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I have an intermittent buzzing at random times when the ventilation system is resetting. I am advised that there are 3 little motors that are used to operate the different flaps for the system and one or all of these motors may be faulty.After the buzzing has been on for 8-10 seconds, it goes off and silence reigns! It is a minor irritant that one can live with, and I would be interested if anyone else has had this problem and the cost implications in putting it right. Thanks, SKIP

I have recently acquired a 2002 Lexus RX 300.While the car is a joy to drive, the petrol consumption for mainly suburban driving is dreadful. I am considering installing a tank and management facility for LPG fuel at a cost of £950.The vehicle can be driven by petrol or LPG as a fuel substitute. Does anyone have experience of this, and are their any unforseen snags? Many thanks. SKIP