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Reply to "Amsoil EAO vs PureONE"

Particle Count Data Point: P1 vs EaO
Ericm Offline


Registered: 02/21/05
Posts: 53
Loc: CA
Another particle count data point.
I ran a Pure One filter for 4000 miles. I pulled an oil sample, then changed to an EaO filter without adding any new oil. I ran the EaO for 549 more miles and pulled the second sample.

IMPORTANT NOTE: IT LOOKS AS IF THE EaO SAMPLE MAY HAVE BEEN MISTAKENLY CONTAMINATED WITH ADDTIONAL DIRT BASED ON A HIGH SILICON READING.
(More Details at end of post.)

Filter__P1___________EaO

Miles
on
Filter_4042___________549

Miles
On Oil_4042__________4591

Make up
Oil_____1.0 qt________none

Particle
Count
(microns)
>5u____17159_______19501
>10u_____427_________474
>15u______49__________60
>20u______20__________25
>25u______11__________15
>50u_______2___________2
>75u_______0___________0
>100u______0___________0

Fe
Debris_____15__________15

ISO______21/13_______21/13

Particle
Volume_____2__________2

Anti
Freeze____Pos*_______Trace*

Water_____Pos**_______Neg

Fuel_______Neg________Neg

Elements
PPM
Cu_____1____________1
Fe_____2____________2
Cr_____0____________0
Ni_____0____________0
Ti_____0____________0
V______0___________0
Ag_____0___________0
Pb_____4___________2
Sn_____3___________0
Al______2___________2
Si______5__________16
Na_____3___________5
K_______0___________0
Mo____118__________96
B_____109_________116
Ba______0___________2
Ca___1994________1856
Mg______0___________0
Mn______2___________2
P_____946_________898
Sb______2___________7
Zn___1093________1005

Viscosity: 16.0 cst
Oil type: Chevron Supreme 20w-50

* According to Butler Cat Lab the glycol test is extremely sensitive and may be a false positive.
** According to Lab the presence of water was low enough for a particle count to be taken. Water is counted as particles and will add to PC.

A laser type particle counter was used. (The lab did not dilute the samples for particle counting).

Vehicle is 1993 Geo Metro XFi. Total mileage at end of test was approx. 270,072.
Filters were extra large oversize: Purolator PL30001 and EaO 15.

Sampling procedure: Used rigid polyethylene tubing, otherwise the same as:
http://theoildrop.server101.co.../s...true#Post866529

I think dirt contamination was introduced into the EaO sample possibly during the filter change due to wind blown dust (it took a while to pour oil from P1 filter into the EaO).
I don’t think contamination occurred during sampling because I believe this would have raised the particle count of the larger particles in the 50, 75, and 100 micron range as well as the smaller sizes. It looks to me as though the EaO filter removed these larger sizes before sampling.

Sorry about that. I got impatient and changed over to the EaO filter on a windy afternoon. Should have waited for a calm weekend morning, when I normally change oil.

Comments welcome.
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