Hallo Eugene,
Don't worry you are helping me alot.
All the thoughts I have were true and became more clear on your explanation.
I have read the link about Asphaltene and I have some questions.
First of all some fractions of the encyclopedia
Asphaltenes consist primarily of carbon, hydrogen, nitrogen, oxygen, and sulfur, as well as trace amounts of VANADIUM and NICKEL
However, it is undisputed that the asphaltenes are composed mainly of polyaromatic carbon i.e. polycondensed aromatic benzene units with oxygen, nitrogen, and sulfur, (NSO-compounds) combined with minor amounts of a series of heavy metals, particularly VANADIUM and NICKEL which occur in porphyrin structures
Also that 100% separation never happen.
Can I assume that, the (small) amounts of the components Vanadium, Nickel, Micro Carbon Residual, Sulphur, Asphaltenes itself, can bind together or form a chemical reaction sufficient to wear down a plunger in a short period?
Also taking in consideration the high temperature (128 degrees) of the fuel for visco regulation and possible increase of temperature bymeans of compression of fuel in the Fuel Pump.