|
GM Scroll Compressor (Mitsubishi)
Durability Field Test
Two (2) Chevrolet Venture vans with Mitsubishi Scroll Compressors Compared
The selected vans were part of the fleet of a major air conditioning manufacturing company. One van was a 2002 model driven by a member of the training staff, and had ICE 32 added to the system when the van had logged 3500 original miles. The second van was a 2003 model and was driven by a company salesman in the Northeast region of the U.S.
Each system was performing normally when the compressors were removed and disassembled for analysis. The chart below details the differences in trace metal content of the lubricants removed from each system. The following pages show the major contact surfaces, and the differences in the wear patterns between each system (treated vs. untreated).
Oil Analysis of Mitsubishi Scroll Compressors
Oil drained from each scroll compressor was analyzed at Texas Oil Tech Laboratories for wear metals and the following results were found:
|
|
ELEMENT
|
FACTORY
LUBRICANT Mileage - 29,500
|
FACTORY
LUBRICANT
w/ ICE 32 Mileage
- 24,869
|
DIFFERENCES
|
|
Fe
|
Iron
|
11.1
ppm
|
1.2
ppm
|
89%
Less
|
|
Cu
|
Copper
|
11.3
ppm
|
1.1
ppm
|
91%
Less
|
|
Al
|
Aluminum
|
1.2
ppm
|
<
1 ppm
|
65%
Less
|
|
Sn
|
Tin
|
14.5
ppm
|
6.2
ppm
|
43%
Less
|
|
Si
|
Silicon
|
9.3
ppm
|
7.5
ppm
|
26%
Less
|
|
Na
|
Sodium
|
1.4
ppm
|
2.6
ppm
|
47%
More
|
|
P
|
Phosphorus
|
1533
ppm
|
2129
ppm
|
28%
More
|
|
Zn
|
Zinc
|
11.4
ppm
|
2.4
ppm
|
79%
Less
|
|
K
|
Potassium
|
1.3
ppm
|
2.8
ppm
|
54%
More
|
All other elements tested (12) displayed less than 1
ppm with factory lubricant and with the ICE 32 treatment.
Other
GM Scroll Compressor Tests
* GM Scroll Compressor (Mitsubishi) Durability Field Test
* GM Scroll Compressor (Mitsubishi)
Thrust Bearing Surfaces
* GM Scroll Compressor (Mitsubishi) Shaft Driver
|
