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PAGE 6, WEDNESDAY JUNE 6,1984, WHITBY FREE PRESS AUTO GUIDE Soakdown temperatures put stress or> oh Tu rochagersrequ ire spe cili lubrication If' you are one oai the praud awners of' a ncw tur- bocharged automobile, or if' you are thinkiîng about owning anc. you may have ta pay some expensive re- pair bis unless you use the right motor ail. While somne motorists may have a general idea af a turbocharger's fonction, many do not.' Norm Hudecki, an engi- neer for Valvaline Oul Company of Lexington, Ky., affers the following definition: "A turbo- charger ks a device mnount- ed ta an engine that uses a turbine ta camprcss air be- fore it, k delivered ta the intake system,"' Hudecki said. ",'The turbine is powered by gases pra- duced in the car's exhaust system. This compressed air impraves an engine',s power output, resulting in hihrhorsepower when the car accelerates. We have made acommitment to Quality Customer Service. We pledge to do our best to ensure your satis- faction with your vehicIe, from pre-' deliuery through warranty and retail service. If you should experience dif- flculty with your vehicle, please let us know. We'U correct it to the best of our Technical jargon aside, though, what a turbo- charger basically does is boost the power ai an en- gine. That is why they are increasingly popular as op- tional equipmcnt on new cars. "In order ta meet Cor- porate Average Fuel Econ- amy (CAFE)' standards, which require that cars produced in the 1984 mad- el year obtain 27 miles per gallon, -while at the samie PLEDGE ai1ty, o7TJd failt! s ou, Semg 576-1800 time satisfying demands ai the buying public for per- formance, car manufactur- ers have settled an the tur- bocharger as a solution ta their dilemma," explained Bill Runkle, another Val- voline engineer. Because a. turbocharger wilI nat engage unless ac- celeration is demanded, power is gained only when needed. "in the past, pro- viding consumers with power mecant providing them with big, fuel-drink- ing engines. ln today's passenger cars, however, burbochargers are mfost commonly mounted an small fuel-efficient tour- and six-cylinder engines," Runkel said. While the turbocharged engine is the latest techno- logical devclapment im- pacting the ncw car market (experts expect ta s Il some 350,000 turbo- chargcd vehicles in 1984, up 1,500 percentý from 1983), it is impartant ta re- alize that the technology daes demand certain pre- cautions - in particular, strict lubrication require- ments. A turbacharger' is powered using gases pro- duced in the exhaust sys- tem. These gases generate extremely high tempera- tures within the turbo- charger unit. "During aperation, un- der normal driving condi- ions during average warm weather temperatures, the ail temperature inside-a turbocharger reaches around 2350ýF," Hudecki said. "A non-turbocharged engine reaches a level of appraximately 220'F.- Hudccki explained that neither af these tempera- turc levels is really con- WHILE TURBOCHARGERS ARE GAININO in popularity among car owners who want more power along with fuel'-off iciency, the units demand extra care with lubrîcation. Valvoline engineers recom- mend an, ou that is high in oxidation inhibitors and detergents. t sidered harmfol ta a mantor ail 's lubricatian ability. However, the need for a special matar ail, for a tur- bocharged engine is caused by what happens when the engine, is tumned off, nat while it is running. While an engine and tur- bacharger are aperating, ail cantinuously flows thraugh the engine and tur- bocharger, lubricating moving parts and carrying away heàt. As soan as the engine i t*urned off, though, the ail staps flow- ing through the turbo- charger, whose intern aI mechanism had been turm- ing at thousands af rpm's. In a few minutes, "saak- down" temperatures can skyrocket ta more than 600'F, more than triple the temperatures normally ex- perienced by regular motar ails. According ta Hudecki, the danger fram the ther- mal stress af 600TF. 'saàk- dawn" temperatures is that the type ai ail used miay nat provide adequate pro- tection.,'1 the ail in the turbocharger system is 'nat capable ai maintaining its lubricating praperties aiter exposure ta extremely high temfperatures, oxidatian and the formation ai car- bon depasits is likely taoc- cor. 'Cansequently,"'I-lu- decki explained,. "the bearings within. the -turbo unit 'may seize or fa'l,' causing expensive repiairs or replacement af the tur- bocharger." To pratect a turbo- charger from damage caused byfailure ai lubri- cants exposed ta dangerous .'&soakdown" tempera- turcs, Valvaline engineers, recammend an bil that is high in oxidation inhibitors and detergents. Valvaline Turbo V Mo- tor Oil, a new praduct, is the anly ail 'on the U.S. market at this time which is specially formulated for turbocharged'passenger car engines and w'hich has been tested on the anly tur- bocharger test stand in the world. according ta Ho- decki. "A select additive package has been added ta the ail that helps it with- stand the 600'F. turbo- charger .temperatures -and fight oxidatian, while modern detergents help keep contaminating sludge and deposit 's dispersed," Hudecki said. Additionally, most auto manufacturers recommend that the ail* in a turbo- charged engine be changed mare frequently than, in regular engines. While mast manufacturers ec- ammend an ail change ev- ery 7,500 miles in non-tur- bocharger engines, they recommend that ail in a turbacharged enginebe changed at reduced mile- age because ai the thermal stress ta which' the ail is exposed. Turbochargers will con- tinually increase in .papu- larity," predicts 'Hudecki. "Motorists can enjay the benefits ai long, *trouble- free and law-cost operà>- tion ai their turba.chargers as long as they remfember it requires a special motoir ail. t GUSROW INVITE YOU TO VIS'IT OUR LARGE DISPLAY 0F NEW & USED CARS & TRUCKS GOODWILL USED CARS 1250 DUNDAS ST. E., WHITBY 668-2133 TH RIFTY RENT-A-CAR, 306 KING ST. W., OSHAWA - 571-2255 WH ITBY - 668-5846 LEASING »FOR ALL MAKES AND MODELS ON PREMISES FINANC;ING 120IDNDS S.E &HPINzT WHITBY 668-846--8-9Tornto 86-166- IfMERCURY AUTO BODVAhi? "NOT YOUR AVERAGE BODYSHOP", COMPLETE COLLISION' FRAME REPAIRS REPIR &PAINTING FREE ESTIMATES ALL WORK GUARANTEED. RONALD MOQUIN 324 ASH STREET, WH ITBY 668m8522 TUNE'UP SPECIAL 4c'yI1. 6 cyI. 8 cyI. $*33u*95 $36.B95 $39n95 25 POINT INSPECTION Plus oil,& f ilter change & chasis lube Ail for $390-95 10 POINT FRONT END INSPECTION $9:095