Unleaded fuels, cheap and nasty –> premium

[ShineParticipant 1696]

Hey MGTOW bros,

Just a random aside, I always put the best quality fuel in my vehicle, it’s a 2001 grey import from Japan but it has a turbo so I try to keep her running sweet.

Even with my old 4 banga 4wd I used to put decent fuel in.

Just wondering who is with me in the premium of premium fuel, I just throw in unleaded 98.

Alot of dudes will tell you that your wasting money and 95 is ok. Or the cheaper one, here in oz it’s e10 so it has 10% ethanol.

Obviously the pros of better fuel is cleaner engine and proposed better millage, but does it add up? For me with I enjoy driving, so a few bucks more at the pump doesn’t sway me from loading up with the good stuff. Just interested to know if the difference between 95/98 is splitting hairs or actual factual?

"Society is to blame" Denton

[Secret Agent MGTOWParticipant 22527]

Shine wrote:

Hey MGTOW bros,

Just a random aside, I always put the best quality fuel in my vehicle, it’s a 2001 grey import from Japan but it has a turbo so I try to keep her running sweet.

Even with my old 4 banga 4wd I used to put decent fuel in.

Just wondering who is with me in the premium of premium fuel, I just throw in unleaded 98.

Alot of dudes will tell you that your wasting money and 95 is ok. Or the cheaper one, here in oz it’s e10 so it has 10% ethanol.

Obviously the pros of better fuel is cleaner engine and proposed better millage, but does it add up? For me with I enjoy driving, so a few bucks more at the pump doesn’t sway me from loading up with the good stuff. Just interested to know if the difference between 95/95 is splitting hairs or actual factual?

Usually you go with the octane rated fuel the manufacturer recommends because the engine is designed to run properly with that fuel mix. Too low an octane and you may get problems, too high octane you are just wasting money.

Here is a good article about it.

https://oppositelock.kinja.com/the-real-impact-of-using-wrong-fuel-octane-1785829176

Women want everything, but want responsibility and accountability for nothing.

[ShineParticipant 1696]

Haha, not that I condone reckless driving, it costs too much $$

"Society is to blame" Denton

[IRuleMeParticipant]

Alot of dudes will tell you that your wasting money and 95 is ok. Or the cheaper one, here in oz it’s e10 so it has 10% ethanol.

Here in the States, unless you find an ethanol free gas station, EVERY grade has ethanol.

I haven’t ever really found there to be a difference in performance based on octane grades, but that said, I almost always keep my car tuned up with the appropriate additives at fillup. I run a complete fuel system additive every 4k miles, and octane booster, ethanol treatment, and injector treatment almost every fillup.

[IRuleMeParticipant]

Secret Agent MGTOW wrote:

Shin wrote:

Hey MGTOW bros,

Just a random aside, I always put the best quality fuel in my vehicle, it’s a 2001 grey import from Japan but it has a turbo so I try to keep her running sweet.

Even with my old 4 banga 4wd I used to put decent fuel in.

Just wondering who is with me in the premium of premium fuel, I just throw in unleaded 98.

Alot of dudes will tell you that your wasting money and 95 is ok. Or the cheaper one, here in oz it’s e10 so it has 10% ethanol.

Obviously the pros of better fuel is cleaner engine and proposed better millage, but does it add up? For me with I enjoy driving, so a few bucks more at the pump doesn’t sway me from loading up with the good stuff. Just interested to know if the difference between 95/95 is splitting hairs or actual factual?

Usually you go with the octane rated fuel the manufacturer recommends because the engine is designed to run properly with that fuel mix. Too low an octane and you may get problems, too high octane you are just wasting money.

Here is a good article about it.

https://oppositelock.kinja.com/the-real-impact-of-using-wrong-fuel-octane-1785829176

THIS

I’ve known people who had to run specific octane gas because other octane types caused problems with their car.

[ShineParticipant 1696]

Secret Agent MGTOW wrote:

Here is a good article about it.

https://oppositelock.kinja.com/the-real-impact-of-using-wrong-fuel-octane-1785829176%5B/quote%5D

Cheers SAM,

I will research thus article.

I tend to agree that some cars just don’t need the top notch fuel. My gutless old 4wd gained a little bit of go from 95.

Edit: Just noticed secret agent’s quote is breaking the html code, possibly due to a signature or something without a close or </etc>

"Society is to blame" Denton

[DocParticipant]

In my experience of running Subaru Imprezas non- STI models are mapped by manufacture for 95 ron while the STIs were mapped for 97ron.

If the car is mapped for the fuel you will get a few more BHP out of it. But even if the car is not mapped higher octane is a cleaner burn and easier on the engine.
I run my car on 99 Ron.

The object of life is not to be on the side of the majority, but to escape, finding oneself in the ranks of the insane. Marcus Aurelius

[AttonParticipant]

Obviously the pros of better fuel is cleaner engine and proposed better millage, but does it add up? For me with I enjoy driving, so a few bucks more at the pump doesn’t sway me from loading up with the good stuff. Just interested to know if the difference between 95/98 is splitting hairs or actual factual?

It’s a post 95 so it has electronic ignition and electronic fuel injection. So even using 91 provided the engine hasn’t be modded shouldn’t cause any problems.

https://en.wikipedia.org/wiki/Octane_rating#Examples
But I see it fit to explain octane since this clears this whole thing up. Below is chart of the 4 stroke cycle, suck, squeeze, bang, blow. This cycle is used on almost every single vehicle on the road be it diesel or otherwise.

The squeeze cycle is where octane matters, when you compress the air fuel mixture it heats up. If this heat grows to great the air fuel mixture can pre ignite under pressure. This is a problem since in order to get respectable efficiency out of an engine high compression is required. In the case of a turbo the boost can also increase the effective compression ratio greatly.

In English the harder you squeeze the mixture the more thermally efficient and more powerful the engine is. More power for less fuel this fact is what really separates a modern engine from an older one. This reality as well as your computer governs what fuel you are required to use. Unless an effort has been made on the part of manufacturer advance ignition timings. Then you will see no advantage at all with better fuel since the ignition timing won’t advance thus no additional power. Nor does the fuel change your compression ratio so there is one hell of a limit to premium fuel. Feel free to PM me for more info.

A MGTOW is a man who is not a woman's bitch!

[Bob1775Participant 164]

The only fuel I’ve found to be any good was vp racing fuel sold in a 5 gallon can.

[Anonymous 42]

Bob1775 wrote:

The only fuel I’ve found to be any good was vp racing fuel sold in a 5 gallon can.

I used to purchase VP red with good ole lead, for my 2 stroke sled!
Aviation fuel still has lead.

As for octane/heptane, compression and load determine what I use. Driving unloaded around town I use lower/mid grade fuel. On highway trips with a load I use premium. In my muscle car with high compression I can only use high test, or else it will diesel and run rough.

The higher the octane, the longer the burn and this is important pertaining to stroke and compression. the desired burn and expansion of gasses should match the stroke and compression on any given engine. Low compression releases the expanded gasses sooner and high compression later.

It’s the ignition of highly combustible shorter molecule heptane that makes an engine knock, high compression makes the heptane pre-ignite on the compression stroke before the spark plug and it’s timing can determine the proper time of ignition, and it can damage the engine in many ways.

The mileage I gain on the highway makes high test cheaper than low test from the efficiency of smooth burning fuel.

If it runs like s~~~, you must aquit!

Simply don’t go below the MFG recommendation for fuel octane and you’ll be okay.

Contaminated fuel is entirely something else, stay away from stations that sold you fuel that makes your performance noticeably less, even water freezing in the fuel system.

I looked up how-to get ethanol out of my fuel, but the octane loss to the gasoline itself was too great, resulting in no real gain.

Never burn leaded fuels in engines with catalytic converters, the lead melts and clogs the converter.

[Bob1775Participant 164]

Race gas and two smoke oil is one of my favorite smells.i would put some in jar just to open in winter.

[RusskyParticipant 13503]

I need a scented candle with a smell of a burnout

proud carrier of the 'why?' chromosome

[Author]

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