Autolite Plugs and Wires for Tuneup

My '01 LeSabre is only averaging 22mpg, and I drive 70-80% highway, so I figure it probably needs a tune-up.

I plan to get the Autolite Ignition Double Platinum plugs and the Autolite Ignition Professional Series plug-wire set.

Anyone have any experiences or comments for this combo?

Also, I can't see the 3 plugs at the back of the engine. Is this a sign that it might be a little difficult to get to these?
Or maybe I just need a better light? :)

Thanks,

Phil

The rear bank spark plugs are there just difficult to get to and remove. Better lighting would help and the right tools.

I would recommend staying with AC Delco Platinum or Iridium spark plugs and the AC Delco Premium 7mm Silicone wires. Typically, AC Delco wires have the least resistance per foot at around 500 ohms. I am not sure about the Autolite Professional Series wires.

I have heard of people having problems with Double Platinum plugs of any brand, especially Bosch. The regular Autolite Platinums such as AP 606/605 work fine in a SII 3800 and are inexpensive.

The easy way to get to the back plugs is to take a tire off and reach from the side. Learned it from the auto professor at the college after I complaned how hard it was.

I've found that taking off the brace that runs between the shock towers is very helpful. Then I use a 4 in extension and a long flexible ratchet. The hardest thing is getting them back in, you just have to feel around. Make sure you put anti-seize on the threads and grease up the inside of the spark plug boots with silicone grease.