Specification
DEF that is used in Perkins engines must meet the
ISO specification 22241-1 for quality. The ISO
specification 22241-1 requirements are met by many
brands of DEF, including those that carry the AdBlue
or API certification."
The document series ISO standard 22241 will give
information on quality requirements, test methods,
handling, transportation, storage, and refilling
interface.
Spillage
DEF that has been split will crystallize when the water
within the liquid evaporates. Spilt DEF will attack
paint and metal. If DEF is split, wash the area with
water.
Filling the DEF Tank
The fill cap on the DEF tank must be colored blue.
The DEF level is important, allowing the DEF tank to
run dry or operate at a low level can affect the engine
operation.
DEF Quality
The quality of DEF can be measured by using a
refractometer. The DEF must comply with ISO
standard 22241-1 with the urea solution of 32.5
percent.
Cleanliness
Contaminants can degrade the quality and life of
DEF. Filtering DEF is recommended when dispensed
into the DEF tank. Filters should be compatible with
DEF and should be used exclusively with DEF. Check
with the filter supplier to confirm compatibility with
DEF before using. Mesh-type filters using compatible
metals, such as stainless steel, are recommended.
Paper (cellulose) media and some synthetic filter
media are not recommended because of degradation
during use.
Care should be taken when dispensing DEF. Spills
should be cleaned immediately. Machine or engine
surfaces should be wiped clean and rinsed with
water. Caution should be used when dispensing DEF
near an engine that has recently been running.
Spilling DEF onto hot components will cause harmful
vapors.
Storage
Table 22
Storage Temperature Expected DEF Life
Below 25° C (77° F) 18 months
25° C (77° F) to 30° C (86° F) 12 months
30° C (86° F) to 35° C (95° F) 6 months
Above 35° C (95° F) test quality before use
Perkins recommend that all DEF taken from storage
should be checked to ensure the DEF meets ISO
standard 22241-1.
i05359636
Fluid Recommendations
(General Fuel Information)
• Glossary
• ISO International Standards Organization
• ASTM American Society for Testing and
Materials
• HFRR High Frequency Reciprocating Rig
for Lubricity testing of diesel fuels
• FAME Fatty Acid Methyl Esters
• CFR Co-ordinating Fuel Research
• ULSD Ultra Low Sulfur Diesel
• RME Rape Methyl Ester
• SME Soy Methyl Ester
• EPA Environmental Protection Agency of
the United States
• PPM Parts Per Million
• DPF Diesel Particulate Filter
General Information
NOTICE
Every attempt is made to provide accurate, up-to-date
information. By use of this document you agree that
Perkins Engines Company Limited is not responsible
for errors or omissions.
SEBU8732 81
Refill Capacities
Fluid Recommendations
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