Hi, Our LC200 series has developed a tapping noise at a set rev range of around 1500 revs under slight load at low speed. We tow a big caravan and the noise goes away at normal revs. We service the vehicle by the book, we have used Wynns products for fuel every 5000k which does make the vehicle run smoother in general. There is no unusual lack of power or other issues. We tend to be gentle drivers and do not "flog" the motor at all. It has about 80,000 K on the odo. Any thoughts would be welcome. M&M
