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Engine Oil Consumption Manufacter Figures

Birken Vogt

Charter Member
Joined
Nov 30, 2003
Messages
5,305
Location
Grass Valley, Ca
I have been advised by a manufacturer of engines that they do not publish an acceptable rate of oil consumption per hour because of varying load, etc.

We have one that may be consuming excess oil and it would be easy to say x number of quarts in x number of hours, etc. to decide on warranty but they want compression tests, bore scopes, etc. that will be difficult and time consuming especially since the method of repair will always be to just R&R engine assy. Maybe they are just trying to make it hard and just make the owner add oil and go away.

Is this the case across the industry or do some publish figures which exceeded will result in warranty acceptance?
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,865
Location
Northwest
Occupation
Machinery & Equipment Appraiser
In the past I used crankcase pressures to force the issue. That don't work anymore with the EGR stuff installed on diesels now.
 

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,057
Location
Pennsylvania
Occupation
Equipment Mechanic
I can only speak for Cat but they have tables (that are not widely available in the public domain) relating litres of oil consumed vs litres of fuel burned.

Deere does too, but not out in the public domain.

That don't work anymore with the EGR stuff installed on diesels now.

Actually Deere publishes Crankcase pressure specifications on iT4 and FT4 engines.
 

Mobiltech

Senior Member
Joined
Jan 14, 2014
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1,680
Location
Sask.
Occupation
Self employed Heavy duty mechanic
Cat truck engines considered 1 litre of oil for 250 litres of fuel used to be the warranty repair point.
 

Volvomad

Senior Member
Joined
Jul 13, 2011
Messages
476
Location
Ireland
Mercedes industrial V8's gave a figure of .05% of fuel consumption as the max oil consumption in the 90's
 

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
16,556
Location
WWW.
There is one area Manufactures are careful of {DPF systems}. A engine using oil will plug the DPF way faster, when it comes to warranty the manufacture will dance around that one.
Cummins has a wonder oil for their ISX model, The oil is made by Valvoline just for the ISX burner {$845.00 for 11 gallons} {cheap} It's used for one oil change interval. It does work
I know this because we in the shop were doing the service work on this customers truck at the time. It was using a gallon to about 220-260 gallons of fuel which worked out to 1000 miles
give or take and it's a 2017.
 

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
16,556
Location
WWW.
You mean you put the wonder oil in for one oil change and it is supposed to tighten up the rings or whatever?

I knew when I posted that it would raise eye brows- We didn't change it---It was done at Cummins. Engine had 70K on it IIRC. What was in that crap I have no frigging idea.

Everyone on here that reads that will be saying in their best countryfied voice {Now what in tarnation is
that there Truck Shop try-in whip up on us now? Cummins is got some sorter Bon Ammi Oil that thar
a keep'n a secret from the world.:)
 
Last edited:

Vetech63

Senior Member
Joined
Aug 10, 2016
Messages
6,362
Location
Oklahoma
Cummins mystery oil = lower oil consumption
Lower oil consumption = Less oil needed in the market
Less oil demand = massive oil industry lay-offs and bankruptcies
Layoffs/bankruptcies = Some of us will finally meet each other in person, shaking hands while standing in the nearest government soup line.
 

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
16,556
Location
WWW.
Cummins mystery oil = lower oil consumption
Lower oil consumption = Less oil needed in the market
Less oil demand = massive oil industry lay-offs and bankruptcies
Layoffs/bankruptcies = Some of us will finally meet each other in person, shaking hands while standing in the nearest government soup line.

I'm ready been whittling/carving a wooden bill to go peck sh!t with the chickens.
 
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