engine sludge

engine sludge

[′en·jən ‚sləj]
(engineering)
The insoluble products of degradation of lubricating oils and fuels formed during the operation of an internal combustion engine.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
End of test engine inspections were performed and the average engine sludge data are shown in Figure 11.
RAY: First of all, while denatured alcohol is a solvent, we have no idea whether it does anything to remove engine sludge.
* Check for engine sludge or severe varnish buildup.
In addition, the coatings also reduce engine sludge build-up, allowing the engine to maintain balance for more horsepower.
Diesels suffer from the problem of soot build-up to a greater extent than petrol engines and so the oil you put in the sump needs to have greater soot handling abilities to prevent the build-up of engine sludge.