Show IRES IRE'S RES RE'S SOME DOPE PEM ON lUBRICATION Of gF AUTOMOBIlES A 1 consideration of r the i properties s and an in analysis of or oro cylinder oils e o conditions under which t they luale lu- lu ale lead us to tho the belief that ago ago a go majority of the complaints out tit ut cUn cylinder cr oils can be accounted as due to ignorance regarding the governing their use Sos So Sora ra s S G. G S S. S Bryan Dryan of tho the naval al experiment station Anlis Anlis An- An n ering lis 1 tad ld 1 Continuing his article So Solly Soy So- So to Journal of the American for tor liel Feb Feb- lly iv y of or A Naval aval Engineers fary Sty fY states stales The tl three ee essential requirements ia fa a go gp goG Ju motor cylinder oil are it Il It must lubricate the piston at al the temperatures en en- en untere In the cylinder Second Second- must must give ghe a soo good seal to the pis- pis n n and amI rings Keeping them tight bd d preventing leakage of ot the oil and gasoline past them thorn Third lt It H must mist burn hurn without forming cars cur cur- curn curon on s n d deposits posits in the tho cylinder cUnder when an ancess eRg cess of oC the oil gets into tho the com com- I stion v. v a space Wc t r W Ve e have seen that with the water atel mn In the tho Jackets the tho temper- temper lure UfO ore of the Inner surface of the tho c cylMer cyler cyl- cyl l Mer er cr walls will l be c about degrees f Tho The temperature of the layer laer of that is In immediate contact with o cylinder walls which is the part t t regulates the thc friction cannot beuch bo be bouch puch uch higher than this I do not ow now of an any n motor olur oils that have havo a ah ah JUh h point lower than degrees F F. tho temperature of the c cylinder alls gets up as high a as this In a at cooled t r cooled motor there Is l some some- ping Ing radically wron wrong and the tho remy rem rem- y is not to get gut another oil of high high- flash point but to locate tho the trou- trou and remove it fIt It t is Js an nn old theory that was 36 never tided n ce on solid facts fuels that a ta high h point Is la a L necessity In a motor rh i 1 or the oil will burn turn up without ut ving ip an any lubrication rho Tho point overlooked o that when wo we have bave maximum temperature of the bases gases i the cylinder of oC 2700 jOO degrees I. I F. F and aril n average a temperature of o dees dees de- de es F F. F an oil with a fla flash h point of 0 o degrees F. F will offer but lilUe little ore resistance resistance- to bur hurtling burping than one une uld of ot degrees F F. Either oil will hum burn urn if kept for or nil any I ot of time in ht contact with the t t. t gas gna Lubricating oil does docs o s riot liot I irn La 10 very easU easily or ur very fast fast hower how- how I er and the time lime given I cn for It U to torn rn In ln a a. motor clIna cylinder r- r is Js' Very cry ery I ort rt |