Excalibur spark plugs

[Fonseca]

Hi everybody.
Another question from Portugal:
What do you think about conventional spark plugs and platinum ones?
In the boat manual they recommends AcDelco conventional spark plugs, costing 2$ each. The platinum is ten times more expensive.
Do we get any advantage in using it?

[TRBenj]

RE: Excalibur spark plugs

Platinum plugs can last a lot longer than conventional plugs- which is great for longer service intervals. However, performance will be just as good, if not better, with the standard plugs- they just need to be replaced sooner.

[nautielove]

what is the interval between plug changes ?

[nms1991]

On the excalibur engine the platinum plugs are already installed by the factory. Pcm said you should not have to replace plugs on this engine unless there is a problem like leaking injector or oil fouling or a ignition problem.

[aaron]

I have had 600 hrs on the engine with the original plugs and the Excalibur still doesnt miss a beat, apart from some fuel pump and relay issues.