The difference is when LS Bell Hammer GOLD and Bell Hammer Seven are used as car engine oil additives, but the effects and aims are the same.
However, as a detailed content
1) The base oil used is different. (The amount of extreme pressure agent is the same)
2) Bell Hammer Seven has an added anti-vibration effect due to organic molybdenum.
3) The LS Bell Hammer GOLD has a better response.
That makes a big difference.