Field Performance of SAE 15W-40 Multigrade Oils in DDA 8V-92 Engines Using Current and New Piston Fire Rings 870402
Chevron Research Company and Detroit Diesel Allison (DDA) conducted a cooperative field test to determine the performance of SAE 15W-40 multigrade oils in two-cycle engines.
The field test utilized 42 new 8V-92TA engines in new Kenworth trucks. A unique aspect of this field test was that all the engines had premeasured piston rings and cylinder liners. The latest DDA fire ring designs were also incorporated.
There are three significant conclusions:
Grooveless fire rings provided 35% lower wear than the current grooved design.
Citation: McGeehan, J. and Painter, L., "Field Performance of SAE 15W-40 Multigrade Oils in DDA 8V-92 Engines Using Current and New Piston Fire Rings," SAE Technical Paper 870402, 1987, https://doi.org/10.4271/870402. Download Citation
J. A. McGeehan, L. J. Painter
Chevron Research Company Richmond, California
SAE International Congress and Exposition
SAE 1987 transactions: Fuels and Lubricants-V96-7