OK, I'll probably stir it up again, but.... I changed my oil. I was running Castrol HDL Tection 15-40. I changed to Delo 400 15-40. After starting when the engine was cold, I was amazed at how much louder it was with the Delo. I drained my crancase (love that Fumoto valve) and filled with Castrol again. I started it the next morning it was much quieter. I checked the Delo containers to make sure I had put the right weight/type oil. I didn't think there would be that much difference between oils of the same weight. It has been 60 here in the mornings and I park in the garage anyway.
There was no doubt in my mind, that noise is significantly reduced after I went to syn.
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Administrator
tim.lamkin@internetbrands dot com
Life is not only time……paradoxically, it is the denial of time!
What lies behind us and what lies before us are tiny matters compared to what lies within us.
My first oil change @ 5,000, I tried Rotella and although I didn't really notice any difference in the truck running ... I did have a significant decrease in mpg. I think I will try Delvac 1 as originally planned on this next change and see what happens.
My first oil change @ 5,000, I tried Rotella and although I didn't really notice any difference in the truck running ... I did have a significant decrease in mpg. I think I will try Delvac 1 as originally planned on this next change and see what happens.
I did have a significant decrease in mpg…….OK I am having a hard time finding the correlation between the oil change and the loss in MPG Did anything else happen, like cold weather or…operative word here is “significant”
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Administrator
tim.lamkin@internetbrands dot com
Life is not only time……paradoxically, it is the denial of time!
What lies behind us and what lies before us are tiny matters compared to what lies within us.
What is a significant decrease in mpg? I don't understand why an oil change would affect mileage.
Heavier oil takes more power to pump. This truck has two pumps, a high pressure pump (4000 psi)runs the injectors. This is a lot of the mechanical noise under the hood. This pump takes a lot of power. The low pressure pump lubricates the engine. There is also parasitic drag, the crankshaft turning through the oil at the bottom of the block that hasn't made it to the pan. This is why it is important to not overfill the engine oil.
These actually do affect mileage. This and excessive oil pressure with heaver oil is the reason so many dealers are wanting to recommend a 5W30 oil to 6.0 owners.
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03 6.0 SC Short bed 2WD Auto
Preditor, Gages, K & N FIPK
All I can say is that after my first extended trip, holiday weekend from S. Ga. to Atlanta and back (with good trip mileage). I changed the oil the following weekend at 5,000 miles. The next tank of fuel showed a decrease of almost 3 mpg and has sustained that since then with a slight improvement with the weekly routine being the same as before the trip and oil change.
OK, this has to be one for the record, I have never read of this resuilt before.
Same fill up palce also?
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Administrator
tim.lamkin@internetbrands dot com
Life is not only time……paradoxically, it is the denial of time!
What lies behind us and what lies before us are tiny matters compared to what lies within us.
I had my first oil change done by the dealer at 3000 miles on my 04 F250 PSD, Since then I have noticed a lower Idle at cold start, decreased MPG by about 2MPG and intermidiate lack of power which seems to vary depending on outside temp. I was wondering should I go back to the 10w30 that was in the engine for the break in period as the truck ran great or should I try a syntheic like the Mobile Delvac 1 5w40, I'd hate to waste $$ on oil trying different weights. The other thing I was wondering is I've been seeing prople on here say they only put in 13-14qt's but the manual states 15qt including filter but yet my invoice from the dealer shows 16qt's, I checked the level and is slightly above the Full indication on the dip stick(gray one). did they over fill causing these problems? Should I drain some oil out? This is my first PSD and been learning new things about them daily, I love the truck and this site, Any suggestions would be appriciated,, thanks matt
I had my first oil change done by the dealer at 3000 miles on my 04 F250 PSD, Since then I have noticed a lower Idle at cold start, decreased MPG by about 2MPG and intermidiate lack of power which seems to vary depending on outside temp. I was wondering should I go back to the 10w30 that was in the engine for the break in period as the truck ran great or should I try a syntheic like the Mobile Delvac 1 5w40, I'd hate to waste $$ on oil trying different weights. The other thing I was wondering is I've been seeing prople on here say they only put in 13-14qt's but the manual states 15qt including filter but yet my invoice from the dealer shows 16qt's, I checked the level and is slightly above the Full indication on the dip stick(gray one). did they over fill causing these problems? Should I drain some oil out? This is my first PSD and been learning new things about them daily, I love the truck and this site, Any suggestions would be appriciated,, thanks matt
We all are learning our terriffic but complicated and different trucks.
My oil change to 15W40 Motorcraft brought a 1 mpg drop of mileage. I picked up two to 17 with another quick change to Mobil D 1.
I have had mileage jump around the last few weeks. It is probably related to the winter/summer fuel changover. My truck will only hold 14 Qt. I think I will drain to 13.5.
You may have 16 because the size of the pan a quart doesn't raise the level very far.
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03 6.0 SC Short bed 2WD Auto
Preditor, Gages, K & N FIPK
Yes Tim, Fill ups were from the same place. Twiddle your thumbs, tap your feet slow top offs and documented the same as I had been doing. See my thread in 13.5 Quarts in 6.0L as well for and explanation on the amount of oil required @ oil changes vs the 15 quarts that the manual states. Basically 15 quarts would be required for a completely purged system which does not take place during normal oil changes. Hence the need to watch the dip stick when you get to the last couple of quarts. You are only replacing what you have removed.
dbm, a completely purged system would require 15.95 quarts. The 15 quarts is the refill capacity. This was the same thing they did with the 7.3, listing the refill capacity knowing you wouldn't be able to drain the HP oil reservoir. If you're not getting 15 quarts of oil out of the system I would suggest calling Ford.
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1997 F250 HD PSD SuperCab 4X4 ZF5 4.10
173K miles CMP Info1 CMP Info2
dbm, a completely purged system would require 15.95 quarts. The 15 quarts is the refill capacity. This was the same thing they did with the 7.3, listing the refill capacity knowing you wouldn't be able to drain the HP oil reservoir. If you're not getting 15 quarts of oil out of the system I would suggest calling Ford.
The manual may say 15 but 14 fills mine slightly over the full mark on the dipstick. Have you changed the oil on your 6.0 yourself? All of us that have seem to agree on 13.5 to 14 quarts.
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03 6.0 SC Short bed 2WD Auto
Preditor, Gages, K & N FIPK
