Still fuel diluting like crazy and other than the aluminum spike and slight lead increase, I'd say this oil is doing its job. Weird thing is that this OCI we had more highway trips than normal and fuel dilution went up. We did have a bad cold snap where temps were WAY below normal for a week or so. OAI is saying change at half this interval but I'm going to stick with the plan of around 3,000mi OCIs. Filter info is wrong. I ran an Amsoil 20mic filter not a 35 mic wire mesh filter. I used the K&P wire mesh filter the time before this OCI. Thoughts on this one? "Particle spike" with the aluminum? Viscosity stayed in spec with all this fuel so I'm sticking with the ESP. Very happy with it.