Universal Life is a type of permanent life insurance based on a cash value. That is, the policy is established with the insurer where premium payments above the cost of insurance are credited to the cash value. The cash value is credited each month with interest, and the policy is debited each month by a cost of insurance charge, and any other policy charges and fees which are drawn from the cash value if no premium payment is made that month. The interest credited to the account is determined by the insurer; sometimes it is pegged to a financial index such as a bond or other interest rate index. The potential advantage of the universal life policy is in its flexibility and the potential for greater cash value growth if the interest rates offered outperform the insurer's general account (that whole life policy cash value growth is based on). Universal life is more flexible than whole life in two primary ways: the death benefit and usually the premium payment are flexible.

Gasoline Engines

Gasoline engines have the advantage over diesel in being lighter and able to work at higher rotational speeds and they are the usual choice for fitting in high-performance sports cars. Continuous development of gasoline engines for over a hundred years has produced improvements in efficiency and reduced pollution. The carburetor was used on nearly all road car engines until the 1980s but it was long realized better control of the fuel/air mixture could be achieved with fuel injection. Indirect fuel injection was first used in aircraft engines from 1909, in racing car engines from the 1930s, and road cars from the late 1950s.

Gasoline Direct Injection (GDI) is now starting to appear in production vehicles such as the 2007 BMW MINI. Exhaust gases are also cleaned up by fitting a catalytic converter into the exhaust system. Clean air legislation in many of the car industries most important markets has made both catalysts and fuel injection virtually universal fittings. Most modern gasoline engines are also capable of running with up to 15% ethanol mixed into the gasoline - older vehicles may have seals and hoses that can be harmed by ethanol. With a small amount of redesign, gasoline-powered vehicles can run on ethanol concentrations as high as 85%. 100% ethanol is used in some parts of the world (such as Brazil), but vehicles must be started on pure gasoline and switched over to ethanol once the engine is running. Most gasoline engines cars can also run on LPG with the addition of an LPG tank for fuel storage and carburetion modifications to add an LPG mixer. LPG produces fewer toxic emissions and is a popular fuel for fork lift trucks that have to operate inside buildings.