Spark plug question

[Signatureseries]

Hi,
Please share your experiences Champion Spark Plug Platinum or Champion Spark Plug Double Platinum, which one is better and why ???
platinum cost $2.98 each part # 3401
Double platinum $4.77 each part # 7963

[rhandwor]

I use motorcraft or auto lite on my ford vehicles. The platinum is a 50'000 mile rated plug. The douple platinum is a 100,000 mile rated plug. It depends on how hard they are to change and how long you plan on keeping the vehicle.

[Signatureseries]

Thank you so much !

[[email protected]]

for my $ .02, i installed bosh +4's, @ 70, 000 miles, on my 96 T.C.
took every socket extension and u joint i had.
had to pull the fuel rail and plug coils, as they are on top of the plugs.
average time was 1/2 hr per plug. 8 plugs= 4hrs. but now it is done, and i am happy with the results.
this with my k +n air filter, and walmart full synthetic oil now results in 25.8 average m p g over the last 2800 miles.
previously it had been 24.0 m p g.
just my experience, lets see how u do
mike

[crazygolfer]

could my 96 town car need plugs it has 82000 miles but my gas mileage has dropped to 15mpg

[Towncar]

Originally Posted by crazygolfer

could my 96 town car need plugs it has 82000 miles but my gas mileage has dropped to 15mpg

I'm going to guess you'll need more than that. You should have also flushed the transmission twice before now, 35k/40k mile intervals.

Have you seen the Check Engine lamp lighted yet?