Poxhall keep nagging me to replace the spark plugs in the v8.... Its 5 years old and only done 23k...i reckon they have a good few years left before I change them for cooler running ones(which I will have fitted when I get the walkinshaw camshaft

 

I dont think it needs em. My BM isnt due any yet, 6 and 27k

 

Iridium last longer than the platinum, but 23k is early on both, especially on a low revving engine.

 

Thanks guys...thought as much.

 

They're changed at 100K on my Jag (4.2 V8). Don't know what the time would be but assuming ave miles of 12,000pa I'd have thought 8yrs/100K would be about right.

 

I cant afford more than 5k a year