My 2005
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New User
Joined: Jul 2004
Posts: 5
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From: Wisconsin
My 2005
Picked up my 2005 F350 Lariat FX4 a couple weeks ago.
My first Ford. My first Diesel. Love it so far!!!
I orderd it Loaded it came in in 6 weeks.
Dad retired from GM so I always bought GM. Decided to give Ford a shot and I am glad I did. Cant beat the room in the crew cab. Trying to get used to the noise of the diesel after driving gassers for 20 years.
I was thking about switching to synthetic after 2500 miles is this sufficient time to break in the engine?
Check out my gallery for Pics.
My first Ford. My first Diesel. Love it so far!!!
I orderd it Loaded it came in in 6 weeks.
Dad retired from GM so I always bought GM. Decided to give Ford a shot and I am glad I did. Cant beat the room in the crew cab. Trying to get used to the noise of the diesel after driving gassers for 20 years.
I was thking about switching to synthetic after 2500 miles is this sufficient time to break in the engine?
Check out my gallery for Pics.
Posting Guru
Joined: Jan 2003
Posts: 2,181
Likes: 3
From: Eastern CT.
Nice looking truck ! 
I myself would wait untill you had like 10,000 miles on the truck before you change to synthetic oil,,you wanna make sure its broke in well first,,I've heard that the diesels take even longer then that to break in
I had a 99' with a 7.3 PS and I swicthed to synthetic around 11,000 miles and it seemed fine,,,Good luck.
Later,,,,,,,,,,Mark
I myself would wait untill you had like 10,000 miles on the truck before you change to synthetic oil,,you wanna make sure its broke in well first,,I've heard that the diesels take even longer then that to break in
I had a 99' with a 7.3 PS and I swicthed to synthetic around 11,000 miles and it seemed fine,,,Good luck.
Later,,,,,,,,,,Mark
Elder User
Joined: Nov 2003
Posts: 626
Likes: 0
From: Orange Park, FL
Welcome to FTE Fzemberi. Great looking truck, I like the controls on the steering wheels. Truck looks nice in black also. This is my first diesel also and I was a little concerned about the noise initially because I knew we were going to use the truck to take on vacations. Well it didn't take long, I now anticipate the growl of the diesel when I fire it up in the morning and don't ever want to lose that growl. Once up to highway speeds it just rattles along and now I'll never drive another gasser truck as my personal vehicle.
As for the sythetic oil quesiton. These was has been discussed a bunch on this board and there are several opinions. Some say new vehicles like the Corvette and others are delivered with synthetic, so it won't hurt. Others will say for proper break-in of the diesel, stay on dino for around 10,000. What it comes down to is it is your truck, so I guess read up and make your decision when you feel educated. You will probably get plenty of responses on this to help aid you in your decision. Myself, no preference, I am not running synthetic and don't think I will for quite some time, I don't say never because you never know.
As for the sythetic oil quesiton. These was has been discussed a bunch on this board and there are several opinions. Some say new vehicles like the Corvette and others are delivered with synthetic, so it won't hurt. Others will say for proper break-in of the diesel, stay on dino for around 10,000. What it comes down to is it is your truck, so I guess read up and make your decision when you feel educated. You will probably get plenty of responses on this to help aid you in your decision. Myself, no preference, I am not running synthetic and don't think I will for quite some time, I don't say never because you never know.
Posting Guru
Joined: May 2004
Posts: 1,366
Likes: 2
From: Northern Utah
fzemberi, Congrats on the truck- And you are a brave person to venture into the oil war zone... I am also a first time Ford owner 03 CC 6.0 now has 40,870 miles and it runs better than the day I picked it up brand new. I will give my oil opinion and if I am flamed, so be it:
Highly recommend synthetic oil in a 5w40 weight due to the fact that the 6.0 has a tendancy to "lope" with the heavier 15w40. Mobil 1 seems to be a popular choice- I get slightly better mileage with it towing and unloaded. I do not go for extended intervals due to increased levels of fuel in the oil contamination which lowers the flashpoint according to Blackstone labs.
Three last points: 1) I would wait until 7-10,000 before using synthetic. 2) Install a fumoto valve 3) As you probably know, the 6.0 only needs 13.5-14 quarts per oil change not 15.
Good luck!
Highly recommend synthetic oil in a 5w40 weight due to the fact that the 6.0 has a tendancy to "lope" with the heavier 15w40. Mobil 1 seems to be a popular choice- I get slightly better mileage with it towing and unloaded. I do not go for extended intervals due to increased levels of fuel in the oil contamination which lowers the flashpoint according to Blackstone labs.
Three last points: 1) I would wait until 7-10,000 before using synthetic. 2) Install a fumoto valve 3) As you probably know, the 6.0 only needs 13.5-14 quarts per oil change not 15.
Good luck!
Last edited by utahtom; Oct 30, 2004 at 11:09 AM.
