MBLE ENGINEER 



or 01 ts a lubi Some of the poorest 



^h flash test, good vise 



umber of other good qualities supposed to be 



possessed l>\ 11 as a lubricant they are 



ing at all. Probably no class of people 



arc imposed upon in the matter of oils more than the 



thre- 1 no class of engineers have been de- 



more consistently ;m<l continuously than they. 



Perhaps it is not exaggerating conditions to state that half 



!er oil used in traction engines is worthiest. 



It Ins a high flash test because of the fact that it contains a 



large amount of tarry matter. It has considerable viscos- 



>r the same reason, but as a lubricant it has very little 



value. \ >rn pistons and many of the ac- 



.ts which occur in the cylinders of steam engines 



and frequently the lack of power of the engine may be 



traceable directly to these inferior oils, which are sold 



through local dealers all over the country at a very good 



prices. The statement has been made time and again 



the engineer should, when he finds a good grade 



of oil. stick to it. This is good advice. The only diffi- 



to find the good grade, but when found it is 



!> at almost any price. A good cylinder oil should 



be clear and not too heavy. Ordinarily it will not have 



ish fire test or flash test, as a high flash t< 

 an indication of an impure oil when r steam pur- 



poses. Good cylinder oil moreover, should not contain 



