The Birmingham age-herald., 1922-05-10

I. 'T have been told that oildag would have important effect on the piston rings of my automobile engine. Is it so? ?. 'I am or less ignorant regarding piston rings and their purpose. Where are they placed in the engine?"
 "In grooves encirclng the pistons' 3. What part do they play in the operation of the ergine?"
 They close the and the cylinder walls thereby preventing the gases from the explosions in which would result in loss of power They pre- rings into the combustion ehsmber where it would burned and carbon set free producing carbon deposits {. ''If they produce these results they are evil dentiy very necessary to the proper working of the engine, are they not?"
 Yes they certainly are"
 B. "I am having a lot of trouble with my en- zine. The old joy of riding is pretty nearly thing of the past. Do you think these piston rings the cause?"
 Yes, it is possible What troubles ezpere'cins1 G. Shutting of the spark plugs, smoke from the exhaust, and the engine doesn't develop snything like the power it used to-" "Thsc clearly that your piston rings not free to act they should T. What prevents them from acting ss the manufacturer intended they should?" "The trouble Is probably wholly due burn ieast paav bnna n m it hu. v ins fee 10. of carbon the from acting freely Other portions of the freed deposits and smoke in the exhaust"
 8. Then thc piston rings ought to have pre- vented all these diffculties?"
 closing the spaces between the pistcn cylinder walls The They have slightly sRnsy ,, action nda and n ,ns n thus close up the spaes but of course you understand this expansion will not unless the rings free to act 9. "Is the trouble that am experiencing met with by many automobile owners? Yes 1t s very It IS frequently found that the rings thoroughly the grooves that, attempting to remove them they break The failure of their action probably the most frequent of monly experienced by autoists"
 10. Flew can Oildag this annoying ditcn?"
 By forming antfriction on he metals" II. What is the use of forming anti-frction surfaces on the metals when arm using a lubricsting oil to prevent friction?"
 nfortunstely lubrsting oil doe not always iubsicate present but the very sct that your piston rings cylinder @ of sss me the metals srs sos L p by lubcatng oil but ecrnng in actual contact breaking he alm per hitting the metals to into contact would be seriou: matter they would not wear owing to their antifriction condition"
 F. "I formerly used rather a thin oil to lubr- cate my engine, but owing to the fact that the engine commenced to lose power was advised to use very heavy oil, and when this change was made the engine certainly improved in it's power development. Can you explain the reason for this improve r,ent in the engine?"
 "The thst losng evidence piston rings had become cemented in grooves them from expanding end closing the between the pstons and the walls The intro of the heavy oil resulted in the closing of openings by the oil itself but reasonable expect close and hold these spaces against of the expended in the could ehould be done by the piston rings"
 LUBRICATING SALES ( SIS s. 21st St., Birmingham, Ala
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