Royal Purple’s API-licensed Motor Oil combines premium base oils with proprietary additive technologies to create high performance motor oils that optimize engine performance. Royal Purple’s API-licensed motor oil delivers superior protection and improves performance in gasoline and diesel engines. Royal Purple’s API-licensed SN motor oil meets ILSAC GF-5 and Dexos1™ performance requirements. 1 quart NOTE: Oil is classified as hazardous cargo and currently may ONLY be shipped via GROUND. We cannot ship it to our international customers at the moment Royal Purple’s API-licensed Motor Oil combines premium base oils with proprietary additive technologies to create high performance motor oils that optimize engine performance. Royal Purple’s API-licensed motor oil delivers superior protection and improves performance in gasoline and diesel engines. Royal Purple’s API-licensed SN motor oil meets ILSAC GF-5 and Dexos1™ performance requirements.

No special procedures are necessary when upgrading to Royal Purple. Royal Purple recommends waiting until the manufacturer’s first scheduled oil change in new gasoline and diesel engines before upgrading to Royal Purple.

Royal Purple motor oil is compatible with synthetic and conventional motor oils.

BETTER WEAR PROTECTION

Enhanced additive technology prevents metal-to-metal contact beyond both dexos1™* and ILSAC GF-5 specs

INCREASED FUEL EFFICIENCY

A low coefficient of friction results in optimized fuel efficiency (the fuel economy of our 5W-30 meets the fuel economy requirements of a 5W-20 oil)

BETTER PROTECTION OF THE EXPENSIVE CATALYTIC EMISSION SYSTEM

Patented ZDDP additives optimize emissions catalyst system life

IMPROVED COMPATIBILITY WITH FUELS CONTAINING ETHANOL

Patented additive technology prevents the white sludge and lubrication starvation that can occur with 20% or higher ethanol fuel

SUPERIOR CORROSION PROTECTION

No rust observed in standard industry testing

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2015 STI Oil Capacity

4.5 quarts if changing the oil and oil filter
4.2 quarts if changing oil only

2015 WRX Oil Capacity

5.4 quarts if changing oil and oil filter
5.2 quarts if changing oil only