1990 300zx can I use Unlead gas intead Premium??

[300zxcanyondrifter]

I want to use unleaded gas instead Premium, well because
the gas prices are crazy, I was wondering if it was alright if I use
Unleaded gas, has anyone done this ??

[CrazedZ32Owner]

is it a TT??... it better not be

and if not it'll just run like crap and youll probably get even worse gas mileage because itll cause the injectors to add more fuel to compensate for the lower octane rating of the fuel..... it says premium unleaded for a reason....

i'm trying not to be an a-hole but you bought a Z32 should have looked before hand... DD you're infinity if need be and only drive the Z on nice days maybe like 2-3 times a week.... i have to DD my TT..... not fun on the wallet but i manage

[300freekzx]

Hell no! Nuff said

[robomatic12]

is it a TT??... it better not be

and if not it'll just run like crap and youll probably get even worse gas mileage because itll cause the injectors to add more fuel to compensate for the lower octane rating of the fuel..... it says premium unleaded for a reason....

i'm trying not to be an a-hole but you bought a Z32 should have looked before hand... DD you're infinity if need be and only drive the Z on nice days maybe like 2-3 times a week.... i have to DD my TT..... not fun on the wallet but i manage

Wrong. The octane level has nothing to do with how much fuel the injectors spray, that is determined by the ecu. You won't get worse gas mileage from this.

Also almost all gasoline sold at street pumps is unleaded, does not matter what octane.

When you get to the pump you have the choices between different octane ratings, perhaps 87, 89, 91 or 93/94 depending on the availbility in your area. These cars require "premium", atleast 89 preferably 91 octane fuel, in order to combat detonation, as they have been designed with this fuel they can and will run on a lower octant but can trip the detonation sensor which will cause you to run poorly.

[CrazedZ32Owner]

well i got the end game right lol......it'll run like poo and crappy gas mileage

[Ace2cool]

Reference this thread:

regular-unleaded-in-350z-t525296.html

I'm not typing it all out again, lol.

[greendusk]

Reference this thread:

regular-unleaded-in-350z-t525296.html

I'm not typing it all out again, lol.

wow that helped alot

[300zxcanyondrifter]

is it a TT??... it better not be

and if not it'll just run like crap and youll probably get even worse gas mileage because itll cause the injectors to add more fuel to compensate for the lower octane rating of the fuel..... it says premium unleaded for a reason....

i'm trying not to be an a-hole but you bought a Z32 should have looked before hand... DD you're infinity if need be and only drive the Z on nice days maybe like 2-3 times a week.... i have to DD my TT..... not fun on the wallet but i manage

no its not a TT, my car is a NA
Im just going to sell my Z32, I dont even use it hehe.

[300zxcanyondrifter]

is it a TT??... it better not be

and if not it'll just run like crap and youll probably get even worse gas mileage because itll cause the injectors to add more fuel to compensate for the lower octane rating of the fuel..... it says premium unleaded for a reason....

i'm trying not to be an a-hole but you bought a Z32 should have looked before hand... DD you're infinity if need be and only drive the Z on nice days maybe like 2-3 times a week.... i have to DD my TT..... not fun on the wallet but i manage

Wrong. The octane level has nothing to do with how much fuel the injectors spray, that is determined by the ecu. You won't get worse gas mileage from this.

Also almost all gasoline sold at street pumps is unleaded, does not matter what octane.

When you get to the pump you have the choices between different octane ratings, perhaps 87, 89, 91 or 93/94 depending on the availbility in your area. These cars require "premium", atleast 89 preferably 91 octane fuel, in order to combat detonation, as they have been designed with this fuel they can and will run on a lower octant but can trip the detonation sensor which will cause you to run poorly.

I won't use Unleaded fuel just Premium. I decided Im going to sell my car
anyway, I dont even use it.

My uncle would always use Premium in his Escort
until one day his car didnt start no more, all
because he used Premium.

[A Paratroopers 300zx]

I won't use Unleaded fuel just Premium. I decided Im going to sell my car
anyway, I dont even use it.

My uncle would always use Premium in his Escort
until one day his car didnt start no more, all
because he used Premium.

Umm... not to be offensive in any way, but that doesn't make much sense at all. There are a ton of different reasons why a car won't start. Simply using 91/93/94 octane premium fuels will not cause a car to not start. Time diminishes all things on a vehicle. If the fuels contained a certain percentage of ethanol, like they all do now, that might be a cause for faulty injectors, which then lead to no starting. Can't really just blame the use of premium fuel on a car not working.

[a.p.barron]

The price difference isn't even that big. Check this out:

Our tanks are at about 19 gallons. When the fuel gauge hits E, we still have 5 gallons or so left, so when you fill up, you're going to put in about 14 gallons.

Right now, for me regular gas is $3.91 and premium is $4.19.

$4.19 - $3.91 = $0.28

14 gallons x $0.28 = $3.92

I fill up about once a week, so I pay about $15.68 extra a month or $188.16 a year to drive the Z. The joy I get from driving the car is worth a lot more than that.

If you have to commute to the point where you need to fill up every day, then it would probably make sense to get a little commuter car.