More about oil
Thread Starter
|
Postmaster
Joined: Aug 2003
Posts: 4,483
Likes: 2
From: Central Texas
More about oil
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.
Anybody with similar experience between oils?
Anybody with similar experience between oils?
Junior User
Joined: Oct 2003
Posts: 92
Likes: 0
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.
FTE Leadership Emeritus
Joined: Jan 2003
Posts: 161,999
Likes: 75
From: 3rd Rock
Originally Posted by dbm04F250
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”
Postmaster
Joined: Dec 2003
Posts: 3,359
Likes: 0
From: Dallas
Originally Posted by SBV45
What is a significant decrease in mpg? I don't understand why an oil change would affect mileage.
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.
Trending Topics
Junior User
Joined: Oct 2003
Posts: 92
Likes: 0
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.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Tuned
Joined: Mar 2004
Posts: 284
Likes: 1
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
Got Diesel?
Joined: Jan 2004
Posts: 4,345
Likes: 21
Go back to dealer and show them the book (15 qts).
Show them the "high level" on the tip stick and force them to drain out the excess and refund you for 1 quart of oil.
System hold just over 15, but you can only "drain" 15 (extra quart (or less) is inside high-pressure system.
They over-charged you and over-filled your truck - Keep all paperwork and receipts so if you have any problems, you have proof that they OVERFILLED!!!
Good luck and let us know how it pans out.
Jeff
Show them the "high level" on the tip stick and force them to drain out the excess and refund you for 1 quart of oil.
System hold just over 15, but you can only "drain" 15 (extra quart (or less) is inside high-pressure system.
They over-charged you and over-filled your truck - Keep all paperwork and receipts so if you have any problems, you have proof that they OVERFILLED!!!
Good luck and let us know how it pans out.
Jeff
Postmaster
Joined: Dec 2003
Posts: 3,359
Likes: 0
From: Dallas
Originally Posted by matt1751
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.
Junior User
Joined: Oct 2003
Posts: 92
Likes: 0
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.
Post Fiend
Joined: Aug 2002
Posts: 5,324
Likes: 1
From: Denton,TX
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.
Postmaster
Joined: Dec 2003
Posts: 3,359
Likes: 0
From: Dallas
Originally Posted by johnsdiesel
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.