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A Question of Fuel Economy

CSVTnewbie said:
The Zetec will get better MPG because it is a 4 cylinder (2.0 I4). The Duratec gets worse mileage because it is a bigger engine (2.5 V6). My Titan is a 5.6 V8, it gets even worse mileage because it is a bigger engine.
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You way over-simplified that. Size is only part of the economy puzzle.
 
Dyoel182 said:
You way over-simplified that. Size is only part of the economy puzzle.
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Dyoel, you said that waaaay nicer than I would have. One thing I wonder about is the manual vs auto tranny. Will the manual always win out against the auto as long as you keep the driving 'normal' and not rodding on it?
 
loggerbomb said:
Dyoel, you said that waaaay nicer than I would have. One thing I wonder about is the manual vs auto tranny. Will the manual always win out against the auto as long as you keep the driving 'nomral' and not rodding on it?
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It depends on the vehicle, but most vehicles are better on gas when equipped with MTX...
 
The only reason some ATX cars show better mileage is because they tweak the gear ratios to do so. In testing the MTX car will usually show better mileage anyway.
 
Ok newb. :rolleyes: :rolleyes: :rolleyes:

EDIT: I should mention that my grandfather's truck with a 402 CI (6.6L) V8 gets better mileage than my 293 CI (4.8L) V8 did, which got better mileage than the 262 CI (4.3L) V6 model. My V8 truck got better mileage than my friend's 3L Contour. I think I've proven my point. Size isn't :censored::censored::censored::censored:.
 
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TX00SVT said:
Ok newb.

EDIT: I should mention that my grandfather's truck with a 402 CI (6.6L) V8 gets better mileage than my 293 CI (4.8L) V8 did, which got better mileage than the 262 CI (4.3L) V6 model. My V8 truck got better mileage than my friend's 3L Contour. I think I've proven my point. Size isn't
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I'm pretty sure, they didn't have cats, or any other emissions bull sh*t. Also they probably ran on leaded gas, instead of the :censored::censored::censored::censored:ing sh*t gas we have now.

:rolleyes::rolleyes::rolleyes::shrug::rolleyes::rolleyes::rolleyes:
 
Dyoel182 said:
And what does that have to do with anything?
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Think of your engine as a pump. It sucks air in and pumps it out as exhaust. Newer cars have restrictions in the intake and mainly in the exhaust called catalytic converters, mufflers, EGR, intake noise canceling, etc. If you take out those restrictions, the engine can breathe better allowing for more power and better gas mileage. And leaded gas is like race gas or aviation gas, which means it has more octane. Some cars will get more power/better mileage with higher octane gas.
 
CSVTnewbie said:
Think of your engine as a pump. It sucks air in and pumps it out as exhaust. Newer cars have restrictions in the intake and mainly in the exhaust called catalytic converters, mufflers, EGR, intake noise canceling, etc. If you take out those restrictions, the engine can breathe better allowing for more power and better gas mileage. And leaded gas is like race gas or aviation gas, which means it has more octane. Some cars will get more power/better mileage with higher octane gas.
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You're oversimplifying again. And yes some cars make more power and get better gas mileage with higher octane gas but that's because they're tuned that way.
 
CSVTnewbie said:
I'm pretty sure, they didn't have cats, or any other emissions bull sh*t. Also they probably ran on leaded gas, instead of the :censored::censored::censored::censored:ing sh*t gas we have now.
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Wrong again. I'm comparing a 2003 Silverado 2500 HD Crew cab to a 2003 Silverado V8 SBRC to another 2003 Silverado V6 SBRC. All were completely stock at the time. Please don't try to give me a lesson on how engines work. I'm a mechanical engineer about to graduate from the school that was once the General Motors Institute... :rolleyes:
 
TX00SVT said:
Wrong again. I'm comparing a 2003 Silverado 2500 HD Crew cab to a 2003 Silverado V8 SBRC to another 2003 Silverado V6 SBRC. All were completely stock at the time. Please don't try to give me a lesson on how engines work. I'm a mechanical engineer about to graduate from the school that was once the General Motors Institute... :rolleyes:
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So you're comparing a diesel engine to gas engine? Duh, diesels are more efficient. You'd think a mechanical engineer would know that... :shrug::shrug:

Also that diesel probably didn't even come with a cat... :shrug::shrug:
 
You didn't say anything about fuel type. Only "SIZE is EVERYTHING," so fuel type shouldn't matter according to your theory.
 
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