That doesn't sound ... uh. . . . . 'healthy'.

What about oil consumption? Tilting piston???? Wouldn't expect it though... not at that mileage...

... but still better then ... indeed ... your big end.... wouldn't expect that either ...

Use a screwdriver as a stethoscope to localize the source of that sound more accurate.

HJ

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Riding the Mad Mule !! ... no more... went orange...