If you've noticed cold spots on your radiator, it's likely due to sludge build-up, and if left untreated, it can reduce ...

The oil inside your car's engine can sludge up with neglect and infrequent oil changes. Sludge is a nasty contaminant that can destroy an engine if not given attention, but timely oil changes are a ...

If you've noticed cold spots on your radiator, it's a clear sign that something's not right with your central heating system due to sludge build-up ...

DETROIT, Jan 30 (Reuters) - Toyota Motor Corp. <7203.T> has agreed to settle a class action lawsuit that claimed oil sludge build-up damaged the engines of some Toyota and Lexus vehicles sold in the ...