Can a Lincoln Navigator run on Regular Unleaded Gasoline instead of Premium Gasoline? Is there a difference?

Question

Is Premium Unleaded (93) Gasoline a requirement, or an option? I would rather use Regular Unleaded (87) in the big gas hog. Would it hurt the engine or something? I don't see why I couldn't use Regular Unleaded? I am wanting to buy a Navigator, but if it has to be ran on Premium, I can't afford to use it. Please respond.

Answer 1

Excerpt from 2005 Lincoln Navigator owners manual (page 373):

"Octane recommendations
Your vehicle is designed to use
“Premium” unleaded gasoline with
an (R+M)/2 octane rating of 91 or
higher for optimum performance.
The use of gasolines with lower
octane ratings may degrade performance. The use of gasolines labeled as
“Premium” in high altitude areas that are sold with octane ratings of less
than 91 is not recommended.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your dealer or a qualified
service technician to prevent any engine damage."

Answer 2

None whatsoever. Unless your chugging up mountains or for some reason actually do experience knock, you're wasting your money on higher octane fuel. The premium gas is for two things, vehicles with high compression engines, your Navigator is not a Corvette, and to line to pockets of the oil companies, that's it. There are come vehicles out there that will suffer from low octane or cheap fuel, just ask any owner of a Nikasil powered Jaguar or BMW what cheap gas can do to an expensive car, but the low compression chuck of aluminum in the Navigator will live off regular or mid-grade with little or notice to the driver. As for timing issues, the computer controlled timing in modern cars is advanced and retarded for all kinds of reasons, not just load and knock, that's what the system is for, no harm there.

Answer 3

2007 Lincoln Aviator

Answer 4

Regular Fries

Answer 5

All gasoline, regardless of its’ octane rating, have pretty much the same amount of energy per gallon. What!!! "Sacrilege" you say? Well, actually, some higher-octane fuels have a few LESS percent energy per gallon…so as not to argue over this small point, for the sake of this discussion we will all agree that the automotive gasoline that you buy at the pump, regardless of octane rating, has the same amount of potential energy. Octane is NOT a measure of power but of the fuels’ resistance to ignition from heat. A higher-octane fuel, under identical combustion chamber conditions, will burn slower.

There is ABSOLUTELY NO BENEFIT to using a higher octane than your engine needs. The only benefit is increased profits to the oil companies that have cleverly convinced some of the public that their new "Super-Duper, Premium-High-Test, Clean-Burning, Used-By-Famous-Racing-Types-All-Around-The-World, Extra-Detergent-Laden-Keep-Your-Pipes-Clean, Extra-High-Octane" fuel is your engines’ best friend. The swami is telling you the truth, don’t listen to that talking cartoon car.

Answer 6

4% octant rating, clean out octane bost with cleaner about once a month, ad octane boost to it or white kesene to it another month down the line or
add unlead premiriun once evey fourth month..

Answer 7

It will run on any gas, BUT it's not a good idea. Contemporary cars can automatically adjust ignition timing depending on what gas you use. So, the car will adjust, but that's the point, you'll be driving it with ADJUSTED timing. Not a good thing.
Are you saying you can afford such an expensive car and cannot afford another 20 cents per gallon of gas?

Answer 8

Wow, thankyou! I was asking myself the same thing yesterday

Answer 9

all cars are made to run of plain ole regular unleaded just buy an octane booster every 3 fillups to keep the fuel injectors cleaned and you'll save allot more money

Answer 10

Every time I ask a question, even if its the easiest one, nobody can give me a proper informed answer on this website. wtf happened to people that actually make the effort to answer?