To be blunt about the subject, if a bottle of oil does not contain the following basic information then DO NOT buy it look for something that does! 1  The purpose for which it is intended (i.e. 2  Motor oil, Gear oil etc). 3  The viscosity (i.e. 10w-40, 5w-30 etc for Motor oils and 80w-90, 75w-90 etc for Gear oils).
The definition of an incursion is an invasion, or the act of entering into an activity or place. 1  An example of an incursion is a military brigade entering enemy territory. 2  An example of an incursion is taking an art class to get a little experience into painting.
Recursion in computer programming is exemplified when a function is defined in terms of simpler, often smaller versions of itself. The solution to the problem is then devised by combining the solutions obtained from the simpler versions of the problem.