Sequence VID Test Method

The Sequence VID is an engine dynamometer test that measures a lubricant’s ability to improve the fuel economy of passenger cars and light-duty trucks

The lubricantfuel economy impact evaluation is provided by Intertek Automotive Research. The VID method compares the performance of a test lubricant to the performance of a baseline lubricant over six different stages of operation. A 2008 Cadillac SRX 3.6L High Feature (HF) V6, 4-cycle engine is used as the test apparatus. The engine incorporates Dual Overhead Camshafts, 4 Valves / Cylinder, Dual Stage Plenum Induction Manifold, 94x85.6mm Bore & Stroke, with 10.2:1 compression ratio.

The Sequence VID test incorporates a flush and run type procedure. Each test consists of two 6-stage fuel economy measurements on baseline oil (BL), one at the beginning of the test and one at the end. The test oil is evaluated in between the two baseline runs. The test oil is initially aged during 16 hours of engine operation at 2250 r/min and 120oC oil temperature. After the initial aging, a 6-stage fuel economy measurement is taken. The test oil is then aged an additional 84 hours at an engine speed of 2250 r/min and 120oC oil temperature. Following this final aging, the test oil once again goes through a 6-stage fuel economy measurement. The two fuel economy measurements taken on the baseline oil (BL) and a final value for Fuel Economy Improvement is calculated for the test oil.

Below is a summary of the operation conditions for the aging and 6-stage fuel economy portions of the test.

Fuel Economy Measurement and Aging Conditions

FE StageSpeed (r/min)Torque (N-m)Oil Temp. (°C)Coolant Temp. (°C)
12000105115109
2 2000 105 65 65
3 1500 105 115 109
4 695 20 115 109
5 695 20 35 35
6 695 40 115 109

Aging StageSpeed (r/min)Torque (N-m)Oil Temp. (°C)Coolant Temp. (°C)
1 & 22250110120110
 
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