I have used premium gas (93-95 octane on my expedition for 15 months now. Just recently I experienced 2 episodes of my car stopping with no electric power while driving. It re-started within a minute from sotpping as if nothing happened. Ford service says my I should use lower grade gas. I can't believe it!
2007-01-22 11:06:18 · 11 answers · asked by JimMYB 1 in Cars & Transportation ➔ Car Makes ➔ Ford
It doesn't affect the engine really at all in stopping of the engine etc... Running what Ford recommends will help the engine produce the most power it can (as the engine is designed to run on 87)
So basically you are wasting the money... Unless the manufacturer or a mechanic shop recommends a higher fuel to keep from blowing up the motor, use the least amount allowed by the manufacturer
The vehicle stopping could be a few things, but needs a mechanic shop to look at.. this is something gas won't fix
2007-01-22 15:31:01 · answer #1 · answered by gearbox 7 · 1⤊ 0⤋
Unless I'm missing something here, there is no way your problem is related to the grade of fuel you're running. The octane number of a fuel denotes the ignition temp, higher octane, higher ignition temp. Higher octane fuels are designed to combat premature detonation caused by high compression. The myth is that "premium" is a better fuel, when in fact often times undesirable fractions are added or aren't removed in order to raise the octane number. These fractions tend to burn with a "dirtier" flame, and cause minor deposit buildup. To answer your question, no, high octane fuel shouldn't hurt your engine, at least not pump gas (stay away from aviation fuel), but your catalytic converter will have to work harder (get hotter), you may cause carbon deposits in your combustion chambers and on your valves, and you may even dirty your engine oil more rapidly, though it's doubtful you'd notice. Stick with 87, save the money, unless you've done something to your engine to require elevated octane numbers, you're wasting your money and producing more carcinogens.
2007-01-23 02:20:26 · answer #2 · answered by Smitty 2 · 1⤊ 0⤋
i don't believe that gasoline was the problem it sounds electrical. on to your question about octane, octane is a rating that tells you how redily gasoline burns. the lower the number the easier fuel ignites. premium gas is for high compression engines. (sportscars) however i have not heard of lower compression engines being harmed by high octane gas. on that note the difference between 87 and 95 octane is not great, but i would recomend against aviation fuel which is 115 octane that would cause engine damage
2007-01-22 11:17:45 · answer #3 · answered by puffdaddy_1969 2 · 1⤊ 0⤋
Nope, not bad. Not really needed to use 95% octane. In Colorado regular unleaded gas is 85% and premium unleaded is 87% and all experts say do not get the premium gas, makes no difference in performance or mileage.
2007-01-22 11:14:53 · answer #4 · answered by $1,539,684,631,121 Clinton Debt 6 · 0⤊ 0⤋
Higher octane in your vehicle is neither good nor bad. It is just costing you more money. Studies have shown that there is no performance improvement using premium gas when the vehicle was not designed to use it. It certainly has nothing to do with the electrical power failing.
2007-01-22 11:28:40 · answer #5 · answered by cottagstan 5 · 1⤊ 0⤋
Depending on where you live you may be able to get away with it. Typically if the car requires 91 you can get away with 87 in the winter months, 89 spring and fall and 91 in the summer only. If you're trying to save money an SC300 probably isn't a real great choice though, I can't imagine insurance on one of those is cheap since it's a non turbo Supra with a lexus badge. Also checking your tire pressure regularly and keeping up on oil changes and other maintenance can save you far more in the long run on improved fuel economy.
2016-03-28 21:45:48 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I use low grade in my SUV and my husband who has an 06 corvette even uses low grade because I heard that high octane isnt good for your catalytic convertor and this came from the dealership when I purchased the car as well as in the owners manual. I think if you have a high performance engine it would do just fine though.
2007-01-22 11:13:26 · answer #7 · answered by **Damn its cold up here** 3 · 0⤊ 0⤋
No, the higher the octane the better the gas. I have heard that high octane isnt good for your catalytic convertor.... I use regular - 87 octane in my SUV's and they run fine.
2007-01-22 11:10:49 · answer #8 · answered by Anonymous · 0⤊ 0⤋
They are telling you that because that is exactly what is happening to your truck. I have actually never used high octane gas in any car I have ever owned. Unless you have a sports car, I think it is waste of money.
2007-01-22 11:14:34 · answer #9 · answered by ♥ Mary ♥ 4 · 0⤊ 0⤋
Jimmy, if it's a stock engine, then you're just wasting money. Your engine doesn't need it and you'll save a few bucks at every fill up. Your other problem is not associated with the gas. Have a dealer look at it.
2007-01-22 18:41:31 · answer #10 · answered by Fordman 7 · 1⤊ 0⤋