@book{6677,
	author = {Stewart, R. M. and Society of Automotive Engineers.},
	title = {The Relationship between engine oil viscosity and engine performance :},
	publisher = {Society of Automotive Engineers,},
	year = {c1977-},
	series = {ASTM STP ; 621, 621-S1,   },
	address = {Warrendale, PA :}
}