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PCV "catch can"
no engine should ever need a PCV Catch can , if yours does , that is one indication that your engine has bad piston rings
or
the piston rings may just be frozen with carbon in the lands because the engine has been operated with
poor quality oil for many moons
so
stop using poor quality oil , now
identify the problem and repair it , which will
improve your fuel economy and make the use of a PCV Catch can
UN necessary / irrelevant
K&N air filters
do not filter the air and do not improve fuel economy , as per 2 tests by the EPA and at least 1 test in IATN
all in all K&N air filters are a terrible thing to use , so
switch to an OEM type filter
yesterday , for best results .
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