03ford f250 schaeffers 15-40 15k
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That viscosity number is kinda high...did he add some Moly E.P. treat to this oil?
Hammer
Hammer
Something thick had to be added to the oil to turn it into a 50 weight. I highly doubt it's soot or oxidation thickening.
Hammer
Plus, if I remember correctly, weren't the 03 PSDs the 6.0?
6L PSD engines are oil-eating monsters, and most Schaeffer's 15w40 reports I've seen dropped into the 11-12cst range.
Or, was 15K too long for this oil? Perhaps it had reached the end of its lifecycle and was suffering from severe oxidation?
6L PSD engines are oil-eating monsters, and most Schaeffer's 15w40 reports I've seen dropped into the 11-12cst range.
Or, was 15K too long for this oil? Perhaps it had reached the end of its lifecycle and was suffering from severe oxidation?
Some soot in there?
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