I have a 1998 Windstar 3.8, Double Platinums are not stock or required for this vehicle. Motorcraft #SP-486 is the stock plug and it is Platinum, not double platinum.
I see 22 different types of plugs you can put in this vehicle and only ONE specified stock and it is the Motorcraft #SP-486.
100,000 miles for a plug to last is not long enough for you, double platinums wont last any longer.
Platinum plugs run hot, double platinum runs even hotter.
Quote:
Originally Posted by CraigRK  Thanks for your response.
Several tens of thousands of km's ago, I replaced the original plugs with the specified Autolite APP765's (double platiums). Ran great for many, many miles. The very recent change was to Autolite APP105's which are also specified for this vehicle, and are a replacement for the APP765's (although that replacement by Autolite is somewhat suspect). I went with double platinums purely for longevity reasons, especially given the PITA to change the plugs on the far side. The APP765 plugs that came out looked A-OK, and with just the plug replacement, there was really no detectable difference. I really don't think the issue is plugs, but hell, if throwing in a set of 6 $2 plugs might solve the problem, I'll give it a try this weekend. |
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1998 Windstar GL 3.8L
1998 Explorer XLT 4.0L SOHC
2001 Corvette 6 speed 5.7L
