Question about 1999 Mercury Sable

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1999 Sable LS, bought Autolite APP104 Double Platinum plugs. What should the gap be set at? Will this inprove gas mileage?

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The engine doesn't know what plug you have in it,so no. Gas milage actually will go down, as the vehicle gets older and carbons up,converter breaks down and sensors get worn.
If double platinum was the original factory plug,use that.
I will tell you that the tip on the Autolite Plugs, is not the same wire size or shape as the OE factory plug.
An NGK is a better choice,unless you have deep pocket and wish to go to the dealer parts counter for Motorcraft. They may be NGK anyway, mine had both names on them.

The gap, is on your radiator support and can be looked up on any plug mfg site.

Posted on Sep 29, 2010


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