Has anyone tried this? ValvTect - BioGuard Plus 6 It looks like it does everything except anti-gel.

From their propaganda:


The only product that combines a biocide with a stabilizer, lubricity improver, corrosion inhibitor, moisture dispersant, injector detergent and cetane improver. BioGuard Plus 6 solves all diesel fuel problems. BioGuard Plus 6 prevents bacteria and algae growth plus:
Stabilizes diesel fuel for up to 2 years
Prevents rust and corrosion
Lubricates fuel pumps and injectors
Clean-up and prevents injector deposits
Disperses moisture
Increases cetane
Unique formula combines a biocide with a stabilizer, lubricity improver, corrosion inhibitor, moisture dispersant, injector detergent and cetane improver to solve virtually all diesel fuel problems. Stops bacteria and algae growth. Stabilizes fuel for up to two years by dispersing moisture to prevent rust and corrosion. Lubricates fuel pumps and injectors, cleaning up and preventing future deposits. Increases cetane for improved performance.