Pin and Vee block tests were conducted according to ASTM D3233. The test is a load to failure test that uses progressive loading on Vee blocks that squeeze a shaft rotating at 290 rpm. The test terminates when the shaft seizes and breaks a shear pin or the machine reaches its top loading of 3000 psi on the load pressure gauge. The test pieces are submerged in oil. This method tests the extreme pressure properties of the oil or additive. These tests were run starting at room temperature.

XP 1A5 oil showed a reduction of 47% in torque over the same viscosity oil with no additive.

Block on Ring tests were run per ASTM D2714. The test runs at 72 rpm, with a 100 lb normal load for 5000 cycles. The test is a line contact configuration. The size of the wear scar on the test block is measured. The specimen assembly is partially immersed in the lubricant sample during the test. This method tests the wear prevention properties of the oil.

XP 1A5 oil showed a reduction of 12% in wear over the same viscosity oil with no additives present.

Bearing Noise
Solid particles in grease cause bearing noise, and very large particles can lead to early failure of the bearing. Small bearings and electrical motor bearings are commonly plagued by noise.

The XP products with soluble additives minimize noise. Various greases were tested to show the effects of particles on noise level in bearings. Any readings above 25 on the low or high band is considered unacceptable for electric motor quality. Any amplitude greater than one grid on the oscilloscope is also unacceptable for electric motor quality.

Performance of the soluble additives in the XP line is superior to additives that are commonly used for anticorrosion protection in PFPE grease.

The corrosion prevention performance of oil with the soluble additive was tested against a PFPE oil with no additives using a modified version of ASTM D665. Cylindrical C-1018 steel coupons were cleaned and coated with oil. They were allowed to drip for 1 hr and then were placed into a water bath that was stirred and held at 80°C (176°F). They were examined at routine intervals for corrosion. The water for the test is a modified hard water that contains salts and minerals to simulate water that normally would be found in industrial applications and is somewhat corrosive and similar in action to saltwater.

An additional test was run with corrosion coupons in 80°C (176°F) agitated hard water for 5 weeks with no rusting visible.

Bearing corrosion prevention performance of grease with the soluble additive was tested against a PFPE grease with no additives and against a PFPE grease with standard anticorrosion additives using the IP-220 (EMCOR) test method. This method uses a double row self-aligning bearing that is packed with grease. It is a dynamic test that runs partially submerged in water for 8 hr, sits for 16 hr, is run again for 8 hr, sits for 16 hr, is run again for 8 hr, and is allowed to sit for an additional 108 hr, which gives a test time of one week. At this time, the bearing is disassembled, and the outer race is examined for rusting. The outer race is rated from 0–5 on a standard rating scale, with 0 having no corrosion and 5 having more than 10% of the surface covered with corrosion. The water for the test is a modified hard water that contains salts and minerals to simulate water that normally would be found in industrial applications and similar in corrosion action to saltwater.