Gas
#2
RE: Gas
I believe it is more of a long term benefit to use the recommended octane levels. Keeping the fuel system clean is important for keeping performance and fuel economy at their best. I am afraid if I use poor quality gas, I will be forced to do a fuel injection service, replace the fuel filter, possible throttle body...just doesn't seem worth it to me. It's gucci gas for me I am afraid. You can always be our guinea pig...lol?
#3
RE: Gas
Cali boy
Something to think about.
If you buy gas at 3.00 and you get20.00 worth, You get 6.666 gals.
If you buy gas at 3.10 and you get 20.00 worth, You get 6.451 gals.
As you can see your only getting .215 gals lessby buying the higher price gas. The saving is only .645 cents between the two. Buy the higher Octane and take careof your car. Is 64 cents worth the price.
Guess you never thought of it this way.
Regards
.
Something to think about.
If you buy gas at 3.00 and you get20.00 worth, You get 6.666 gals.
If you buy gas at 3.10 and you get 20.00 worth, You get 6.451 gals.
As you can see your only getting .215 gals lessby buying the higher price gas. The saving is only .645 cents between the two. Buy the higher Octane and take careof your car. Is 64 cents worth the price.
Guess you never thought of it this way.
Regards
.
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#9
RE: Gas
I'm sorry, but if your car runs fine on lower octane, run the lower octane. Their are sooo many wives tales that go along with octane ratings so here is something to remeber:
1. If you run lower octane, and do not get pre-ignition, you will not gain ANY power by going with a higher octane.
2. Higher octane is NOT "cleaner". In fact, EPA regulates how clean gas has to be. And when you see advertised gasolines as being SOO much cleaner, you are usually paying for your gasoline to have water added to it.
It is quite interesting when people want to purchase higher octane fuel. If they knew the chemistry behind it, they would actually buy lower octane. Why is this? Because, simply put, the higher the octane rating, the slower the gas burns. In a simplified chemistry version, gas has basically octane and heptane. The number you see at the pump is the average percentage of octane. Funny thing is, octane burns slower.
1. If you run lower octane, and do not get pre-ignition, you will not gain ANY power by going with a higher octane.
2. Higher octane is NOT "cleaner". In fact, EPA regulates how clean gas has to be. And when you see advertised gasolines as being SOO much cleaner, you are usually paying for your gasoline to have water added to it.
It is quite interesting when people want to purchase higher octane fuel. If they knew the chemistry behind it, they would actually buy lower octane. Why is this? Because, simply put, the higher the octane rating, the slower the gas burns. In a simplified chemistry version, gas has basically octane and heptane. The number you see at the pump is the average percentage of octane. Funny thing is, octane burns slower.
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#13
RE: Gas
i only use 93 in my car, where i bought the car in Texas and coming back they had 91, and 92 octane as the highest levels avail at some stations. Even with that I noticed a performance and fuel economy diff. in favor of the 93 octane. My car has never had gas that contains ethenol in it either. Lately, ive had to turn around and leave many stations I normally go to but I refuse to put it in any of my cars.
#14
RE: Gas
I come from turbo cars where octane is so debated and capitalized upon. I personally like is a mild to cold climate (west coast) and use 89 in the winter. In the summer/spring/fall I use 92.
I use Chevron exclusively.
Remember Chevron higher octane gas is still the same gas at lower octane gas but with additives that make it burn slower. Very little difference in quality.
Bob's corner gas bar? Who knows where he buys his gas from. Chevron ONLY put Chevron in their tanks (in Canada at least) and you know what you are buying.
this is debated ad infinitum on line especially amongst motorcyclists and turbo owners. buy what you want. Spending money on expensive gas over the lifetime of a car or buying synthetic oil equates to a full engine replacement for some cars (price point varies).
Drive your car better (and maintain it) and cheap gas is the smallest variable. Filling your tank after the drive and parking it full in colder temps is THE BEST insurance against any fuel issue. Less chance for condensation on the tank.
I use Chevron exclusively.
Remember Chevron higher octane gas is still the same gas at lower octane gas but with additives that make it burn slower. Very little difference in quality.
Bob's corner gas bar? Who knows where he buys his gas from. Chevron ONLY put Chevron in their tanks (in Canada at least) and you know what you are buying.
this is debated ad infinitum on line especially amongst motorcyclists and turbo owners. buy what you want. Spending money on expensive gas over the lifetime of a car or buying synthetic oil equates to a full engine replacement for some cars (price point varies).
Drive your car better (and maintain it) and cheap gas is the smallest variable. Filling your tank after the drive and parking it full in colder temps is THE BEST insurance against any fuel issue. Less chance for condensation on the tank.
#15
RE: Gas
Added ethanol will cause a loss of mileage and marginal loss of performance. HOWEVER, living in California I have had to deal with added ethanol (every station has to add it here). After 2 engine builds, I support it. The first 350 I built ran it's entire- 85,000 mile- life on ethanol added gas before I replaced it with my current motor(nothing wrong with it when removed). I tore it down for a rebuild to sell it and was amazed by the condition. The valves, exhaust ports, quench area, andcombustion chambers looked brand new! Plus ethanol is even more slower burning than gas, raising the effectiveoctanerating. Thislets you raise the compression ration and run onpump gas. My new motor has a static compression ratio of 12.2:1 I wanted to run it on pump gas from the beginning of the build and thought I'd have to go with a custom cam to lower the DCR. However, with the added ethanol fuel, i dynoed and broke the motor in with no problems.
#16
RE: Gas
This debate always drives me nuts. Why would you use a lower rated octane gas for an engine not designed for it. Just because you can't physically hear engine knock doesn't mean detonation still isn't occurring. You can't tell unless you hook a monitor up to your car and check for it. All your timing tables are designed for higher octane gas. Yes, your knock sensors will compensate to some extent for crappy gas, but why make them. Also, higher octane gas goes not give your car more horse power. More octane makes the gas less combustible and and resistant to detonation allowing you run run a more aggressive timing table (which does allow for more horsepower if properly tuned). All-in-all, the higher octane gas make your engine run better.
For engines designed for lower octane gas then you're right...the higher octane is generally unnecessary and a waste of money. For engines like ours, you're just wrong. Spend the extra $5 per fill, take it easy on your engine and use what it's designed for...
Remember, if you can actually hear the knock then it's pretty bad...
For engines designed for lower octane gas then you're right...the higher octane is generally unnecessary and a waste of money. For engines like ours, you're just wrong. Spend the extra $5 per fill, take it easy on your engine and use what it's designed for...
Remember, if you can actually hear the knock then it's pretty bad...
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