2.  Q. How warm should the oil be at all times in the tank.

A. Warm enough to flow freely at all times, usually about 112 degrees.  This temperature is about that which the hand can bear on the outside of the tank.

3.  Q. If the oil is too warm, what happens?

A. Many of the good qualities of the oil may be lost by keeping it too warm, and the burner is more difficult to operate and does not work as well when the oil is kept at too high a temperature.  Should the oil be too warm, it will give off too much gas which would be liable to cause an explosion in the oil tank.

4.  Q. What tools are necessary for firing purposes on an oil burning locomotive?

A. The tools necessary for firing an oil burning engine include sand horn, brick hook, and a small iron bar to be used in cleaning carbon from the mouth of the burner.

5.  Q. What is liable to happen if the heater valve is open too much?

A. If the heater valve is opened too much it would be liable to burst the heater hose as well as to heat the oil to a too high temperature and place an unnecessary strain on all the heater connections, causing them to leak.

6.  Q. What should be done on approaching stations where additional supply of fuel oil is to be taken?

A. Shut off the fire, close safety and main oil valves, remove any lamps that are so close as to be unsafe when manhole cover is open.

7.  Q. What care must be exercised in the use of lamps, torches or lanterns about oil tanks whether hot or cold?

A. Never permit oil lamps or oil torches to be carried within ten feet of the tank opening.  Only incandescent lamps or pocket flash lights should be used around oil tank manhole when taking oil.

8.  Q. How can oil in the tank be measured without taking a light to the manhole?

A. By inserting a measuring stick into oil in tank and taking stick to the light for reading.

9.  Q. What precautions must be taken before entering tanks that have been used for oil to clean or make repairs?

A. Oil tanks, before being entered by workmen, should be thoroughly steamed and cooled before being entered.  For safety they should be steamed from six to eight hours.

10.  Q. How should the fire be lighted in an oil burning locomotive?

A. First see that no one is working under the engine, that there is the proper amount of water in the boiler and that it will flow through the gauge cocks, that there is no accumulation of oil in the ash-pan or fire-box or existing leaks throughout.  If there is no steam in the boiler, the steam connections can be made to the three-way cock at the smoke-arch that will answer for blower and atomizer.  If there are twenty pounds of steam in the boiler, it can be operated with its own blower.  If oil in the tank is too cold to flow into the burner readily, it must be heated.  Open the front damper and put on the