Engine too hot: Remember that the formation of sludge inside the engine prevents the heat from getting out of it?

I have a 2005 VZ Commodore SV6 with sludge build up in the engine. It has caused a lifter to stick. What is the best way to flush/clean the engine? If you have been servicing your car regularly, ...

Here are step-by-step pictures of how to clean an engine. Note: Keep in mind that it is illegal to dump untreated wastewater into sewer gutters.

While this procedure may clean some sludge inside the engine, I have my doubts about its appropriateness and effectiveness.

While this procedure may clean some sludge inside the engine, I have my doubts about its appropriateness and effectiveness.

TOM: We work on Volvos that develop sludge problems sometimes. What happens is that the crankcase ventilation system gets plugged up and doesn't allow oil fumes to be purged from the engine. So ...

A mechanic working on a 2018 Ford Edge warns about engine sludge and explains why the recommended oil service intervals may be the cause.