Ever-evolving emissions rules have resulted in several significant shifts in car design, although this is far from a new phenomenon. Regulators have been looking for ways to make cars more ...

Improper blow-by control can lead to oily breather and valve covers. Is improper control of blow-by gases in your crankcase causing problems in your engine? If any of these questions below sound ...

Imagine one day, years ago, in some equipment shed out in Middle America, an innovative farmer looking at oil dripping from the bottom of the well-seasoned 5.9L Cummins engine in his Dodge Ram pickup ...

The Freelander 1’s BMW-sourced four-cylinder Td4 diesel engine is a simple motor to service yourself, as we saw in our service guide last month. In many ways, the top-mounted oil filter and the easily ...

Venting a typical V-8 engine isn't a complex affair. A breather atop each valve cover is usually all that's needed. Of course, replacing one with a PCV valve to introduce a bit of vacuum into the ...

Every engine has some sort of crankcase breathing system. The internal combustion process creates pressure, some of which makes its way past the piston rings-along with fuel vapors-and into the rest ...