It's developed a bit of a miss now, so I'm convince that it's the fuel. As the level goes down it saturates with the heavier non-combustible particles. It's almost at half, so I will top it up with Primo tomorrow.....

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RIP: 80 300SD
RIP: 79 450SEL
2002 E430 4matic (212,000km)
2002 ML500 'sport'

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