My marine mechanic recently told me not to use platinum plugs in my boat
(Volvo Penta 5.7 raw water cooled). He says that they run too cool and tend
to get fouled as a result.

What is everyone's opinion on this? Has anyone experienced problems with
platinum plugs??

Platinum come in both hot, cold , and normal heat range plugs for your
volvo.

Jack
"Frank Taylor, Jr." wrote in message
...
My marine mechanic recently told me not to use platinum plugs in my boat
(Volvo Penta 5.7 raw water cooled). He says that they run too cool and
tend
to get fouled as a result.

What is everyone's opinion on this? Has anyone experienced problems with
platinum plugs??

Jack Rye wrote:

Platinum come in both hot, cold , and normal heat range plugs for your
volvo.

That's a fact, but I doubt the economics of using such expensive plugs
is such a mundane application; sort of like using premium gas in a car
designed for regular.

Lead free gas has extended life of plugs so much that it doesn't really
matter what you pay for them.


"Vito" wrote in message
...
Jack Rye wrote:

Platinum come in both hot, cold , and normal heat range plugs for your
volvo.

That's a fact, but I doubt the economics of using such expensive plugs
is such a mundane application; sort of like using premium gas in a car
designed for regular.

Obviously somebody doesn't know that else this thread wouldn't exist.
surfnturf wrote:

Lead free gas has extended life of plugs so much that it doesn't really
matter what you pay for them.

"Vito" wrote in message
...
Jack Rye wrote:

Platinum come in both hot, cold , and normal heat range plugs for your
volvo.

That's a fact, but I doubt the economics of using such expensive plugs
is such a mundane application; sort of like using premium gas in a car
designed for regular.

Wonder why various car manufacturers include platinum plugs in their
vehicles even though they were designed from day 1 to run on unleaded? I
suspect there is a difference.

"Vito" wrote in message
...
Obviously somebody doesn't know that else this thread wouldn't exist.
surfnturf wrote:

Lead free gas has extended life of plugs so much that it doesn't really
matter what you pay for them.

"Vito" wrote in message
...
Jack Rye wrote:

Platinum come in both hot, cold , and normal heat range plugs for
your
volvo.

That's a fact, but I doubt the economics of using such expensive plugs
is such a mundane application; sort of like using premium gas in a car
designed for regular.

In my case, the reason I would like to use platinum plugs is because they
last a lot longer and do not have to be re-gapped like normal plugs do.

For me, it is not a matter of cost, but I figure the less I have to replace
or regap them, the more time I have out on the water.


"Frank Taylor, Jr." wrote in message
...
My marine mechanic recently told me not to use platinum plugs in my boat
(Volvo Penta 5.7 raw water cooled). He says that they run too cool and
tend
to get fouled as a result.

What is everyone's opinion on this? Has anyone experienced problems with
platinum plugs??

"Frank Taylor, Jr." wrote:

In my case, the reason I would like to use platinum plugs is because they
last a lot longer and do not have to be re-gapped like normal plugs do.


I'm surprised that's true. The standard plugs in my cars and street
bikes last 50,000 miles - forever AFAIK. We used platinum plugs in very
high output engines (150-200 HP/Liter) because ND and NGK gave them away
by the handful so they could advertise that winners used their plugs,
but I never saw any numerical evidence they improved performance or
lasted longer - not saying they don't just that I never saw it demo'd.
Naturally YMMV.

I don't think platinum plugs improve performance or economy but they
definitely last longer. Also, while normal plugs can last 50k miles, after
10 or 15k, the gaps begin to increase because the electrode wears down and
this can affect performance or economy. This is why people talk about
pulling their plugs and re-gapping them.

Platinum plug electrodes do not wear like normal plugs and you don't have
that problem. I routinely, keep platinum plug in my truck for 100k or
longer.


"Vito" wrote in message
...
"Frank Taylor, Jr." wrote:

In my case, the reason I would like to use platinum plugs is because
they
last a lot longer and do not have to be re-gapped like normal plugs do.


I'm surprised that's true. The standard plugs in my cars and street
bikes last 50,000 miles - forever AFAIK. We used platinum plugs in very
high output engines (150-200 HP/Liter) because ND and NGK gave them away
by the handful so they could advertise that winners used their plugs,
but I never saw any numerical evidence they improved performance or
lasted longer - not saying they don't just that I never saw it demo'd.
Naturally YMMV.