MACS Monthly Newsletter - 2017 - OCT2

Steve Schaeber
Figure 1: Most aftermarket information services simply cut and paste factory data into their systems, giving shops and technicians an affordable source
for "all makes and all models." But sometimes not all the information makes it into each system, making it necessary to check more than one.

which is simply way too much (most of the time, 7
ounces of oil is the amount you're going to use in
a system that takes about 28 ounces of refrigerant).
This is especially true considering the compressor
has an oil separator. Oil charge amounts for these
systems are often very low, perhaps in the 2, 3, or
4-ounce range. In fact, just saying the words oil separator will make some tech support guys comment,
"Oh, that's a low oil charge system." Likewise, if
looking up an oil charge spec shows a rather low
number (somewhere in the range stated above),
that's a good indication that an oil separator is involved.
Now the frustration is starting to build, and so
we continue to dig further by checking the factory

Steve Schaeber

Clicking on Refrigerant Oil and then Capacity Specifications, we find a chart listing how much oil goes
into individual components. See Figure 1.
As the chart shows, the technician should put in
10ml of SP-10 oil for the dryer, along with 80-90ml
for the compressor. But this shop also flushed out
the system, so we need to know the spec for total oil
charge amount, and not just for individual components.
You might be thinking that adding up all the
numbers will give you the total, and if we do this
we get 210mL (7.1 ounces). But that seems like
it's way too much oil for a system of this size. With
16.4 ounces as the median refrigerant charge, that
would make 7.1 ounces of oil about 43% of the total,

Figure 2: Honda's factory information is similar to Alldata, but they word things just a little bit differently (and who knows how much is 5/6ths of an ounce,
anyway???). At this point, we still don't know what the total correct oil charge is for this system.

October 2017

2

MACS Service Reports



Table of Contents for the Digital Edition of MACS Monthly Newsletter - 2017

MACS Monthly Newsletter - 2017 - JAN1
MACS Monthly Newsletter - 2017 - JAN2
MACS Monthly Newsletter - 2017 - JAN3
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MACS Monthly Newsletter - 2017 - FEB1
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MACS Monthly Newsletter - 2017 - MAR1
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MACS Monthly Newsletter - 2017 - APR1
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MACS Monthly Newsletter - 2017 - MAY1
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MACS Monthly Newsletter - 2017 - JUN1
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MACS Monthly Newsletter - 2017 - JUN8
MACS Monthly Newsletter - 2017 - JUL1
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MACS Monthly Newsletter - 2017 - JUL3
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MACS Monthly Newsletter - 2017 - JUL5
MACS Monthly Newsletter - 2017 - JUL6
MACS Monthly Newsletter - 2017 - JUL7
MACS Monthly Newsletter - 2017 - JUL8
MACS Monthly Newsletter - 2017 - AUG1
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MACS Monthly Newsletter - 2017 - AUG3
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MACS Monthly Newsletter - 2017 - AUG5
MACS Monthly Newsletter - 2017 - AUG6
MACS Monthly Newsletter - 2017 - AUG7
MACS Monthly Newsletter - 2017 - AUG8
MACS Monthly Newsletter - 2017 - SEP1
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MACS Monthly Newsletter - 2017 - SEP3
MACS Monthly Newsletter - 2017 - SEP4
MACS Monthly Newsletter - 2017 - SEP5
MACS Monthly Newsletter - 2017 - SEP6
MACS Monthly Newsletter - 2017 - SEP7
MACS Monthly Newsletter - 2017 - SEP8
MACS Monthly Newsletter - 2017 - OCT1
MACS Monthly Newsletter - 2017 - OCT2
MACS Monthly Newsletter - 2017 - OCT3
MACS Monthly Newsletter - 2017 - OCT4
MACS Monthly Newsletter - 2017 - OCT5
MACS Monthly Newsletter - 2017 - OCT6
MACS Monthly Newsletter - 2017 - OCT7
MACS Monthly Newsletter - 2017 - OCT8
MACS Monthly Newsletter - 2017 - NOV1
MACS Monthly Newsletter - 2017 - NOV2
MACS Monthly Newsletter - 2017 - NOV3
MACS Monthly Newsletter - 2017 - NOV4
MACS Monthly Newsletter - 2017 - NOV5
MACS Monthly Newsletter - 2017 - NOV6
MACS Monthly Newsletter - 2017 - NOV7
MACS Monthly Newsletter - 2017 - NOV8
MACS Monthly Newsletter - 2017 - DEC1
MACS Monthly Newsletter - 2017 - DEC2
MACS Monthly Newsletter - 2017 - DEC3
MACS Monthly Newsletter - 2017 - DEC4
MACS Monthly Newsletter - 2017 - DEC5
MACS Monthly Newsletter - 2017 - DEC6
MACS Monthly Newsletter - 2017 - DEC7
MACS Monthly Newsletter - 2017 - DEC8
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