What fuel is recommended? Regular or unleaded?

Always use ethanol fuel in everything you can. If you can't find ethanol fuel then buy StarTron fuel additive and use that to help with the ethanol issues

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According to page 10-3 of the 2001 Nissan Maxima Owner's Manual:

FUEL RECOMMENDATION
Unleaded premium gasoline with an octane
rating of at least 91 AKI (Anti-Knock Index)
number (Research octane number 96)
If unleaded premium gasoline is not available,
unleaded regular gasoline with an
octane rating of at least 87 AKI (Research
octane number 91) can be used.
However, for maximum vehicle performance,
the use of unleaded premium gasoline
is recommended.

Engine "knock" is not just an unusual sound - but over time can cause real damage to the engine. You *should* use fuels with the recommended octane levels, but if you choose to use fuel with a lower octane level due to reduce fuel costs - do not repeatedly use fuel that causes engine knock. Find the "sweet spot" between the cost of lower octane fuel and an octane level that does not cause knocking. Expect fuel economy and performance to drop with lower octane fuels, too.

Good luck!

40:1 for chainsaw oil
Chainsaw should run fine on unleaded.

Hi!!
At the pump, when it says Regular, it means Regular Unleaded Gasoline, the one that says Super, is Super Unleaded Gasoline, the only difference between the two is the octane rating. Both will work just fine on your vehicle.
Good Day! Don't forget to rate this post!!

Your jeep has two engine options, one was a standard 4.7 V8 and the High Output V8. Below is the recommended octane fuel rating.
Unleaded regular, 87 octane (R + M)/2 - Standard;
Unleaded premium, 93 octane (R+M)/2 recommended - High Output
Thank you for using fixya and be safe.

87 OCTANE REGULAR UNLEADED.

dear friend-you must use unleaded as that is what you vehicle is desight for

when you open the gas flap to put gas in it should say "unleaded fuel only" or " premium unleaded fuel only". If it says premium only use premium. If it just says unleaded then you can use normal unleaded gas. But some stations have a lower grade unleaded gas. Use 88 octane or better.

Well, of course premium is HIGHLY recommended, but it is not necessary.
You can use regular grade in your engine and it will not harm it at all. Modern engine management systems have knock sensors that detect lower grade fuel and make the necessary adjustments to your timing and fuel delivery systems.
All you will notice is slightly slower acceleration and a slight drop in engine horsepower.

Hope this helps...

recommended is just that... a suggestion. most cars will run just fine on regular gas although you may notice a difference from using premium all the time. if you still have the owners manual it should tell you.

Robert