which motor oil?
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Senior User
Joined: Nov 2005
Posts: 130
Likes: 0
From: Mass
which motor oil?
Just bought an 08 XLT with the 5.4L and only 10,500 miles! Just wondering what I should be using for oil in it. Should i use standard stuff or the full syn? Also considering using standard with an additive like Lucas, Prolong and such. I do change at regular intervals. I do plan on using only Motocraft filters.
Also, anyone have experience with royal purple?
Also, anyone have experience with royal purple?
Sick 'n Tired
Joined: May 2006
Posts: 2,969
Likes: 47
From: League City, TX
Indeed, search for the 1.4 opinions. But, in the end it doesn't really matter. Just use a motorcraft filter and change it at the user manual recommended interval.
A good rule of thumb but by no means a rule:
Conventional oil gets replaced every 3000 miles
Semi-syn gets changed every 5000 miles
Full syn gets changed every 7000 miles
Pick your favorite brand...
A good rule of thumb but by no means a rule:
Conventional oil gets replaced every 3000 miles
Semi-syn gets changed every 5000 miles
Full syn gets changed every 7000 miles
Pick your favorite brand...
Senior User
Joined: Jun 2007
Posts: 374
Likes: 0
Change the oil 5-7000 miles and use 5/20. Go with any major brand and you will be ok. I just dont get why this is so hard for people to get. Not trying to dog you here but its amazing how many topics are on this subject.
Senior User
Joined: Aug 2009
Posts: 434
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From: Ontario, Canada
Had a pretty good debate going on about it in this thread a couple of months back. Interpret and follow said advice as you see fit. 
https://www.ford-trucks.com/forums/9...-question.html
https://www.ford-trucks.com/forums/9...-question.html
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Senior User
Joined: May 2008
Posts: 121
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From: South, AR
I'll tell ya this, I've been running MC 5/20 since I got my truck and have always had a ticking noise between 1100- 1500 rpm. Well I switched to high mileage 10w30 castrol with MC 820S filter and no more ticking noise. 5w20 just too light for higher mileage vehicles IMO. Just my .02 carry on.....
Posting Guru
Joined: Mar 2003
Posts: 1,622
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From: nevada
Pick your poison, I personally run full syn in all of my vehicles. Get it on sale, more miles between changes, and your total cost isnt that much dif. Once read a report on oil testing, in every category except price, the syn outperformed. If you only keep a vehicle a few yrs, run the cheap stuff. I drive mine into the ground, so I like to get a lot of miles on them before they go bye-bye. Never had a oil related motor prob.
