ISO 4406 Contamination Chart

Studies have shown that for each grade the ISO code is lowered, the life of a hydraulic component can be doubled or tripled!

As shown in the chart, new oil is rated at approximately 18/15. With the Kleenoil Filtration System, oil will attain an ISO 4406 standard of less than 14/11.

Table of ISO 4406 Particle Counts
Kleenoil Recommends the Kleenoil Heavy Duty Filtration Unit for Trucking Fleets
  ISO Code Number of Particles per 1ml < 5 Micron in Size Number of Particles per 1ml > 15 Micron in Size
  23/20
23/19
23/18
23/17		 40,000 - 80,000
40,000 - 80,000
40,000 - 80,000
40,000 - 80,000		 5,120 - 10,400
2,560 - 5,200
1,280 - 2,600
640 - 1,300
  22/19
22/18
22/17
22/16		 20,000 - 40,000
20,000 - 40,000
20,000 - 40,000
20,000 - 40,000		 2,560 - 5,200
1,280 - 2,600
640 - 1,300
320 - 640
  21/18
21/17
21/16
21/15		 10,000 - 20,000
10,000 - 20,000
10,000 - 20,000
10,000 - 20,000		 1,280 - 2,600
640 - 1,300
320 - 640
160 - 320
  20/17
20/16
20/15
20/14		 5,000 - 10,000
5,000 - 10,000
5,000 - 10,000
5,000 - 10,000
 640 - 1,300
320 - 640
160 - 320
80 - 160
  19/16
19/15
19/14
19/13		 2,500 - 5,000
2,500 - 5,000
2,500 - 5,000
2,500 - 5,000		 320 - 640
160 - 320
80 - 160
40 - 80
Approximate New Oil 18/15
18/14
18/13
18/12		 1,300 - 2,500
1,300 - 2,500
1,300 - 2,500
1,300 - 2,500		 160 - 320
80 - 160
40 - 80
20 - 40
  17/14
17/13
17/12
17/11		 640 - 1,300
640 - 1,300
640 - 1,300
640 - 1,300		 80 - 160
40 - 80
20 - 40
10 - 20
  16/13
16/12
16/11
16/10		 320 - 640
320 - 640
320 - 640
320 - 640		 40 - 80
20 - 40
10 - 20
5 - 10
  15/12
15/11
15/10
15/9		 160 - 320
160 - 320
160 - 320
160 - 320		 20 - 40
10 - 20
5 - 10
2.5 - 5
Kleenoil Bypass Filter Range 14/11
14/10
14/9
14/8		 80 - 160
80 - 160
80 - 160
80 - 160		 10 - 20
5 - 10
2.5 - 5
1.3 - 2.5
  13/10
13/9
13/8
13/7		 40 - 80
40 - 80
40 - 80
40 - 80		 5 - 10
2.5 - 5
1.3 - 2.5
0.6 - 1.3
  12/9
12/8
12/7
12/6		 20 - 40
20 - 40
20 - 40
20 - 40		 2.5 - 5
1.3 - 2.5
0.6 - 1.3
0.3 - 0.6