I just bought a 94 530i 5spd and unfortunately did very little research before this purchase. I fell in love with this car after 2 min. behind the wheel. This car is "currently" mechanically flawless at 124K (no dash lights lit, dry, smooth, and fast). When I got it home, I began looking for any and all data related to this car (unable to reach previous owner). Needless to say, it wasn't long before I became quite familiar with the Nikasil "Leak Down" issue. While changing the oil, I confirmed that Nik has not been replaced with Alusil. Since then, I have been losing sleep while wrestling with the dilemma of what to do now. I love this car (it is 100x more car than my Taurus SHO), but I find myself worrying every time I'm behind the wheel (listening/feeling for noises, loss of power, rough idle, etc.) Should I sell it? $5K sounds like a lot to replace Nikasil. Is there an oil additive that might prevent leak down? Fuel brands/additives? Let me know what you think...Thanks!