Platinum vs Iridium Spark plugs

Heads, valves, pistons, rods, crankshaft, etc...

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thatsme87
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Posts: 55
Joined: Tue Oct 28, 2014 8:06 pm

Platinum vs Iridium Spark plugs

Post by thatsme87 »

I am redoing head gaskets timing belts and replacing the spark plugs on my 1998 subaru legacy outback 2.5l ej25 DOHC engine, and I am wondering what the best plugs to go with are I had run by and bought some NGK iridium spark plugs. But I got to thinking about it and started wondering if maybe I should of gone with the platinum ones instead? I pulled a plug out of my engine and It had autolite ap3924 platinum plugs in it, know I had run 100,000 miles on those plugs and they really are not in bad looking shape. Any suggestions
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James614
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Joined: Sun Jun 10, 2007 4:35 am
Location: Arkansas

Re: Platinum vs Iridium Spark plugs

Post by James614 »

Use the iridium's. They perform well and last just as long.
93 Touring Wagon (EJ20G 5spd Swap) -- Finally back and running strong as ever!

05 Outback 2.5XT 5spd -- Now the wife can have her SUV and get in on the turbo Legacy goodness at the same time.
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Brisky
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Joined: Sat Jan 28, 2012 8:52 am
Location: Kent, WA

Re: Platinum vs Iridium Spark plugs

Post by Brisky »

Iridium will have better performance than Platinum and last longer (100k miles or so).
Brian

2001 Legacy GT - Sedan - White - Manual

18inch TSW Wheels, Federal SS-595 Tires, Centriic Rotors, Stoptech Brake Pads, STi Exhaust, & Torque Solutions Shifter bushings
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