I haven't seen this posted, and was curious, so here is a virgin sample of a Group II/III SN/GF-5 that uses the new Lubrizol HyperZDP.
The sodium is a sodium sulfonate detergent. With all that detergency in there I can see how it is designed to fight sludge.
The sodium is a sodium sulfonate detergent. With all that detergency in there I can see how it is designed to fight sludge.