Hmm.....
The Temperature Of The Oil will be at Whatever Temperature the Cylinder-Head, and therefore the Injectors, is at!
No amount of heating prior to the IP(OR after for that matter) is gonna change That!
The Flow is TOO SMALL. --Around 50CCM per 1000 cylinder firing strokes--AT FULL LOAD.
The Specific Heat capacity of VO is only Half That of Water.

Simple Physics.
There is SO much Mis-Information on VO forums, whats said there cannot be used as fact!
__________________
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Alastair AKA H.C.II South Wales, U.K. based member
W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.
W114, 1975 280E Custard Yellow,
-Great above decks

needs chassis welding--Really will do it this year....