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Frequently Asked Questions

Can I mix different octane fuel grades?

You should not allow the tank to become empty, and then add 50% of lower octane, followed by 50% of higher octane. The fuels may not completely mix immediately, especially if there is a density difference. You may get a slug of low octane that causes severe knock. You should refill when your tank is half full. In general the octane response will be linear for most hydrocarbon and oxygenated fuels e.g. 50:50 of 91 and 95 will give 93.

What octane fuel should I use?

Powered Paragliding (PPG) - WikiFAQ - Answers to Frequently ...
There are a lot of misconceptions about fuel octane. Octane rating indicates one thing: resistance to detonation. Higher octane fuel does NOT run "cooler", and vice versa, provided the fuel has a high enough octane to prevent detonation ("pinging"), which is when the fuel ignites before the spark plug fires (this can and will cause an engine to run inefficiently and thus hot, but is extremely hard on the engine in other ways). This should not be an issue in a properly tuned paramotor engine.

Can I mix different kinds of cichlids?

Frequently Asked Cichlid Questions
Cichlid-only community tanks-- usually with non-cichlid scavengers-- are very common in the cichlid hobby. Experienced cichlid keepers often find unlikely combinations of cichlids which work well by chance (e.g. a shortage of tank space, or a fish jumping into another tank). Aquarists will commonly attempt to group fish of similar geographical origin, e.g.

What is my fuel mix ... ?

Seagull FAQ
There are three possible answers here. Please note that you MUST use the correct fuel mix for your motor or you will ruin it. The fuel mix MUST be fresh. As a rule of thumb a seagull can use more but not less oil. Most British Seagulls use this ratio. If you have a pre 1979 engine, the fuel mix will be 10:1 UNLESS it was converted to run on 25:1. Newer 1979 and newer seagulls with black thumb lever throttles and black carb bodies use the 25:1 mix.

Do I have to use high octane or can I use low octane fuel?

Fuel Energizer - Save Upto 28% Off Your Fuel Bills
Some manufacturers recommend high octane fuel, whereas other vehicles can run on either. The Fuel Energizer works with all fuel types, but if you want to use a lower octane fuel to save even more money, we suggest you complete the "Settling In" period and ensure you have followed the "Golden Seven Steps Rule" before you start using lower octane fuel.

What happens if I use the wrong octane fuel?

If you use a fuel with an octane rating below the requirement of the engine, the management system may move the engine settings into an area of less efficient combustion, resulting in reduced power and reduced fuel economy. You will be losing both money and driveability. If you use a fuel with an octane rating higher than what the engine can use, you are just wasting money by paying for octane that you can not utilize.

Can I tune the engine to use another octane fuel?

In general, modern engine management systems will compensate for fuel octane, and once you have satisfied the optimum octane requirement, you are at the optimum overall performance area of the engine map. Tuning changes to obtain more power will probably adversely affect both fuel economy and emissions. Unless you have access to good diagnostic equipment that can ensure regulatory limits are complied with, it is likely that adjustments may be regarded as illegal tampering by local authorities.

What octane fuel should I use when I have an XEDE installed?

XEDE
The easy answer is the highest octane you can get in your particular area. If the vehicle is custom tuned on the dyno, then whatever fuel was in the tank should be the minimum quality you will use. Example: If the vehicle was tuned on 95ron fuel then it is no problem to use 98ron fuel but it is not recommended that you use 91ron.

Will higher octane fuel give me better fuel economy?

The possibility then to get more power out of a "premium" gas is very low. The higher price is not worth it. Fuel consumption is determined by a number of factors: low-pressured tires, wind factor, outside temperature, remote starters, and most of all wild accelerations! Also a lot of people believe that gassing up with "premium" will give them more mileage per fuelling: "Gasoline with higher heating values give better fuel economy than those with lower heating values.

Is oil mixed with fuel? What type of fuel and octane rating?

AliSport
Oil must be pre-mixed with the fuel. We recommend CastrolTM TTS two-stroke oil (available worldwide). The engine's Electronic Control Unit (ECU) is programmed for Europe and North America to accommodate slightly different octane ratings. We recommend using the highest octane alcohol-free unleaded auto-fuel that is available. This is generally 98 RON (Research Octane Number) in Europe and 93 PON (Pump Octane Number) in North America (except California which is 92).

How do I mix Viscon in my fuel?

USA Lubrications - GTA Fuel Enhancements - Frequently Asked ...
the pump, pour a bottle of Viscon into your tank before filling up. The mixing action of fuel pouring into your tank will adequately blend Viscon with your fuel. If you are driving a fuel injected car, the re-circulation pump will continue to mix the additive with your fuel. Once mixed, Viscon will stay suspended in your fuel indefinitely. Not even freezing the fuel, which requires extremely low temperatures, will cause the active ingredients of Viscon to settle out.

How well does Acetone mix with fuel?

Directory:Acetone Additive:FAQ - PESWiki
Very well. Acetone has a 100% solubility rate, even in water, so the mixture formed with gasoline is complete. (This comment is being investigated) "If there is water (even small amounts from condensation) in the fuel and the engine is fuel injected, especially diesel engines, the acetone will form an emulsion with the water and corrode injector pump and damage injector tips, according to GM and various fuel injector manufacturers. Check with your vehicle manufacturer before using."

Can I mix different brands of VLCD products?

FAQ Medifast diet
We recommend that you stay with only one brand of products such as Medifast. Each product line is developed to maximize the nutrient levels your body requires. Mixing different product brands may cause you to be deficient in some nutrient. During the first week or so on the program, some people experience diarrhea from the body's adjustment to the concentration of nutrients in the supplements. This will usually subside after a few days.

How does Cylinder Pressure relate to the octane rating of today's unleaded fuel?

CraneCams
In very basic terms, the more cylinder pressure we make the more power the engine will produce. But look out for the fuel! Today's pump gas is too volatile and cannot tolerate high compression ratio (above 10.5:1) and high cylinder pressure (above approximately 165 PSI) without risking detonation. Fuel octane boosters or expensive racing gasoline will be necessary if too much cylinder pressure is generated.

Will I get better performance from my car if I use a higher octane fuel like ULG-95?

Are you tempted to buy a high octane gasoline for your car because you want to improve its performance? If so, Take note that if the recommended gasoline for your car is 91octane, then using a higher gasoline offers absolutely no benefit. It won't make your car perform better, go faster, get better mileage or run cleaner. Your best bet: Listen to your owner's manual.

Can 93 octane fuel be used for street type nitrous oxide applications?

Nitrous Kit FAQ
Yes. Many CFS systems are designed for use with pump gas. However, when higher compression or higher horsepower levels are used, a racing fuel of 100 octane, or more, must be used.

I have flat-top pistons, do I need higher octane fuel?

Frequently Asked Questions
Flat-top pistons mean very little. Most flat-top pistons are merely marketing ploys. A lot of people think they have something when they say "I put in flat-top pistons, man, and it made a huge difference!". Wrong. Most of the typical 4 relief flat-tops out there are ground with a different pin height, or compression height, as it is sometimes referred to. They actually sit down in the bore about .020 further than the factory dish piston.
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