15w20 is slightly thicker thand 10w40, .... but neither oil is used that often any more due to 5w30 and 10W30 motor oils. Unless you have a product purchased in the past five years and the manufacturer specifically calls for it .... use the other two weights I have recommended
There is no difference between the term "motor ship" and the term "motor vessel." The two are commonly used interchangeably.
difference of motor and marine insurance
Both
The main difference between a motor tic and compulsion is that one is that a motor tic is involuntary and a compulsion is not. A compulsion is more of a learned or hereditary behavior.
no
http://en.wikipedia.org/wiki/Electric_motor
No difference in the engine. It is all in the trans and the rearend
about a year
$ 200.00
size of the motor
A motorcycle has a motor and no pedals
no a mile is 5280feet and that is that