Genesis 5.0 fuel choice?

[dxtra196]

I see no good purpose in high octane gas, a gimmick to get unnecessary money out of you. Don't fall for it

 

[LandoAWD]

I see no good purpose in high octane gas, a gimmick to get unnecessary money out of you. Don't fall for it

Yeah, preignition, detonation, knock thresholds...all myths.
Thanks, Obama.

 

[dxtra196]

Yeah, preignition, detonation, knock thresholds...all myths.
Thanks, Obama.

I highly doubt modern computerize engine will have a problem with knocking. Performance boost and a cleaner engine that's all a myth. Your car won't run any faster by wasting your money in higher grade gas. But go ahead a treat your engine lol

 

[LandoAWD]

I highly doubt modern computerize engine will have a problem with knocking. Performance boost and a cleaner engine that's all a myth. Your car won't run any faster by wasting your money in higher grade gas. But go ahead a treat your engine lol

You are so wrong, it's painful.
I got you a present: http://lmgtfy.com/?q=what+is+octane

 

[dxtra196]

You are so wrong, it's painful.
I got you a present: http://lmgtfy.com/?q=what+is+octane

"Octane rating or octane number is a standard measure of the performance of an engine or aviation fuel. The higher the octane number, the more compression the fuel can withstand before detonating (igniting)". 87-91 The number are so far apart that I'm convinced, I will pay .40 more a gallon for it. Follow your owners manual unless you have premature combustion.

 

[LandoAWD]

Cool. Peek inside a V8 owner's manual, or read the thread, and guess what it says?
I'll wait.

Meanwhile, you aren't changing physics with belief in your piggy-bank.

 

[dxtra196]

Cool. Peek inside a V8 owner's manual, or read the thread, and guess what it says?
I'll wait.

Meanwhile, you aren't changing physics with belief in your piggy-bank.

I'll keep my money, why would you make oil companies any richer? BTW your only loosing 7 horse power if I remember correctly

 

[LandoAWD]

I'll keep my money, why would you make oil companies any richer? BTW your only loosing 7 horse power if I remember correctly

You CAN keep your money...you have a V6. Ratings were done on watergas. That should make you burst with joy!

The fact is, you said:

I see no good purpose in high octane gas, a gimmick to get unnecessary money out of you. Don't fall for it

This statement is 100% wrong. It is factually incorrect, down to the chemical level.

 

[MikeyTG]

No need for a flame war. The V8's specs give data for both fuel blends. Use what you prefer.

 

[Huddleston]

dxtra196, are you saying that there is no real correlation between the performance of an engine and the level of octane rating?

Is this with respect to your Genesis? it seems you are making the statement about the difference on octane level as a blanket statement....

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[Mark_888]

Follow your owners manual unless you have premature combustion.

Did you read the owner's manual? The Genesis owner's manual recommends premium for the V8 to achieve maximum performance (about 7 HP more). Premium was used by Hyundai for the EPA fuel mileage testing on the V8.

 

[Alwaysforward]

I have a 5.0 and did quite an extension testing since I bought my car. I now only burn Mobil Super Unleaded full.

Here is a link to my post. Rather long but a good read:

http://genesisowners.com/hyundai-genesis-forum/showthread.php?t=15087

 

[dxtra196]

You CAN keep your money...you have a V6. Ratings were done on watergas. That should make you burst with joy!

The fact is, you said:


This statement is 100% wrong. It is factually incorrect, down to the chemical level.

Your right using higher octane gas is the way to go

 

[Nikgen]

Did you read the owner's manual? The Genesis owner's manual recommends premium for the V8 to achieve maximum performance (about 7 HP more). Premium was used by Hyundai for the EPA fuel mileage testing on the V8.

So, the question is if 7 hp is worth the upcharge for Premium (if money is a concern, of course). Hard to imagine that 7 hp is at all noticeable when you are starting with 420 hp?

 

[srobak]

Your car won't run any faster by wasting your money in higher grade gas. But go ahead a treat your engine lol

You're gonna want to go back and read my previous post to this thread.

 

[Mark_888]

So, the question is if 7 hp is worth the upcharge for Premium (if money is a concern, of coourse). Hard to imagine that 7 hp is at all noticeable when you are starting with 420 hp?

7 HP and better fuel mileage. I don't know if the price difference of premium is worth it (I don't even have a V8), but I just don't like when people report incorrect information. Much of the information on this subject is based on obsolete myths from back in the days when engines were only designed to run a single grade of gas, and did not benefit at all from a higher octane.

 

[Nikgen]

7 HP and better fuel mileage. I don't know if the price difference of premium is worth it (I don't even have a V8), but I just don't like when people report incorrect information. Much of the information on this subject is based on obsolete myths from back in the days when engines were only designed to run a single grade of gas, and did not benefit at all from a higher octane.

I doubt the mpg improvement would cover the cost of running premium (~$0.50+/gallon in most places). So, I think it's more about getting everything you paid for out the 5.0. Obviously a personal decision - but I find it hard to believe that anyone would notice an extra 7hp?

 

[Doc W]

I doubt the mpg improvement would cover the cost of running premium (~$0.50+/gallon in most places). So, I think it's more about getting everything you paid for out the 5.0. Obviously a personal decision - but I find it hard to believe that anyone would notice an extra 7hp?

I look at this issue a little differently, and based upon my (possibly distorted) reasoning I run premium in my 5.0L. Here's my take on things:

Modern engines are typically equipped with knock sensors, and the engine computer retards the timing if it detects detonation - regular unleaded can therefore be burned at only a very small sacrifice in performance. Here in Arizona we often have very high temperatures, and steep grades are very common in our many mountains. . . these are conditions that can lead to detonation when burning low-octane fuel. So to my way of thinking knocking has to occur before the ECU retards timing, and this certainly is not a good thing for any engine, even though the harsh condition might only be momentary before the timing adjustment kicks in.

I therefore would rather not ask for trouble, and I follow the manufacturer's recommendation to burn premium fuel. And here in AZ the premium is typically priced about 30 cents higher than regular.

Pretty cheap insurance IMHO, and I know I'm getting maximum performance and MPG for a few bucks more per tankful.

Just my $0.02,

Doc

 

[Mark_888]

I doubt the mpg improvement would cover the cost of running premium (~$0.50+/gallon in most places). So, I think it's more about getting everything you paid for out the 5.0. Obviously a personal decision - but I find it hard to believe that anyone would notice an extra 7hp?

I made the statement that premium used in the V8 results in better MPG than using regular gas. I made no statements about the calculation of a purely economic evaluation. Even if it makes no sense economically to use premium (which I don't know one way or the other) it is wrong to say the V8 gets the same MPG with either fuel (regular or premium).

 

[Nikgen]

I look at this issue a little differently, and based upon my (possibly distorted) reasoning I run premium in my 5.0L. Here's my take on things:

Modern engines are typically equipped with knock sensors, and the engine computer retards the timing if it detects detonation - regular unleaded can therefore be burned at only a very small sacrifice in performance. Here in Arizona we often have very high temperatures, and steep grades are very common in our many mountains. . . these are conditions that can lead to detonation when burning low-octane fuel. So to my way of thinking knocking has to occur before the ECU retards timing, and this certainly is not a good thing for any engine, even though the harsh condition might only be momentary before the timing adjustment kicks in.

I therefore would rather not ask for trouble, and I follow the manufacturer's recommendation to burn premium fuel. And here in AZ the premium is typically priced about 30 cents higher than regular.

Pretty cheap insurance IMHO, and I know I'm getting maximum performance and MPG for a few bucks more per tankful.

Just my $0.02,

Doc

Fair enough and makes sense. I'd might run premium too gad I gone for the 5.0 , but I wanted AWD so have the V6, where I have not seen any similar claims on it being designed to run optimally on Premium.