Normal oil comsumption 7.3
Thread Starter
|
Posting Guru
Joined: Jul 2006
Posts: 1,720
Likes: 1
Normal oil comsumption 7.3
Ok,, 7.3 diesel. Just drove 3000 miles at highway speeds. Short 100 mile trip pulling 6000#'s+ load. Rotolla 10w40. Used 1qt in 3000 miles with 135000 miles on engine. Just wondering what is considered normal? I think 3000 miles/qt at 70+ speeds is ok but my son's 6.0 diesel doesn't use any apparently in the same distance. Any input thanks Jim
Gone, but not forgotten
Joined: Oct 2005
Posts: 5,026
Likes: 2
From: Charlotte-Fairbanks-Bflo
How many miles on the 6.0? My 7.3 just started using a little at 200,000, about a gallon in 6000 miles. I just change it then and do not add any. I am not at all concerned about that. My Cat 3208 in my motor home will use a gallon in 2000 miles and it only has about 45,000 on it. That does concern me a little.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
I just returned from a 4000 mile trip and used 3 quarts. Very hard running in very hot weather with AC on 2400 rpm at 68 mph because of 4.88 rear axle with 24,000 lb total vehicle weight.
Most of the time it would be doing 14-18 psi and 900 degrees pre-turbo on flat ground. The slightest grade would bring 20 psi and 1000 degrees.
Most of the time it would be doing 14-18 psi and 900 degrees pre-turbo on flat ground. The slightest grade would bring 20 psi and 1000 degrees.
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
Ford considers 1qt/900 miles the point at which they treat it as excessive.
Your usage doesn't sound excessive, but how old is your air filter? if you have not done the CCV mod a dirty air filter can cause a little oil consumption through the CCV vent in the intake.
Your usage doesn't sound excessive, but how old is your air filter? if you have not done the CCV mod a dirty air filter can cause a little oil consumption through the CCV vent in the intake.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
I should have said that I expected to use some oil. What I did end up using is no surprise to me as the CCV always vents some grey mist and that has to be generated from somthing. That spinning crankshaft will most definately break up the oil and produce some mist to be vented.
All engines use some oil and if they don't, expect to have some prematurely worn valve guides due to complete lack of lubrication, etc.
All engines use some oil and if they don't, expect to have some prematurely worn valve guides due to complete lack of lubrication, etc.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Have you considered trying a 15-40 oil? The diesel will sometimes burn off the light oils in you motor oil and that could explain your usage. The most I've burned between oil changes is 1/2 quart and that's only pulling loads around 15,000 pounds. I've got 222,000 on the odometer now.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
The oil that I used this trip was Citgo 15-40. I buy it by the barrel at work.
I was using Mobil 1 Delvac 5-40, but dropped it after hearing something that the engineers preferred that dino based oil be used with HEUI injectors and just change it every 5000 miles or so.
I was using Mobil 1 Delvac 5-40, but dropped it after hearing something that the engineers preferred that dino based oil be used with HEUI injectors and just change it every 5000 miles or so.
Trending Topics
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
I never add oil between changes, at least so far anyway, knock on my head. Of course I never really go anywhere either and tow a boat occasionaly LOL. I think my oil simply ages rather than racks up the mileage. I hate that. At this rate I will hit 100k in the year 2030.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Gone, but not forgotten
Joined: Oct 2005
Posts: 5,026
Likes: 2
From: Charlotte-Fairbanks-Bflo
Originally Posted by Kwikkordead
The oil that I used this trip was Citgo 15-40. I buy it by the barrel at work.
I was using Mobil 1 Delvac 5-40, but dropped it after hearing something that the engineers preferred that dino based oil be used with HEUI injectors and just change it every 5000 miles or so.
I was using Mobil 1 Delvac 5-40, but dropped it after hearing something that the engineers preferred that dino based oil be used with HEUI injectors and just change it every 5000 miles or so.
Hugo Chavez sends his love to you and your family. Happiness is a Citco station without a customer.
Thread Starter
|
Posting Guru
Joined: Jul 2006
Posts: 1,720
Likes: 1
Originally Posted by Markadeck
How many miles on the 6.0? My 7.3 just started using a little at 200,000, about a gallon in 6000 miles. I just change it then and do not add any. I am not at all concerned about that. My Cat 3208 in my motor home will use a gallon in 2000 miles and it only has about 45,000 on it. That does concern me a little.
Elder User
Joined: Jan 2006
Posts: 649
Likes: 0
From: Charleston SC
I have noticed, and read here, that some engines (Including mine) will drop a single quart low within a thousand miles of an oil change, then stableize there. I added a quart and it was fine for a while then it went back down, but if I didn't add one back, it remained there for the rest of the oil chance cycle. I had heard that sometimes they "find a level" where they level out. Not sure if this is true or not, but I kinda thought this was strange. When it drops about half to one quart low on the dipstick, I leave it alone...unless I am heading back out on the road.. Just my opinion.
Gone, but not forgotten
Joined: Oct 2005
Posts: 5,026
Likes: 2
From: Charlotte-Fairbanks-Bflo
I've been using diesels for personel use for about 30 years and have always dealt in gallons. A qt. sure is not worth worrying about in my humble opinion. My Cat holds 7 gallons and is a real pain to add in a pusher motor home. If I started worrying about qts. I would probably quit driving it.
Senior User
Joined: May 2004
Posts: 448
Likes: 0
From: Minnesota
Originally Posted by DaveWilliams
I have noticed, and read here, that some engines (Including mine) will drop a single quart low within a thousand miles of an oil change, then stableize there. I added a quart and it was fine for a while then it went back down, but if I didn't add one back, it remained there for the rest of the oil chance cycle. I had heard that sometimes they "find a level" where they level out. Not sure if this is true or not, but I kinda thought this was strange. When it drops about half to one quart low on the dipstick, I leave it alone...unless I am heading back out on the road.. Just my opinion.
Thread Starter
|
Posting Guru
Joined: Jul 2006
Posts: 1,720
Likes: 1
Surprise, when I thought I had driven 3000 miles/qt on oil,, the wife misread the records. I have actually driven about 4000 miles on 1 pint not 1 quart. So that in my book is miniscule. Given I have 133,000 miles on the truck. Many more trucking miles left. Jim
Senior User
Joined: Sep 2006
Posts: 484
Likes: 0
From: CT
question, those rotella 1 gallon containers at wal-mart, those are equal to 4 quarts right? not 3? on the side of the container, it only raeds to 3 quarts on it. i dont see a 4th mark?
thanks,
just thought id ask sins were talking about oil's
thanks,
just thought id ask sins were talking about oil's