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By pass
valve
Maintains an appropriate
oil flow at all times, and opens only when
clogging occurs
Elements (2-layer filter paper)
Removes dust completely, and prevents clogging.
The material is thick and more durable
Check valve and valve spring
The high spring pressure virtually eliminates
back-flow of oil.
Genuine Toyota oil filters are designed
to ensure that the amount of oil supplied
to the engine is appropriate for the engine
type and size
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-
By pass
valve
Provides low oil flow only, and allow
dirty oil to reach the engine after
clogging occurs
-
Elements
(1-layer filter paper)
The filtering material is quite
dense. It
removes dust but causes clogging very
quickly. The material is thin and breaks
more easily.
-
Check
valve and valve spring
Spring pressure is only half that of
genuine part, and cannot prevent oil
back flow
Using non-genuine parts.
A bad element causes clogging, which
will lead to engine seizure and other
problems
Engine oil becomes dirty faster, necessitating
frequent replacement
It passes on dirty oil to the engine
and wears out the engine faster
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