Q: The Owners manual recommends 93 octane in the 2009 Nissan Murano. Is this necessary? What happens if I use 87 or 91?
A: You can use 91 and higher. Any lower octane would be bad. Most Nissan's have the same powerful V6 engines, which require premium gas. Nissan's V6 engines are known as the best V6 engines in the world known for their performance and durability. The Murano, Altima V6, 350z, and Nissan Maxima all require premium gas. Using 91 octane is still premium gas, so it should not damage the engine.