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when i looked up the Swepco 201 specs, it says it's a GL-5 oil..the other guys (i.e. redline) go out of their way to distinguish GL4 from GL5, something to do with the corrosion properties of the GL-4 on "yellow metal".
So has anyone had Swepco in long enough to see if they had any problems??
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1990 C2 Cabriolet Guards Red 
'81 928 Zinnmetallic Project Car (sold)  )
'87 944na Maraschino Red Metallic (sold) )
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