I'm running mine up to a premium synthetic with a LONG OCI. So this time is 7,500. The next is 10k. This is on full synthetic.
I'm very wary of anything called synthetic blend. There is no actual standard for what makes a synthetic blend. So it can be 99.99% group II conventional and one drop of Group IV synthetic.
I'm very wary of anything called synthetic blend. There is no actual standard for what makes a synthetic blend. So it can be 99.99% group II conventional and one drop of Group IV synthetic.