Page 7 Advertisements Column 2

Sun (Auckland), Volume II, Issue 585, 11 February 1929, Page 7

AN EXPRESSIVE NEW WORD OF VITAL INTEREST TO MOTORISTS appotenic : ap' po-ten' ik ) THIS is a new word. You will not find it in any dictionary. It is not to intrigue you that this new* word has No. l of a Series. been coined, but because the motorist’s vocabulary is incomplete without it. This is how it is derived: From the Latin, ad (ap), meaning added to ; and potens, meaning powerful . This is its definition: appotenic: possessing increased power; said of a gas that, being stable to heat and high compression, will therefore neither audibly nor silently “knock” in a high compression engine . dC IVHv // r I 1 0 give a new word to a language is no new thing. Scientists frequently have had to do so. A new quality, a new found substance, calls for a term, and the scientist making the discovery gives it a name -if not his own, then one which sums up in a single word the virtues of his discovery. In just such a manner this word “appotenic” originated. It came about like this. A natural inherent quality in Plume Motor Spirit demanded a word that would embody the definition given above. The word “power” is not enough. The phrase “power without knocking” is not enough. The word wanted was a term to explain that remarkable ability of Plume to resist high temperatures and high compressions; to overcome not only knocking which is audible, but also the silent loss of power inside the combustion chamber. And “appotenic” is the term. THIS word goes right to the heart of motor spirit quality -of combustion -of motor engine efficiency. Appotenic quality goes right to the cause of the knock problem and solves it. This is why “appotenic” is a most important word in the motorist’s vocabulary. In future announcements we will give you further information about the word “appotenic” and the vital message it reveals. VACUUM OIL COMPANY PTY. ltd.