october2021 - 41
ing nozzles, tanks, and equipment are kept clean
and protected to avoid the infiltration of contaminants.
Awareness should also be heightened when
filling the DEF tank from a smaller container using
a funnel.
" Dirt, grease, or fluids previously poured through
that funnel can contaminate the DEF, " Shell's Jones
said. " Additionally, the DEF fill opening should be
kept as clean as possible to prevent possible contamination
when a DEF nozzle or funnel is inserted. "
For a fleet that has its drivers refill DEF on the
road, control over product quality is somewhat relinquished.
But Harmening said there are still some best
practices fleets can follow.
" Certain states adopt regulations that require
people selling DEF to report the manufacturer and
brand name to the end-user, " Harmening explained.
" In addition, sellers may be required to report certain
assurances that the DEF meets the ISO 22241 specification.
Savvy drivers can always ask the cashier
at the gas station for that information if it isn't printed
on the receipt. It's an even better idea to ask that
question before filling up. "
For those drivers who carry DEF with them in the
truck, Harmening said
there are also some
rules of thumb to follow.
First of all, a driver
can look for a product
with the API stamp of
approval. Secondly, look
for an expiration date. If
one doesn't exist, look
at the traceability code
for a date. " That date
is usually equivalent
to the packaging date, "
Harmening pointed out.
Dr ivers should
also be careful about
storing a jug of DEF
in their trucks. If a
truck is parked out in
the sun for long periods
of time, ambient
temperature can climb
rapidly and the useful
life of the DEF can be
reduced considerably,
likely down to that
six-month mark.
When topping off the
DEF tank, Jones said a
driver should look for
a brown film layer on
top of the DEF. That
indicates contamination.
" Do not start the
engine until the tank
can be drained and
refilled, " Jones warned.
A little more complex
practice is the utilization
of a refractometer.
Designed to measure
the concentration of
water-soluble fluids, a
refractometer can help
technicians or drivers
check the purity of the
DEF they are using.
Regardless of what
types of standard
processes are put
in
place to preserve DEF
purity, Jones said everything
ties back to the
overarching best practice.
" A commitment to
meeting the ISO 22241
standard 100% of the
time is very important, "
Jones said.
FleetMaintenance.com/Inquire
October 2021 | FleetMaintenance.com
41
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october2021
Table of Contents for the Digital Edition of october2021
Hitched Up: Part procurement is such sweet sorrow
Equipment: AMT service shifts forward
In the Bay: The essentials of truck triage
Shop Operations: Reaching peak fuel-efficiency
Fluid & Filtration: Dealing with dirty DEF
Under Vehicle: Ins and outs of servicing modern wheel-ends
Management: Overlooking the point of PM inspections
Diagnostics: Increase in electronics drives need for diagnostic tools
Training: Inside the ASE test development process
Fleet Parts & Components
Tools & Equipment
Classifieds
Guest Editorial: Six steps to achieve zero shop accidents
october2021 - 1
october2021 - 2
october2021 - 3
october2021 - 4
october2021 - 5
october2021 - 6
october2021 - 7
october2021 - Hitched Up: Part procurement is such sweet sorrow
october2021 - 9
october2021 - Equipment: AMT service shifts forward
october2021 - 11
october2021 - 12
october2021 - 13
october2021 - 14
october2021 - 15
october2021 - In the Bay: The essentials of truck triage
october2021 - 17
october2021 - 18
october2021 - 19
october2021 - 20
october2021 - 21
october2021 - 22
october2021 - 23
october2021 - Shop Operations: Reaching peak fuel-efficiency
october2021 - 25
october2021 - 26
october2021 - 27
october2021 - 28
october2021 - 29
october2021 - 30
october2021 - 31
october2021 - 32
october2021 - 33
october2021 - 34
october2021 - 35
october2021 - 36
october2021 - 37
october2021 - Fluid & Filtration: Dealing with dirty DEF
october2021 - 39
october2021 - 40
october2021 - 41
october2021 - Under Vehicle: Ins and outs of servicing modern wheel-ends
october2021 - 43
october2021 - 44
october2021 - 45
october2021 - 46
october2021 - 47
october2021 - Management: Overlooking the point of PM inspections
october2021 - 49
october2021 - Diagnostics: Increase in electronics drives need for diagnostic tools
october2021 - 51
october2021 - Training: Inside the ASE test development process
october2021 - Fleet Parts & Components
october2021 - Tools & Equipment
october2021 - 55
october2021 - 56
october2021 - Classifieds
october2021 - Guest Editorial: Six steps to achieve zero shop accidents
october2021 - 59
october2021 - 60
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