| Re: Combined fuel heater/filter and engine oil filter
From the 2 JPG images I interpret that this unit is basically an outer container into which a simple fuel preflter has been added. The fuel surrounds the oil filter canister and passes thru the fuel filter on way to the main Fuel filter, which in the attached file is used for both fuels. It also shows the vegetable oil having a looped return. (to maximise heat gain?)
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