The best way to test the quality of a pressure washer is by the CU (Cleaning Units). The simple math is PSI x GPM = CU. As an example the Vortexx Prosumer+ has 2750 PSI and 3 GPM which equals 8,250 CU. A simple electric unit may advertise 2750 PSI but only have 1 GPM and not be very powerful at all.
*To qualify for the extended warranty you must purchase a supply of Opti-4 oil, follow the oil change requirements as defined in your Honda Engine Manual and always use Opti-4 for the duration of the extended warranty period. Honda engine standard warranty will still apply (GC Series- 2 years, GX Series- 3 years) if you choose not to use Opti-4 oil.