sam1947 thanks for the update very glad that they are working out for you.

 

The E3.70 is a Nickel plated copper core. What is the plug change intervals compared with a MC SP 515 which is double platinum? Any chance that the E3.70 plugs will come in a platinum variety some day?

 

About to bite the bullet on some e3.70 plugs. Summit has them for 9.95 a piece which is cheaper than motorcraft replacements.

I have a 2007 5.4l 3v motor. This is the correct plug for my truck right?

 

Correct !! over 5000 mi on my E3s and so far..NO PROBLEMS at all

 

Great! Keep us posted! I am heavily considering these plugs when I change out the originals!.....

 

X-2 thanks for update glad to hear no problems.

 

Alright I am ordering them from Summit along with the LISLE Spark Plug removal tool. They have the tool for 79.95. Does anybody know of anywhere cheaper?

Hopefully I will not need to use the tool and can just return it to summit.

 

Mr. Sam1947
It has been some time on these plugs is there a update?
still running them?
Any issues?

 

I am interested as well.

 

Check post #79

 

Well, I think you have talked me into it!! I want to ponder on it for a little wile longer... i have 50k now, looking to do it rather soon though..

 

That's great news... Have you noticed any changes with the plugs.. As far as the better mpg's that they claim

 

Hey guys just wondering if yall think a truck with 86k on them is to many miles for a hot plug like this? Like to get yalls opo on it had a bad experince with bosch fusion on a nissan 240 once so what would yall do? Thanks

 

Can't for the life of me understand this, but, even with the winter fuel I am averaging around 16 - 17 MPG with a mixture of driving. Only other thing I have done is put on my 18" Blizzacks for the winter (usually run 20"). So I can't support or deny their claim on the MPG

 

The E3 is not a 'hot' plug..it just has a different flame dispersion pattern.