHINO YAMAHA IF IT HAVE MOTOR OIL I RUN THIS STUFF AND HAVE FOR YEARS NEVER HAD ANY THING BUT GOOD LUCK A+ OIL READ THE WEB SITE AND LOOK AT THE TESTING