Engine oil "shelf life"
Can anyone tell me if engine oil has a shelf life. I have a case of Castrol 10W-40,GTX anti sludge formula, API service SM. It's been stored in a cool dry place for approximately 5 years.
In all the oil related threads I've read here, I don't recall any discussion on this topic. Any oil experts here know the answer ?
Chris
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1968 104 , service replacement '96 K301, 42" deck
1997 Scotts 42502X8 , repowered with '96 B&S 18hp TwinII , 42" deck
2007 LA130,21hp Intek v-twin, 48" deck
 As you slide down the banister of Life, may the splinters point in the right direction . 
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