@book{7927,
	author = {Society of Automotive Engineers.},
	title = {The Relationship between engine oil viscosity and engine performance :},
	publisher = {Society of Automotive Engineers,},
	year = {c1978.},
	series = {ASTM STP ; 621, 621-S1,},
	address = {Warrendale, PA :},
	note = {Papers presented at symposium held at various meetings of the SAE.}
}