Are
platinum-tipped spark plugs worth the extra money? |
Dear
Tom
and
Ray:
I
would
like
to
know
the
information
you
have
on
platinum
tipped
spark
plugs.
Are
they
really
worth
their
weight
in
platinum?
I
have
an
'86
Chevy
S10
pickup
with
a
2.8
V6
and
98,000
miles.
I
was
thinking
about
putting
platinum
plugs
into
my
truck.
What
do
you
think
of
them?
Mel
Tom:
Here's
the
story,
Mel.
The
big
advantage
of
platinum
plugs
is
longevity.
They're
supposed
to
last
60,000-100,000
miles,
or
roughly
three
times
as
long
as
regular
plugs.
And
although
manufacturers
claim
that
platinum
plugs
improve
mileage
and
performance,
we've
never
seen
any
real
evidence
of
this.
Ray:
One
reason
they
exist
is
so
that
some
newer
cars
can
claim
to
not
need
a
tune
up
for
100,000
miles.
That's
a
nice
thing
to
be
able
to
tell
a
buyer
when
you're
trying
to
sell
a
car.
Tom:
The
second
reason
manufacturers
like
platinum
plugs
is
because
some
engines
are
wedged
into
cars
in
such
a
way
that
some
of
their
spark
plugs
are
extremely
hard
to
get
at.
And
if
the
customer
knew
that
it
was
going
to
cost
him
100
bucks
in
labor
just
to
change
the
spark
plugs
every
30,000
miles,
he
might
keep
his
old
Peugeot
a
couple
of
more
years.
So
platinum
plugs
eliminate
the
need
for
more
frequent
spark
plug
changes
on
cars
whose
plugs
are
difficult
to
reach.
Ray:
The
down
side
is
that
when
plugs
stay
in
an
engine
for
100,000
miles--which
can
easily
be
seven
years--they
tend
to
get
frozen
in
place,
and
can
be
nearly
impossible
to
remove.
Tom:
Of
course,
that
won't
be
much
of a
concern
for
you,
Mel,
because
you're
unlikely
to
get
another
100,000
miles
out
of
this
truck.
So
if
you
want
to
put
platinum
plugs
in,
go
for
it.
They'll
be
your
last
set
of
plugs,
no
matter
how
long
the
truck
lasts.
In
fact,
see
if
they'll
give
you
the
"weld
in"
kit
along
with
them.
Ray:
And
for
those
of
you
who
own
newer
cars
with
platinum
plugs,
our
recommendation
is
to
unscrew
them
(and
screw
them
back
in)
every
30,000
miles
or
so,
just
to
be
sure
they
don't
"become
one"
with
the
cylinder
head.
Tom:
Right.
Take
a
cue
from
my
brother's
wife.
She
changes
the
locks
on
their
house
and
makes
him
sleep
in
the
garage
every
few
months,
just
to
make
sure
that
plan
still
works.
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