Spark plugs? 6240 or 4469?
#1
Spark plugs? 6240 or 4469?
2002 maxima GLE 3.5l*
About 120k miles on it bought it used with maybe 30-40k.
I use this car as my daily driver, 60 mile commute to and from work daily.*
So obviously it's time to change the spark plugs. I pulled one out and it's part number Plfr5a (6240). Wondering if I should buy the same or get the iridium's lfr5aix-11 (4469). And what do u guys suggest I gap them at? And while the intake manifold is off is there any other things I should replace? I read on here that valve covers on these engines leak, I need to take a closer look but I don't think I have that problem just very minor oil build up around the gasket. And whats the deal with these engines burning oil?
About 120k miles on it bought it used with maybe 30-40k.
I use this car as my daily driver, 60 mile commute to and from work daily.*
So obviously it's time to change the spark plugs. I pulled one out and it's part number Plfr5a (6240). Wondering if I should buy the same or get the iridium's lfr5aix-11 (4469). And what do u guys suggest I gap them at? And while the intake manifold is off is there any other things I should replace? I read on here that valve covers on these engines leak, I need to take a closer look but I don't think I have that problem just very minor oil build up around the gasket. And whats the deal with these engines burning oil?
#2
I would get the platinum plugs, PLFR5A. That is the one Nissan recommends. Iridium plugs will last a little longer, but have a down side that may not even be worth considering. Iridium is a harder metal than platinum, which is why it lasts longer. But it also is a poorer conductor of electricity, requiring you to have a stronger ignition coil. Our ignition coils are pretty powerful, so for a dd, it probably makes no real difference.
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