Fleet Maintenance 1220 - 22

Viscosity 101
What the thickness of heavy duty
engine oil can mean for engine
operation and performance.
Engine oil viscosity is a measure of how
viscous, or thick, an oil is. The higher the
viscosity, the thicker it is. In other words,
SAE 40 is thicker than SAE 30. A higher-viscosity engine oil provides maximum
protection under full load. A lower-viscosity, more free-flowing oil provides for
easier starting in cold temperatures.
Multi-grade engine oils such as 15W-40
or 10W-30 help bridge the divide.
" Viscosity Index Improvers (VIIs) are used in
multi-grade engine oils to help minimize the
effect of temperature on lubricant viscosity, "
says Darryl Purificati, OEM technical liaison at
Petro-Canada Lubricants. " VIIs help reduce oil
viscosity thinning effects at high temperatures
to maintain sufficient boundary lubrication
and protection of vital engine components. "
" VIIs are used to deliver the desired viscosity profile between 40 and 100 degrees
Celsius that base oil cannot deliver, " says
James Booth, commercial sector manager at
Chevron. " However, with the improvement
in base oil quality, the relative importance
of VIIs has somewhat diminished. "

		»Choosing the right oil depends on the complexion of the fleet and the maintenance
operation's ability to manage multiple engine oils in the shop.
Photo courtesy of Shell

second oil. But if the shop isn't very disciplined in
how it handles its maintenance with documentation and labeling, that's a major obstacle. "

Oil management best
practices for the shop
The TMC RP under development aims to help
fleets go through the thought process of how to
effectively transition to FA-4 oil. If a fleet walks
through the decision tree and concludes that it's
time to begin transitioning to FA-4, the TMC RP
provides guidance on implementation. " Here we
talk about labeling, training, and working with oil

Clean your facility or inside
the truck before you disinfect

suppliers to make sure everybody is on the same
page, " ExxonMobil's Cigala says.
Everything starts with training. Cigala says a
typical " toolbox meeting " is an ideal venue. The
fleet manager can make it clear to every technician that the transition is underway, along with
the steps being taken to ensure a successful implementation. It may be possible to designate a single
bay or two for vehicles capable of accepting an FA-4
engine oil. If FA-4 will be utilized throughout the
shop, it's important to label all tanks, dispensers,
and hose reels.
Fleets should spend time thinking about oil
storage. As Petro-Canada's Purificati points
out, adding a couple new engine oils to the shop

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22 Fleet Maintenance | December 2020

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Fleet Maintenance 1220

Table of Contents for the Digital Edition of Fleet Maintenance 1220

Uptime
Editor's Note
Friction fit, form, and function
Keys to successful engine oil management
2020 product attributes report card
Making sense of active safety systems
The power of PTOs
Leaders and heroes of fleet maintenance
New Avenues for technician recruitment
The future of heavy duty diagnostics
Fleet parts & components
Tools & equipment
Classifieds
How Fleets can finish the year stronger than ever
Fleet Maintenance 1220 - 1
Fleet Maintenance 1220 - 2
Fleet Maintenance 1220 - 3
Fleet Maintenance 1220 - 4
Fleet Maintenance 1220 - 5
Fleet Maintenance 1220 - 6
Fleet Maintenance 1220 - 7
Fleet Maintenance 1220 - Uptime
Fleet Maintenance 1220 - 9
Fleet Maintenance 1220 - Editor's Note
Fleet Maintenance 1220 - 11
Fleet Maintenance 1220 - 12
Fleet Maintenance 1220 - 13
Fleet Maintenance 1220 - Friction fit, form, and function
Fleet Maintenance 1220 - 15
Fleet Maintenance 1220 - 16
Fleet Maintenance 1220 - 17
Fleet Maintenance 1220 - Keys to successful engine oil management
Fleet Maintenance 1220 - 19
Fleet Maintenance 1220 - 20
Fleet Maintenance 1220 - 21
Fleet Maintenance 1220 - 22
Fleet Maintenance 1220 - 23
Fleet Maintenance 1220 - 2020 product attributes report card
Fleet Maintenance 1220 - 25
Fleet Maintenance 1220 - 26
Fleet Maintenance 1220 - 27
Fleet Maintenance 1220 - 28
Fleet Maintenance 1220 - 29
Fleet Maintenance 1220 - 30
Fleet Maintenance 1220 - 31
Fleet Maintenance 1220 - Making sense of active safety systems
Fleet Maintenance 1220 - 33
Fleet Maintenance 1220 - 34
Fleet Maintenance 1220 - 35
Fleet Maintenance 1220 - The power of PTOs
Fleet Maintenance 1220 - 37
Fleet Maintenance 1220 - 38
Fleet Maintenance 1220 - 39
Fleet Maintenance 1220 - Leaders and heroes of fleet maintenance
Fleet Maintenance 1220 - 41
Fleet Maintenance 1220 - New Avenues for technician recruitment
Fleet Maintenance 1220 - 43
Fleet Maintenance 1220 - The future of heavy duty diagnostics
Fleet Maintenance 1220 - 45
Fleet Maintenance 1220 - Fleet parts & components
Fleet Maintenance 1220 - 47
Fleet Maintenance 1220 - Tools & equipment
Fleet Maintenance 1220 - Classifieds
Fleet Maintenance 1220 - How Fleets can finish the year stronger than ever
Fleet Maintenance 1220 - 51
Fleet Maintenance 1220 - 52
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