Do you want regular or premium?

J

Junkie

gone for now
This is all a bit hypothetical, since an industry-wide shift to 95 octane would require a fundamental retooling of engines going forward to account for higher compression ratios with which to fully realize any of the benefits of the higher-octane gas. But on a visceral level 95 octane is exciting, since it was fun that one time in high school when I put 94 octane gas in my Volvo 240 wagon and pretended that it had suddenly turned into a high-performance race car.
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what? it requires some changes, yes, but hardly a fundamental change.
 
afm199

afm199

Well-known member
Shit article. "Higher compression would require complete retooling" is total bullshit. They change heads and tooling every couple years.

I use 87 when I can get away with it, which is my trucks.

I'd love to have pump 95 so I can build my moto engines with higher compression. And I don't need to completely retool to do that, lol.
 
afm199

afm199

Well-known member
rodr said:
Octane rating is not a measure of quality.
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Indeed and totally true. Octane could be likened to adding sugar to something. It does nothing but retard knocking. There is no added power available in the gas, only if the motor is designed for higher compression does power ensue.
 
Reli

Reli

Well-known member
I have a 929RR that only requires regular. Premium isn't going to improve it. :dunno
 
Climber

Climber

Well-known member
afm199 said:
Shit article. "Higher compression would require complete retooling" is total bullshit. They change heads and tooling every couple years.

I use 87 when I can get away with it, which is my trucks.

I'd love to have pump 95 so I can build my moto engines with higher compression. And I don't need to completely retool to do that, lol.
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By cutting the sentence, you cut out the part that qualifies the statement.. :twofinger
This is all a bit hypothetical, since an industry-wide shift to 95 octane would require a fundamental retooling of engines going forward to account for higher compression ratios with which to fully realize any of the benefits of the higher-octane gas.
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Looking further down, I think that the manufacturers are more interested in high performance cars than higher gas mileage cars, even if they are currently hiliting the higher gas mileage in their push for higher octane gas.
 
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afm199

afm199

Well-known member
Climber said:
By cutting the sentence, you cut out the part that qualifies the statement.. :twofinger


Looking further down, I think that the manufacturers are more interested in high performance cars than higher gas mileage cars, even if they are currently hiliting the higher gas mileage in their push for higher octane gas.
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No, it doesn't. We all know that you have to retool or change machine process for higher compression. They make it out like it's a big deal. It's not. In some cases it simply means milling another 15 thou off the face of head, which is going to be milled 3 thou for a clean surface. They grossly exaggerated. And comp ratios have been going up for decades. The motors today run on gas that could not have been used thirty years ago.
 
Climber

Climber

Well-known member
afm199 said:
No, it doesn't. We all know that you have to retool or change machine process for higher compression. They make it out like it's a big deal. It's not. In some cases it simply means milling another 15 thou off the face of head, which is going to be milled 3 thou for a clean surface. They grossly exaggerated. And comp ratios have been going up for decades. The motors today run on gas that could not have been used thirty years ago.
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What's the typical cost for a garage to do that?
 
Eldritch

Eldritch

is insensitive
bojangle said:
First world problems. Well, not really a problem other than costing more at the pump.
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I don't know, I mean, don't nearly all cars with 180+ Horsepower and all bikes with 100+ Horsepower require that? I mean, that isn't even getting into serious powersports as a baseline.
 
AbsolutEnduser

AbsolutEnduser

Throttle Pusher
Eldritch said:
I don't know, I mean, don't nearly all cars with 180+ Horsepower ...require that?
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I don't think "all" cars , but maybe all that have lots of HP and smaller engines. I think some Import has figured out that for the US market they have to make at least one powerful car that still runs regular because hey... a $50,000 vehicle gotta have the cheaper gas at the pump :rolleyes

I think the push of the article was claiming more efficiency with better gas... not better smartness or saving money
 
msethhunter

msethhunter

Well-known member
If I don't run premium in my IS, it pings like a motherfoker! It's also brand specific. Sucks my balls every time I go to fill up. I look across the street at Arco with envy.
 
TheRobSJ

TheRobSJ

Großer Mechaniker
msethhunter said:
If I don't run premium in my IS, it pings like a motherfoker! It's also brand specific. Sucks my balls every time I go to fill up. I look across the street at Arco with envy.
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I’ve tried a few times with Shell’s 91 in my Corvettes in the past. Different stations. Ping bonanza no matter what. Chevron or 76 no matter what. So ingrained at this point, I even put it in rental cars.
 
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