Diesel Belly Tank Aging Simulator

See what months of storage do to the fuel in a standby generator's sub-base "belly" tank. Scrub the timeline and watch the diesel oxidise, a free-water layer build up, microbial "diesel bug" bloom at the fuel–water interface, and the ISO 4406 cleanliness code climb — the same contamination Trendfuel monitors live in the field.

This is an illustrative model, not measured data. It demonstrates the trends of stored-diesel degradation — oxidation, water ingress, microbial growth and rising ISO 4406 — to make the problem visible. The aging rates and codes are simplified for teaching, not calibrated lab or field measurements. To see Trendfuel's real, live ISO 4406 data, visit the Live data page.

CAM-07 · TANK INSPECT

● LIVE INSPECTION

Live Cleanliness — ISO 4406

14/12/6

per 100 ml · 4/6/14 µm
elapsed 0.0 mo
ambient 13°C

Storage Conditions

Time in storage0.0 mo

Biodiesel blendB5

Climate zone

Tank fill level90%

PTZ Inspection Camera

Drag viewport to pan · scroll to zoom

Fuel Condition Indicators

Usable fuel

—

Oxidation

—

Free water

—

Microbial idx

—

Legend

Fresh / in-spec diesel

Oxidized · darkened aged fuel

Microbial mat & biofilm ("diesel bug")

Free water · condensation layer

Sludge / sediment fallout

Illustrative model. The ghosted generator is a generic side-elevation of a packaged standby genset for orientation only. Fuel-aging rates, ISO 4406 codes and microbial growth shown here are simplified demonstrations of stored-diesel degradation trends, not calibrated laboratory or field measurements.

From picture to proof

Seeing it age is the point. Knowing when it happens is the product.

This simulator shows why stored diesel drifts out of spec. On real sites, Trendfuel streams live ISO 4406 particle counts (4–70 µm, sub-3-second latency) so you can see the fuel's actual condition, and our strategic partner DieselPure cleans it with single-pass SAE J1488_201010 filtration — routinely taking diesel from 22/20/14 to 9/6/0.

Why stored diesel degrades →

4–70 µm

particle range monitored

<3s

sensor-to-cloud latency

22/20/14→9/6/0

DieselPure single-pass improvement

1M+ L/wk

monitored every week since 2020

Find out what's really in your stored diesel.

Book a site assessment — we'll review your storage, pumping and flow rates and show you exactly how live ISO 4406 monitoring and single-pass filtration would protect your operation.

Book a site assessment →