One of his own links, that he posted more than once, states that one way to combat sludge is to use oil of the correct viscosity.
IIRC, a reasonable oci helps as well.
This "synlube" he boasts of using is not the correect viscosity of any vehicle in his sig. And "never chasnge the oil" does nothing to help.
Now, since he likes to present sites such as that as fact to support his claims, only one conclusion can be reached.
The cars in his sig are sludged.