The TG16 doesn't filter the oil any better than the TG8A does, they use the exact same filtration material. Both share the same 99% filtration efficiency rating. The larger model can go longer between changes since it has a larger filter surface area area to trap dirt in but that's really its only real advantage. Both filter down to the same exact size of particulates (dirt). The slightly larger oil capacity is insignificant.I use the TG8A or equivalent. Its a bigger version of the TG16....more filtration.