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Discussion Starter #1
I'm about to do a 100,000k service on my 4.6 Bird.

I want to do the following:

-Run a higher mileage fully synthetic oil with a premium (Mobil 1) filter.
-Switch to a set of premium plugs (NGK or the like)
-Put a K&N drop in filter
-Either put a set of Motocraft or MSD wires on (Which will be better ?)
-Also, when is it a good idea to replace the coil packs ?

THe ECU has no codes, the car burns no oil but the mileage in town is lacking. I think this general tuneup might help the situation.
 

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AlexP said:
I'm about to do a 100,000k service on my 4.6 Bird.

I want to do the following:

-Run a higher mileage fully synthetic oil with a premium (Mobil 1) filter.
-Switch to a set of premium plugs (NGK or the like)
-Put a K&N drop in filter
-Either put a set of Motocraft or MSD wires on (Which will be better ?)
-Also, when is it a good idea to replace the coil packs ?

THe ECU has no codes, the car burns no oil but the mileage in town is lacking. I think this general tuneup might help the situation.
Here's what I'd do.

Run a seafoam treatment through the motor to clean it up.

Clean the maf sensor.

It might be time for o2 sensors if you haven't already done them.

New fuel filter.

New paper oem air filter (not KN)

No need for mobil1 oil, just run 5w30 motorcraft oil, and a motorcraft filter.

I would run the stock motorcraft wires, not the FRPP ones.

Drain the transmission fluid, and fill with merconV. A new pan filter will be in order also. Make sure you drain the converter.

Flush the power steering system with merconV fluid, as per the article.

Drain the coolant system, and refill with prestone 50/50.

You might want to bleed the brakes, or at least replace the fluid in the resivior with fresh stuff.

I would also run stock autolite or motorcraft platnium plugs since this is a daily driver and not a race car, and you want the longevity over the coppers.

Deffinitely drain the diff, and refill with royal purple diff oil. It already has the friction modifier in it, so you don't need to mess with that.
 

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Discussion Starter #3
So the stock stuff is the way to go ?

I just rebuilt the entire front suspension, put new monroematics (Black ones) all around, put a fuel filter, cleaned the MAF and other little things.

I suppose with the money that I save from not buying the expensive stuff, I could replace the o2 sensors...
 

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Discussion Starter #4
So, I need 3- o2 sensors right...


MOTORCRAFT Part # DY1086
F6DF-9G444AA; 2 required per vehicle; Rear

and then...

MOTORCRAFT Part # DY761
F5MF-9F472AA; Front {#F5MZ9F472AA}
 

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no you only need two...the ones BEFORE the catalytic converters...those are the ones that the EEC uses to fine tune the A/F mixture......the two rears are only to monitor catalyst operation (there are a total of 4 in your car)
 

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guitar maestro said:
no you only need two...the ones BEFORE the catalytic converters...those are the ones that the EEC uses to fine tune the A/F mixture......the two rears are only to monitor catalyst operation (there are a total of 4 in your car)

correct, they are just cat sniffers.
 
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