Frequently asked questions
The questions facility and building managers ask us most often.
07 — Questions
Frequently asked questions
The questions facility and building managers ask us most often. If yours is not here, send it through the form below.
What is diesel fuel reconditioning?
It is the process of restoring diesel that has degraded in storage. Fuel is drawn from the lowest point of the tank, filtered to remove water, sludge and organic waste, polished to take out micron-sized particles, then stabilised and returned to the tank. It is an alternative to draining and replacing the fuel.
Do our generators have to be taken offline?
No. The fuel never leaves the storage tank and tank cleaning runs concurrently with polishing, so the generator stays available throughout the job. That is the main reason the work suits hospitals, airports and data centres.
How often should stored diesel be inspected?
We recommend fuel quality inspection, testing and sampling every three to six months, and fuel polishing with tank cleaning every six to twelve months. The right interval depends on what sampling finds — water level, microbial growth, degradation and sludge.
How do I know if the diesel in my tank has degraded?
Common signs are clogged filters, water at the bottom of the tank, a darkening of the fuel and visible haze or suspended solids. Degradation is gradual and often invisible until the generator is called on, which is why scheduled sampling matters more than waiting for symptoms.
Which standards do you test against?
ASTM D975 for diesel fuel quality and ISO 4406 for cleanliness. Testing covers water and sediment, density, particulate counts, microbial contamination, flash point and visual appearance.
What do we receive at the end of a job?
A certificate of analysis documenting the results against ASTM D975, including a before and after comparison from independent lab analysis. It is an auditable record for your compliance file rather than a verbal assurance.
Whose responsibility is generator fuel quality?
Generator manufacturers require clean fuel meeting ASTM D975 and ISO 4406, and responsibility for meeting that standard falls on the building owner or facility manager rather than the generator supplier.
Which areas do you serve?
We are based in Cheras, Selangor and work across the Klang Valley and Malaysia, including sites reached through Malaysia Airports at KLIA 1, KLIA 2 and Labuan.
Find out what condition your stored diesel is in
Book a fuel quality inspection and you will know where you stand — sampling, independent lab testing and a written certificate of analysis, with the generator available throughout.