Woody
Well-Known Member
I didn't know what asphaltenes were, this from Racor surprised me....So I was fortunate enough not to have biologic issues with any of my diesel fuel systems but when I bought the 58 all of the Racors had black particulate matter throughout. I had it analyzed and the results indicated Asphaltenes. I had all 5 Racors removed, cleaned and rebuilt with no reoccurrence. Not sure if that's what some of you are seeing or if you have Biologic AND Asphaltene issues.
Fine solid contaminants that do not fall into the bowl immediately, are also carried with the fuel flow until they are stopped at the surface and sub-surface of the Aquabloc media element, at a rate and size that depends on the micron rating being used. Asphaltene-like soft solids, naturally present in diesel fuel, are known to be the main cause of element plugging. A special Aquabloc surface fiber design prolongs element life by resisting asphaltine plugging and is the reason Racor filters have such long life.
https://www.racornews.com/single-post/2016-1-15-racor-turbine-series-the-inside-story