tstex

Both my brother and I procured 2014 F150's EcoBoost in mid 2015. I read a lot of posts on Engine Oil types, NOACK percentages, carbon build-up, etc.

I must admit I have been driving my car "like grandma" and not metal to pedal at all. I have been making many 50 mile hwy trips at 70-75MPH. No trailer hauls yet. When my brother was a COP [retired now], one of the mechanics told him to really the hit accelerator every once in awhile to burn-out the carbon build up from city driving. Not jackrabbit starts, but once 40PMG and getting on the freeway, let her rip. If this is the case, is there any solid data on how often one should really burn the fuel and high RPM's to burn out the carbon?


As stated, I do some long hwy driving, but wanted to know if there is merit in "letting her rip" and if so, how often and under mainly what type of reg driving conditions to warrant doing so?


Hope this makes sense,
tstex


BTW, used Penn 5W-30 Ultra Plat. w MC filter...My next oil change should not take as long

Tystevens

I don't know the answer to your question. But I do know that if I haven't put the pedal to the floor in a while, my '11 will put out a little bit of visible smoke for a couple seconds. Usually getting on to the freeway for me as well.

Cord

I think the old carbon wives tale might have been applicable to the older carburated vehicles. I don't see it applying to anything modern. That said, there is a slight twist which is applicable: the modern vehicles have adaptive learning programmed into them. If you drive like a granny, then the truck will learn this pattern and everything will become sluggish. The shifts are earlier, the truck will be slower, lethargic if you will. So getting on it several times every couple of weeks does keep the programming a little more aggressive.

tstex

thanks Cord, that is a great point. I am now in the process of retraining my 2014 that just hit 4000 miles on odometer.


Yesterday I exited onto a 3 mile straight feeder road in the rural/country aprt of 1-10 [no traffic, no commercial sites, all clear] at about 65MPH...then floored it. When she got to about 95-100, the car then hesitated like the fuel was being temp choked off and shifted down too...is this common or was I retraining her? I did it again and got the same result. This was all on the same 3 mile solo.


I am going to be on this road again tomorrow and will try one more time and see what happens...I need to get some fire under grandma's skirt but make sure it's all done properly....


thanks,
tstex

M&D

You were hitting the speed governor. Normal.

tstex

Well, now I know the upper limitations is 95-100mph. I had a 2009 Mazda CX9 GT and she did 121 on this road and I stopped accelerating. No gov on her...my daughter got her at 98K and I have my new ride....

bobkyle2

https://www.f150forum.com/f15/street...n-speed-36203/