Nissan Z33-D owner manual Fuel, Aftermarket fuel additives, Octane rating tips

hibitors. If not properly formulated with appropriate cosolvents and corrosion inhibitors, such methanol blends may cause fuel system damage and/or ve- hicle performance problems. At this time, sufficient data is not available to ensure that all methanol blends are suitable for use in NISSAN vehicles.

If any undesirable driveability problems such as engine stalling and hard hot starting are experi- enced after using oxygenate-blend fuels, imme- diately change to a non-oxygenate fuel or a fuel with a low blend of MTBE.

Take care not to spill gasoline during refu- eling. Gasoline containing oxygenates can cause paint damage.

E-85 fuel

E-85 fuel is a mixture of approximately 85% fuel ethanol and 15% unleaded gasoline. E-85 can only be used in a Flexible Fuel Vehicle (FFV). Do not use E-85 fuel in your vehicle. U.S. govern- ment regulations require fuel ethanol dispensing pumps to be identified by a small, square, or- ange and black label with the common abbre- viation or the appropriate percentage for that region.

9-4Technical and consumer information

Aftermarket fuel additives

NISSAN does not recommend the use of any aftermarket fuel additives (for example, fuel in- jector cleaner, octane booster, intake valve de- posit removers, etc.) which are sold commer- cially. Many of these additives intended for gum, varnish or deposit removal may contain active solvents or similar ingredients that can be harm- ful to the fuel system and engine.

Octane rating tips

Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy spark knock. (Spark knock is a metallic rapping noise.) If se- vere, this can lead to engine damage. If you detect a persistent heavy spark knock even when using gasoline of the above stated octane rating, or if you hear steady spark knock while holding a steady speed on level roads, have your dealer correct the condition. Failure to correct the condition is misuse of the vehicle, for which NISSAN is not responsible.

Incorrect ignition timing will result in knocking, after-run or overheating. This in turn may cause excessive fuel consumption or damage to the engine. If any of the above symptoms are en- countered, have your vehicle checked at a

NISSAN dealer or other competent service fa- cility.

However, now and then you may notice light spark knock for a short time while accelerating or driving up hills. This is no cause for concern, because you get the greatest fuel benefit when there is light spark knock for a short time under heavy engine load.