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Fuel information
You must only use unleaded gasoline in your vehicle.
NX350: Select premium unleaded gasoline with an octane rating of 91 (Research
Octane Number 96) or higher required for optimum engine performance and fuel
economy. If the octane rating is less than 91, damage to the engine may occur and
may void the vehicle warranty.
NX250: Select octane rating of 87 (Research Octane Number 91) or higher. Use
of unleaded gasoline with an octane rating lower than 87 may result in engine
knocking. Persistent knocking can lead to engine damage.
At minimum, the gasoline you use should meet the specifications of ASTM D4814
in the U.S.A.
INFORMATION
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Gasoline quality
In very few cases, driveability problems may be caused by the brand of gasoline you are
using. If driveability problems persist, try changing the brand of gasoline. If this does not
correct the problem, consult your Lexus dealer.
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Recommendation of the use of gasoline containing detergent additives
Lexus recommends the use of gasoline that contains detergent additives to avoid the
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build-up of engine deposits.
All gasoline sold in the U.S.A. contains minimum detergent additives to clean and/or
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keep clean intake systems, per EPA's lowest additives concentration program.
Lexus strongly recommends the use of Top Tier Detergent Gasoline. For more infor-
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mation on Top Tier Detergent Gasoline and a list of marketers, please go to the official
website www.toptiergas.com.
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Recommendation of the use of low emissions gasoline
Gasolines containing oxygenates such as ethers and ethanol, as well as reformulated
gasolines, are available in some cities. These fuels are typically acceptable for use,
providing they meet other fuel requirements.
Lexus recommends these fuels, since the formulations allow for reduced vehicle emis-
sions.
10-1. Specifications
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