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.

References in periodicals archive ?

RAY: First of all, while denatured alcohol is a solvent, we have no idea whether it does anything to remove engine sludge.

Additive doesn't remove sludge

* Check for engine sludge or severe varnish buildup.

Buy a worry-free used car

In addition, the coatings also reduce engine sludge build-up, allowing the engine to maintain balance for more horsepower.

Diamonex introduces DLC coatings

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.

Getting the best out of your diesel; Diesel cars are proving extremely popular, not only out-stripping their petrol rivals in sales but also beating them at the race track too. STEVE WALKER advises owners on caring for their diesels