If you have the 5.4l engine, how often are you guys changing your oil? At 3.5k MI exactly? 5k? Every month? I know that dirty oil can accelerate the cam phaser issue. Also know that companies like jiffy lube back tracked and said to change oil after 5k mi, especially if your using a synthetic blend, what is used in our trucks, or fully synth. What's the max mileage youd push it before changing the oil? Just curious.

 

I change my oil no more than 4k miles, I use chevron 5w-30 what the manual recommends I have the 5.4L with 140k on the clock.

 

5,000 miles on 5w-20 synthetic and a motorcraft filter.
You might hear that you can go 10k, but that is crazy in my mind.
Anything before 5k, and you are just wasting money.

 

I do every 3-4k with motorcraft syn blend
Its about 50$

 

Power, are you using a full synthetic?

 

Every 7500 miles, Mobil 1 5w30 full syn with a MC filter. 199xxx trouble free miles

 

Off topic here but I have to ask, is "Low Pan" in reference to the movie "Big Trouble in Little China"?

 

You are correct Mr. Burton

 

After all the time and money I have invested in the timing components,phasers,VCT solenoids I will NOT go a single mile over 3k using MC 5-20 oil and filter.

 

Once a year whether it needs it or not. Boils down to about 3500-4k miles. Motorcraft 5w30, Motorcraft filter.