The Colloidal Graphite "Filtrate" type products were from a completely different lubrication strategy, likely originating in pre detergent oil type and genuinely assisted oils available to help avoid metal pickup etc.
Pre-detergent types relied upon the oil not holding contaminants in suspension and letting them drop out of circulation into sump etc to be removed and cleaned out to pre determined schedule, often without any real filtration.
Detergent type try to keep any contamination in suspension to be filtered through whatever filtration was present to be removed in that way.
My father used filtrate additive in racing a bike, was supported by the factory agreement for which I still have the paperwork, along with telegram of congratulations for a specific race result.
He observed though that the factory NSU race team was very significantly different to most in that era for lubrication on their bikes. They prepped them and heated the engine with a blown heat scource, also heating the oil in a pan on a primus stove prior to filling the engine and starting it, then to be sent straight out to race.
The significant point of this is that the Honda blue print is more or less exactly that NSU arrangement, of very tight engineering tolerances and favouring absolute optimum heat range and targeted oil viscosity as pre requisite to engine design.
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It's this type of engine Honda appears to have copied.