Remember my November 16, 2013 post “14 Year Old Penske & Silkolene?”
I sent the oil to Silkolene in England for testing and this is what they had to say:
“The Silk Pro RSF 5WT tested good. See the pic below where you can see the oil is still clear and no sediment was seen in the sample. Viscosities were consistent as was the viscosity index with new Silk Pro RSF 5WT. The material also looks good and suitable for continued use.”