As between cassette adapters and FM transmission, is there a significant quality difference? I have a CD changer and would not be inclined to junk it merely to accommodate a solution such as the iCruze.

I have a 1999 V70 XC. 71K miles, all the recommended factory service through the dealer that sold it to me new. We have on and off had problems with the check engine light, most of which were attributed by the dealer to a bad seal on the gas cap. Over the last six months, though, the check engine ...