Which oil for my 2003 PSD 6.0L? - Ford Powerstroke Diesel Forum
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post #1 of 25 Old 06-16-2009, 07:32 PM Thread Starter
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Which oil for my 2003 PSD 6.0L?

I just bought a used 2003 Ford Excursion 6.0L PSD and love it.

My driving characteristics are; around the country side with stop and go but mostly with trips typically less than 20 miles (carrying all 6 of us in the car). On the longer distance side of things we'll travel 200 miles towing a small utility trailer with a weight of about 1000 Lbs. at speeds around 65 mph not more than 8 times per year.

I want to change the oil a few days from now.

After I drain the existing oil I'll be installing an Amsoil oil by-pass filtration system and then refilling with new oil- but which type and make?

At certain intervals I'll have oil analysis done.

Ford recommends 15w40 but there seems to be a lot debate as to which oil is the most economical and highest quality.

Synthetic oils seem to have a lot of fans....but that stuff does cost A LOT.

Dino oil.....a lot of folks like too.

Which would you recommend for my situation?

Thanks fellas.
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post #2 of 25 Old 06-16-2009, 07:40 PM
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Motorcraft oil and filters

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post #3 of 25 Old 06-16-2009, 07:47 PM
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amsoil by far... I have been looking into this a lot lately..... and I cant find anything that shows the numbers that amsoil does for protection and lubrication and viscosity break down...

if you want to run amsoil you need to run their cleaner right before you drain your oil though.... I am about to get setup as an amsoil dealer myself because of how much I am starting to believe in their stuff...


Amsoil will extend your oil changes so it really doesnt cost more, they actually warranty everything for 25k intervals, so you will save money that route, they lubricate better especially for towing and heavy traffic application, not to mention race applications... there is no better... I am a royal purple dealer right now and I am dropping their line to go with amsoil

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post #4 of 25 Old 06-17-2009, 09:39 PM
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Serious looking bumpers
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post #5 of 25 Old 06-17-2009, 09:44 PM
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does that mean you want to order one? lol

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post #6 of 25 Old 06-17-2009, 09:48 PM
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motorcraft and a 12oz jug of Prolong engine treatment :thumb

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post #7 of 25 Old 06-17-2009, 09:51 PM
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do you guys running conventional realize that conventional can breakdown in one trip across town? meaning you no longer have an protection? synthetic is the only route to go.... and with amsoil, 25k mile oil change intervals... you cant beat that

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post #8 of 25 Old 06-17-2009, 10:41 PM
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valvoline premium blue extreme full synthetic 5w-40 here...love it

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post #9 of 25 Old 06-17-2009, 10:48 PM
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I highly recommend synthetic less problems over the couser of ownership but IMHO it doesn't have to be Amsoil. Do not and I repeat do not go more than 7,500 miles on an oil change especially with the majority of short trips you make moisture builds up in the system and if you do some research on this forum and some other places the 6.0 doesn't do so hot with extended oil change do to the HUEI injection system now on a common rail system yes but not on ours. I also highly recommend only using motorcraft fuel filters and oil filters. Do some checking before you try extended oil changes.

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post #10 of 25 Old 06-17-2009, 11:57 PM
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oil change

I'm from Louisiana and its verry hot down here, I have been using Royal Purple from the begining, and go 10,000 miles between oil changes. Am I doing any damage to my truck by going that far. Travle mostly 50 mile trips to town in stop and go traffic, should I change my oil more frequently?
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