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Recent Tests SL + PLUS?
Table 1 SRV Machine Method A
Blend
Coefficient of Friction
Wear
Appearance/Comments
Min/max
Plate/Cylinder
Engine Oil
0.155µ/0.193µ
1.42µm/0.28mm
Oil with flaky abrasive
20% CET(1)
0.168µ/0.194µ
1.39µm/0.30mm
Some flaky abrasive
10% SL+PLUS (2)
0.112µ/0.163µ
1.42µm/0.40mm
Almost non-abrasive
Table 2 SRV Machine Method B
Blend
Coefficient of Friction
Wear
Appearance/Comments
Min/max
Plate/Cylinder
Engine Oil
0.150µ/0.157µ
0.64µm/0.17mm
No abrasion
20% CET(1)
0.148µ/0.160µ
0.58µm/0.25mm
No abrasion
10% SL+ PLUS (2)
0.113µ/0.124µ
0.65µm/0.25mm
No abrasion
Table 3 Falex & 4-Ball Wear
Blend
Falex EP, lb
4-Ball EP, kg
Engine Oil
1000
250
20% CET(1)
750
200
10% SL+PLUS (2)
3000
315
Notes:
SRV Method A
(Steel/Aluminum) steel cylinder 100 CR 6 (AISI 52100), 15mm X 11mm ALSI plate; 50 Hz, load 50N, 100º C, amplitude 2mm, test duration 30 min.
SRV Method B
(Steel/Steel) steel cylinder 100 CR 6 (AISI 52100), 15mm X 11mm plate 100 CR 6 (AISI 52100); 50 Hz, load 50N, 100º C, amplitude 2mm, test duration 30 min.
Engine Oil
major brand 10W-30 API SJ engine oil
CET
Nationally available chlorinated-paraffin based engine treatment additive
(1)
percent by weight of CET in Engine Oil
(2)
percent by weight of SL PLUS+ in Engine Oil
Description:
SL+PLUSä is a chlorine free oil treatment designed for engine treatment for Extended Protection and anti-wear enhancement.
Applications:
SL+PLUSä is an oil soluble treatment for extreme presoiled automotive and truck engine oils.
Advantages:
SL+PLUSä has no chlorine. Chlorinated compounds in the engine in contact with moisture and in the presence of trace soluble metals and high temperatures will create hydrochloric acid. As a result, serious corrosion problems develop.
SL+PLUSä is free of solids. Use of solids (graphite, molybdenum disulfide or PTFE/Teflon ) suspended in oil is used to enhance lubricity but avoid corrosion problems of chlorine. The use of these chemicals can be inconsistent because the flow of solids is dependent solely upon mechanical means; protection is difficult to control since there is no uniform chemical reaction.
SL+PLUSä contains no phosphorous which can contaminate the catalytic converter.
SL+PLUSä prevents wear, has extreme pressure properties (EP) and reduces friction. These properties provide possible increased engine life, lower valve train wear and improved fuel economy. (see Tables 1, 2 and 3 on the reverse.)
SL+PLUSä formulation follows the ?Policy Guidelines for Use of Aftermarket Fuel and Lubricant Additives? issued May, 1996 by the Defense Department. The policy has two objectives: 1) the candidate product must deliver a measurable improvement and, 2) the presence of the candidate product must not cause any adverse side effects (corrosion, additive separation, etc.).