They (Blackstone) said "clean for a 5w-40" ..whatever that means
ISO Particle Count: 17/16/13,
Particles were:
>2 micron = 1,666,
>5 mu = 617 mu,
>10mu = 170,
>15 mu = 66,
>25 mu = 15,
>50 mu = 1,
>100 mu = 0.
ISO International Standards Organization Particle Count Classification
ISO Class Number of Particles per 100 ML
1 0 - 2
2 2 - 4
3 4 - 8
4 8 - 16
5 16 - 32
6 32 - 64
7 64 - 130
8 130 - 250
9 250 - 500
10 500 - 1000
11 1000 - 2000
12 2000 - 4000
13 4000 - 8000
14 8000 - 16,000
15 16,000 - 32,000
16 32,000 - 64,000
17 64,000 - 130,000
18 130,000 - 250,000
19 250,000 - 500,000
20 500,000 - 1,000,000
21 1,000,000 - 2,000,000
22 2,000,000 - 4,000,000
23 4,000,000 - 8,000 000
24 8,000,000 - 16,000,000
25 16,000,000 - 32,000,000
26 32,000,000 - 64,000,000
No matter how I try and put the 17/16/13 over any 3 consecutive particle readings, in any muliple (x.1, etc.) I don't get where they're coming from