Hi FARWEST
Thanks for sharing the info. I believe Fuel Doctor is an emulsifier. I have been researching a few other items & discovered the following
- aftermarket fuel filters do not have capability to separate water. (makes me wonder if the water sensor will be triggered)
- The OEM filters have fuel/water separator on the descriptor. I am waiting on confirmation but I suspect they may have a hydrophobic material layer.
- It appears the most common cause of pump failure is lubricity of the fuel or from water damage. Without a lab test to confirm most Australian fuel is 460micron (wear scar) spec for lubricity. For water 200ppm.
https://www.legislation.gov.au/Details/F2019L00456
Interestingly diesel is allowed to contain up to 5% Bio without the requirement to be advertised. Mandatory BIO 2% NSW & 0.5% QLD. Bio has a higher affinity for water. Below study for additives shows bio had best lubricity rating. Maybe why HPP's failures seem to be less noticed in Australia.
https://www.jatonkam35s.com/DeuceTec...itive_test.pdf
https://www.researchgate.net/publica...cationCoverPdf
- Most fuel/water separators filters do not remove emulsified water. Testing standard SAEJ1488. The Jeep setup makes things interesting with the in tank transfer pump (90psi) to the HPP.
- Most OEM manufactures in the US trend towards demulsifiers. This may depend on fuel system filter setup e.g filter on suction side of transfer pump.
Thought I would share some info for discussion.
Cheers,
Freejeep