I use a mixture of centrifuged WMO and red diesel (60% WMO, 40% Diesel) in my MEP-002A and 003A. I've tried it in the MEP - 803A but it sure wasn't happy.. The 002 & 003 both purr like kittens on the mixture.
By chance have you done any load testing with your 002 or 003?
My son decided to try making some black diesel today, 2 gl. WMO diluted with some gasoline we previously used to degrease some parts , to match the viscosity of HHO, and then filtered to 4 microns and mixed that 50/50 with HHO.
Put it in what I would consider my least valuable 002 ( just in case.... ) and ran it for an hour or so.
At first glance it seemed to start and run just fine. Slightly different smell to the exhaust for sure.
We loaded it up and I think we are either getting less power out of it, or perhaps the governor needs adjusting, but I'm pretty sure I had it adjusted to be able to handle 6500W with under 2Hz droop.
Running on the black diesel it seemed to start drooping excessively at just over 5000w.
Previously this machine would begin to smoke slightly as you approached max. output, but continue running within tolerance and would smoke a bit more once you pass 100% load and eventually it would begin to loose RPM if load increased any further.
On the Black diesel there was never any smoke at all, even when the governor lost it's ability to hold the RPM's within tolerance.
Even as the set drooped below 58Hz there was no smoke at all.
Looking at BTU ratings for the different components, HHO should be 138-140K, the WMO should be in the 145-160K range and gasoline about 117K, so given the relatively low percentage of gasoline added ( <20% ) I wouldn't think the final product would contain less energy than HHO alone, in fact it should be higher.
Before testing any further I'm going to switch back to treated HHO and retest to be sure the governor is still performing as expected, but was curious if anyone has any real performance data available from an MEP?