The Bismarck Tribune Newspaper, March 23, 1935, Page 18

IS NEW PROCEDURE IN PREPARING OILS Bolvent Extraction Also Is In- novation Which Adds to Quality Lubricants Motor vehicle operators still are little aware of important changes which have taken place in the motor oils offered them by some of the leading suppliers. ‘The oils are thinner and purer than they used to be, and at the same time they offer dependable lubrica- tion over a wider range of tempera- tures than ever before. Back of these improvements are two radical changes in manufactur- dng methods which have been tak- ing place over the last four years. ‘These are known as solvent extraction @nd propane dewaxing. The base stocks from which motor fils are made contain wax, asphalt, and other impurities. Old processes for removing these impurities were slow, expensive, and relatively ineffi- cient. The new processes take them @ll out swiftly and economically. Anyone who has ever used a shav- lotion has felt the coolness on his face as the alcohol evaporated. The game principle of physics, that evap- ration brings reduction of tempera- ure, is used in propane dewaxing. Propane is a light petroleum gas ‘at ordinary temperatures and pres- @ures, but it can be liquefied by ap- “Serene of about 150 pounds pressure. liquid form it is clear, colorless, f@nd only about half as heavy as fwater. ‘When a heavy oil stock is dissolved fn this liquid and the pressure is re- feased part of the liquid propane “boils off,” turning again into gas. This evaporation process, with the re- ease of pressure, chills the mixture as the evaporating shaving lotion ‘oools the shaver’s face, only toa much Greater extent, The temperature of the mixture quickly falls to 40 de- grees below zero, and the extreme cold causes all the wax in the oil to harden Anto crystals or particles, These par- ticles can be filtered out approxi- mately 100 times as rapidly as wax Could be removed by the old process @f ordinary refrigeration. ‘There is left behind a fine stock from which to complete an oil that will stand any normal degree of cold without any tendency to solidify. The propane is distilled from the dewaxed il so that the oil has @ high flash point and the propane can be used over again. Propane dewaxing not only gives the motorist low pour-point oil, which will flow at temperatures far below sero; it also simplifies refining. Much less expensive refrigerating equipment is necessary, since the pro- pane process produces a low temper- ature more easily than any of the previous methods. Propane thins the ‘Airstream’ Becomes Companion to ‘Airflow’. For the more conservative automobile owners, De Soto introduces a companion to {ts radical “Air. flow” in the form of the “Airstream” model shown above This new product has all the mechanical and riding advantages of the “Airflow” and yet does not depart so distinctly from standard design. Both types are equipped with ride stabilizers to reduce sidesway on curves, high compression six-cyline der engines on “floating pow and automatic transmission overdrive. the latter at extra cost. oil to such an extent that it can be aiewnss cise °83INEW AIRSTREAM, RESTYLED of propane to dissolve wax further > aids the separation of a low pour point oil. ta order to give the wax-free oils “high viscosity indexes,” or capacity to lubricate properly at operating tem- |Latter Models Have Ride Stabil- peratures, high and low, with as lit-| i tle change in consistency as pos- izer and Hypoid Gears in sible, research experts have develop- Rear Axle ed the application of another new kind of treating which they call chlorex extraction. In this process} A new De Soto Airstream line and the basic oil stocks, after or before |Testyled De Soto Airflow models will dewaxing, are given what has been | be exhibited at the Bismarck automo- well described as dry cleaning. ‘bile and style show March 28, 29 and Chlorex is a trade name for a|%0 by Short Stop Super Service. chemical known as dichloroethy! ether.|_Alrstream body types include busl- This chemical shows an unusual af- |"€SS coupe, rumble-seat coupe, four- finity or liking for the low grade |400F sedan, four-door touring sedan, molecules in oil and after joining up two-door sedan and two-door touring with them settles to the bottom of the |¢dan, all on wheelbase of 116 inches. treating tank, while the high grade| Airflow types are four-door sedan, molecules rise to the top. As the low benlndiieg town sedan, on 115%-inch grade molecules thin out too much under heat, break up under heat and|, Both lines comprise the following wear to form sludge, and thicken ex- features: High-compression engine, cessively when cold, their separation |Synchro-silent transmission, tapered- by the use of chlorex is desirable be- |leaf springs, “floating power” engine| compression cause it leaves only the molecules|mountings, rust-proofed all-steel/to 1 optional. The which can be depended upon to give |bodies and hydraulic brakes, with compression good lubrication at all engine tem-| Besides, Airflow models have a ride| cast-iron cylinder peratures and wear well in spite of |stabilizer to prevent car sway when , their continued battling with friction. |Tounding turns at high speed, and hy-| The steering of The remaining molecules make an|Poid gears in the rear axle, said to/ perfected. A new, excellent lubricating oil which will not |enhance the performance and comfort capable of sludge and has a “high viscosity in- [Of the cars. dex.” An Overdrive Separation of undesirable elements | 70°, Siso have, optional st extra] used to be accomplished by treating | Di" on rare io ta altech with acid and by filtration through “ fuller’s earth or other clay. Many re- fineries still are using these methods. They have the drawback that they are expensive and leave undesirable residual products in the oil. So great a revolution has this pro- cess caused that it now is being taken up by other refiners, regardless of whether they are using Mid-Con- tinent, Pennsyivania, or other crude oils as base stocks. Its efficiency en- ables any refiner using it to produce @ better oil than can be produced by old treating methods no matter what base oil is taken. | i BF a 2 i z : i iZ i i B & they Fite og8a i H gf Front Valve Seat Inserts ¢ New Ventilated Clutch Chromium- Plated Headlights Upholstery 18 BIG, handsome Airstream De Soto costs just a few dol- Jars more than thelowest-pricedcars! But what a world of extra-value those few dollars buy you! A De Soto that’s smarter, bigger, with fine-car finish and upholstery... a mighty 93- horsepower engine that holds world speed records galore, and a Coast to Coast economy record to boot. You get the thrilling “Floating value features most cars don’t have! Official Chrysler Motors Commercial Credit Pian makes ownership easy.’ steam DE SOTO Ses COMPANION TO THE FAMOUS AIRFLOW Short Stop Super | Service Station 816 Main Avenue any road... in the Airstream Phone 314 BF S83 EE & 5 z AIRFLOW PRIDE OF DE SOT 21 © RE etree LOW-PRICE FIELD AS SEASON OPENS Two Lines of Sixes Join Im- proved Straight Eight in Popular Family Fe rrpesleth: al oe Gcteeeee ie tl ne aH i i if Ep &s il Fj F = : REERIE pul ' A a i EE Be geesy- Ne THE BISMARCK TRIBUNE, SATURDAY, MARCA New Low-Priced Six Joins Pontiac Eight Pontiac’ greatest contribution to automobile progress in 1936 ts touring sedan of which is shown above. Both eights and sixes appear with the new “turret” top and with an advanced type of triple-sealed hydraulic moved forward, to providy more comfort for passengers, 4g mechanics and design give them great advantages. er. There is a new departure in the style of the divided front seat of the Eight 2-door models. Teldtiel HA Hig ‘ i itl Hi lett ii AH gS Hl F f Tee COMPANION CAR TO A FINER, MORE LUXURIOUS, LOW-PRICED EIGHT Scarcely had Pontiac dealers opened their showrooms on announcement morning when the news traveled over America— Highlights of Pontiac Quality for 1935 1, Solid Stool “Tusret-Top” by Fisher. ©. 10-Secend Stasting at Sere. 1. Even Geoater Recncmy. 0 Me Decft Venttiation. ©. Raco-Acticn. 30, Legvage and Spare The Engines. Compartment, Michigan. Standard group of accessories extra, %On the Eight and De Luxe Six Models. to do for years. Pontiac has brought fine car quality and per. formance into the low-price field, and combined them with economy and dependability few cars at any price can approach,” But no rumos, however flattering; can do justice to the pew Jows priced six from Pontise, The public promptly cheletened it she most beautiful thing on wheels; The new bodies represent the greatest safety advance in a decade—solid steel “Turret-Top”* Bodies by Fisher, Nor is that all, The Pontiec Six gives you the super-safety of big, triple-cealed hydraulic brakes—the extra long life of silver-alloy engine bearings—smoother, livelier six- cylinder performance, and numerous other advancements which make the price of the car phenomenal. How can Pontiac give so generously of everything motorists want and need? The answer lies in its great plant. Only « plant 80 modern could build « low-priced car 20 fine, PONTIAC MOTOR COMPANY, PONTIAC, MICHIGAN. Disisten of General Metre NEW PONTIAC iicx7: *615’ FLECK MOTOR SALES, INC. Avenue West New .N. D. Wilsed Re Low Ba Bismarck, N, Dak. Vd Mott tt, N. toe Garage, a 4 ~