I hear noises

I posted earlier about some noises that I was hearing, and received some great advice. I put a bottle of fuel additive into the fuel tank and improved the knocking sound, but not completely. I continue to hear the noise sometimes, but not as often. I only hear the noise after I have run the car for a bit, and then turn a corner. I get the feeling that when I turn a corner, the car requires more torque to get back up to speed, and this is when I hear the noise. The noise is almost gone, so should I try another bottle of additive, or could there be a more serious problem with the fuel injectors? I thought about trading in the car for a Toyota, but like this car to much.

Toyotas have troubles, too...


Refresh my memory... What's the noise? When exactly does it happen?

Engine oil or fuel additives shouldn't have any effect on a noise that is heard only while turning...