I didn't have a rough idle before, but you could feel the engine was running. I bought some petrol-additive fuel injector cleaner, as I do before every oil change. The bottle said it was enough to treat threetanks of gas, so I put it in all at once . Half a tank later, with the stereo on you can't even tell the engine is running without looking at the tacho. This is 500km before insp II is due, with 192,000km on the clock.

Once I've had the valve clearances re-set and the spark plugs changed, I'm sure I'll hardly even hear it running! No wonder they added multiple-start interruption to these cars!