Synthetic oil

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Aug 28, 2005 | 09:03 PM

06f250fx4

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Synthetic oil

How many miles do you need to have to put in synthetic oil. I have an 06 PSD with 2500 miles on it now.

Aug 29, 2005 | 12:40 AM

BigF350

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Joined: May 2004

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From: Melbourne, Aus

I would wait for around 10000miles on it personally.

Aug 29, 2005 | 05:58 AM

f250meangreen

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I put it in at 5000, my first change.

Aug 29, 2005 | 10:03 AM

waynerb

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From: Los Lunas,NM

Royal Purple recommends 10k

Aug 29, 2005 | 12:32 PM

rstokes

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Joined: Jun 2004

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From: Birmingham, AL

I put it in at my first oil change (5K) and had no problems.

Aug 29, 2005 | 12:57 PM

kw5413

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From: Great State of Texas

I went syn oil @ 10,000 miles but, see no problem switching sooner. Plus, I still change every 5,000 miles.

Aug 29, 2005 | 05:35 PM

vrsc

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Joined: Apr 2005

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From: Orlando Florida

I will be doing mine @ 10,000 miles but still not sure what brand.

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Aug 29, 2005 | 07:03 PM

kw5413

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Joined: Apr 2004

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From: Great State of Texas

06...

Read this thread for simple answer:

https://www.ford-trucks.com/forums/s...d.php?t=406524

Aug 30, 2005 | 04:54 AM

#10

captchas

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Joined: Nov 2004

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From: north west new jersey

many vehicles now come with a full syntec or blend from the factory. you can do it at the first change.

Aug 30, 2005 | 07:30 AM

#11

mettech

Senior User

Joined: Jul 2005

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MC Oil

Why is it that Motorcraft oil is not in the top three of desired oils? I use MC 5W-20 in my '03 Sable and it returns outstanding UOA. I am expecting the same with MC 15W-40 for my truck too.

Today I'm changing oil for the first time in my '05 F-350 with MC 15W-40 at the dealership. It is my understanding that this is the best oil for the 6.0L. Why? Ford service told me it's because MC has more anti-foaming addidtives.

I have read (somewhere) that the factory fill is 10W-30 for break-in and that you should leave it in for the full OCI. I have 4893 miles with heavy towing for 2500 miles.

Now, what I find funny with all of this is: Some say that MC 5W-20 is too thin and is used only because of CAFE. Others say that MC 15W-40 is too thick. But both groups both agree that they know more than Ford on what is best....lol

Aug 30, 2005 | 02:17 PM

#12

ford390gashog

Fleet Owner

Joined: Jan 2004

Posts: 26,007

Likes: 575

From: Brentwood,CA

i think the reason more people don't use it is because it only comes in quart containers not gallons. but it is also the same price as all the other oils 1.98. i wish it had moly though but it is still a fine oil. i have used it and lots of the other brands of diesel oil in my truck.