Fleet FAQ

Got Questions? Diesel Fuel Edition

Q. How do I reduce the risk of contamination of my fuels?

A. Fuel can be easily contaminated if not stored correctly. Two of the most common storage problems are water and particulates. Water is the most common on-site storage issue and can make its way into tanks through a variety of pathways such as the tank fill point and condensation from humid air. Water is not only a contaminant on its own but can also lead to the formation of microbiological growth. Tanks should be regularly checked for the presence of water through methods such as water sensing on automatic tank gauging equipment or water-finding paste. Water should be promptly removed when detected. Storage tanks should also be kept as full as possible; less air in tanks minimizes water condensation and slows fuel oxidation. These steps help ensure water and microbes don’t make it onto onboard fuel tanks.

When it comes to particulates, filters are necessary to ensure they do not pass through from the tank to its final destination. Therefore, dispenser and vehicle filters should be checked at regular intervals to prevent premature filter plugging, which may be a sign that your fuel is compromised and that you’re at risk of contaminated fuel entering your engine.

Expert Bio

Answered by : Michael L. Miltenberger

Diesel Fuel Application Engineers

Mike has been with ExxonMobil for 23 years in various positions in the Fuels and Lubricants organization. He is currently the team lead for Diesel Fuel Field Application Engineers in the US and Canada. He has a BS in Chemical Engineering from Purdue University and also has CLS from STLE. In his free time, Mike spends time with his wife and kids and also enjoys playing drums and golfing.

Mike has been with ExxonMobil for 23 years in various positions in the Fuels and Lubricants organization. He is currently the team lead for Diesel Fuel Field Application Engineers in the US and Canada. He has a BS in Chemical Engineering from Purdue University and also has CLS from STLE. In his free time, Mike spends time with his wife and kids and also enjoys playing drums and golfing.

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