i have a 99 250 with 115k and use 15 40 rotella never had a problem truck runs great

 

try synthetic

Go with AMS-Oil

http://www.amsoil.com/

This stuff is amazing! Check out the poll that we did on what oil you use, I put a little bit more detail in there and am going to post a pic soon.

GoodLuck, hope you love your truck as much as I do mine!

 

just replaced mine with rotella t last weekend..runs like a top....also switched from motorcraft filter to purolator...recomended

 

Redline Motor Oil is good too. I've tried a couple different brands and I really can tell what the motor likes. (If that makes sense). It runs better on the Redline. So I would try a couple of them out and just note how the truck runs, how quick the turbo spools up etc.

 

What oil is right?

I recently changed my oil for the first in my used '03 7.3; after about 1200 miles, the oil is still clear and the crankcase is full. I used Mobil Delvac 1300 Super 15W-40 because it is the least costly to buy and it also conforms to the Ford oil specification for the engine. I will probably go with Mobil1 for Pickups and SUVs the next time; it meets the SAE standard of CI-4. It also comes in 5-quart jugs, exactly 3 of which are needed for the oil change. Shell Rotella T synthetic is another choice which also meets the API certification of CI-4Plus. I do not know what the "plus" means; I do know that the Delvac has the same ratings. Neither Shell nor Mobil specifically have the Ford specification, but both say that they (the suppliers) recommend their products for the Power Stroke.

Any responses or other suggestions?

 

Mobil Delvac is what BART (Bay area rapid transit) has changed to, they don't change there oil at all, they just change the filters and add more oil. I sell mobil in our shop and the salesman sold me on it. I have run it in my 99 F350 for about a year now, I have changed the filter once. It has been to Canada and back to california and the wife and I go a lot. I have about 16K on the oil and am thinking about changing it. I just don't want to rush into anything. Mike OB

 

I go with 15 40 rotella

 

Ive run 15W40 Rotella since I bought my truck over 3 years and 30k miles ago, the previous owner did too, I have 126k on the clock and no problems.

 

I changed my oil about 3 weeks and 600 miles ago using Rotella 5W-40 synthetic and a PureOne filter. Advance Auto parts sells the PureOne filter; you have to ask for it where I live because they do not display it on the shelf. They had a sale where I paid $5.00 each (I bought 3). So far, so good. :boldblue:

 

I use Rotella T 15-40 and wix filters. perfect combo

 

mobil truck & suv

mobil 1 truck and suv is a great oil its a syt.at work we use mobil delvac 15w40 in all of our equiment at weyerhaeuser here in north carolina.

 

Based on the tests I've seen I'll be switching to Schaeffer's 9000 Supreme on my next oil change.

 

How about showing us theos test results??? Mike OB

 

How about showing us theos test results??? Mike OB

Check out Bobistheoilguy.com. You'll find alot of information out about Schaeffer's Oil as well as most any other oil on the market. I know Schaeffer's is a sponsor there, but so is Amsoil and some others.

Here's a link to the Schaeffer's technical data for 9000 Supreme:

http://www.schaefferoil.com/datapdf/9000.pdf

 

oil

I have had great luck over the years with Rotella synthetic blend, not just with this diesel, but with my 95 which I slod with 224,000 miles on it and running strong. Also I ahve used synthetic fuel stabilizer on occaision when I have a couple of extra bucks in my pocket. les

 

Has anyone used Castrol Tection? I have used Castrol in my cars and motorcycles for years and when I got into my Honda 500 cc for an alternator/generator replacement at 80,000 miles the aluminum innards were as clean and shiny as the outsides, and the cars have never needed any teardown. My '82 diesel Rabbit got run into at 270,000 miles and always had Castrol GTX. That's my testimonial for Castrol, and would like to use their diesel product if someone else has tried it and likes it.

 

I just recently bought a 99 ford f350 with a 7.3 powerstroke and it is about time for a oil change. The engine has a little over 90 k miles and I dont know what was used in it before ? I have deisel tractors and generators on my farm and I use rotella t in them I use castroll in all my gas engins . What does ford recomend advise needed thatks Steve

i personally would stick to rotella.
i dont mind changing my oil every 3-5k. gives me a chance to get a good look at the bottom side (ie. looking for leaks, worn parts, and ect.)

 

In all fairness, Rotella, Mobil, Castrol, Motorcraft, they are all good oils. I used to swear by Delvac in the Marine engines is severe hard going... But the truth is they are probably all good enough. Ford Australia is saying Castrol RX Super, even Castrol Tection Plus... In all fairness, I would not worry about which one I used anywhere near as much as HOW OFTEN I CHANGED IT!!!! :burnout

Severe work, like here in Oz, towing? Or severe work like in running big chips and street drags? I would change the oil closer to 3500 miles, and then I do not think it matters which of the good choices above... 5000 km here in Oz, not the Factory listed 7500 or the Factory listed 5000 miles. If it is hard going, change it more frequently, then the oil choice is not much to talk about of the above ones..

Regards from the Lone Ranger, changing oil since the 60's... Ha!