General Rule for Gal/Hour Fuel Consumption

[GaryBDavis]

I need to know the fuel consumption rate for my JD5420. I know it will vary depending on what I'm doing with the tractor, but I just need an initial figure to work with. You'd think that after 300+ hours on it, I'd have some idea, but I've never tracked it.

Seems to me there was a rating in the manual for my previous tractor, a JD770. It was based on a 75% load at a certain RPM or something like that. But I can't find one for my JD5420 tractor which is 65Hp at the PTO.

Anyone have an idea what it might be or where I can find it?

Thanks

 

[Doc_Bob]

My New Holland TN70A repair manual actually lists the gallons per hour based upon rpm (I think it was rpm?).
Bob

 

[Dargo]

I have a JD 5425, which is obviously very similar. I think your best information will be here http://tractortestlab.unl.edu/Deere/Deere_5425.pdf which is the Nebraska tests on that tractor. In the link there is a section on fuel consumption based on various factors. It appears that running at full capacity using maximum power the tractor will use about 4 1/2 gallons of fuel per hour. Using about half the total available power the tractor will consume about 3 1/4 gallons per hour. Hopefully this helps.

 

[GaryBDavis]

That link gave me what I needed. Thanks for the info.

I wanted the 5425 so I could get triple mid hydraulics, but couldn't wait another six months for my dealer to get one in. Plus, they went up on the price quite a bit. Nice tractor.

 

[Soundguy]

Wow.. those jd units seem to be a tad fuel hungry compaired to ford/NH units...

Soundguy

I have a JD 5425, which is obviously very similar. I think your best information will be here http://tractortestlab.unl.edu/Deere/Deere_5425.pdf which is the Nebraska tests on that tractor. In the link there is a section on fuel consumption based on various factors. It appears that running at full capacity using maximum power the tractor will use about 4 1/2 gallons of fuel per hour. Using about half the total available power the tractor will consume about 3 1/4 gallons per hour. Hopefully this helps.

 

[Dargo]

Wow.. those jd units seem to be a tad fuel hungry compaired to ford/NH units...

Soundguy

Yes, I did notice that as well. Why would that be??

 

[schmism]

Yes, I did notice that as well. Why would that be??

they turn up the fuel to boost the HP numbers so they compair better?

 

[Soundguy]

Yes, I did notice that as well. Why would that be??

I'm surprised. You would think a company would kinda 'lowball' a fuel consumption number to make their product look good for marketing.

it takes me right at 2 hrs to mow 10 ac, and do about 8m round trip of driving... That equals about 5g of diesel in my7610s.

If I mow with my 10' mower.. it kicks out at just about 3 hrs.. give or take a few minutes.. still only about 5g of diesel.. either with my ford 5000 or my NH 7610s.... thus.. it looks like about a 2g job for 10ac...

Looking at the batwing mower and tractor.. tha's 1g an hour at full pto rpm and a pretty good load.

Soundguy

 

[IslandTractor]

I thought that all diesels had similar fuel consumption per hp/hr of work. I don't recall the formula but I believe the standard is to compare fuel consumption per hp per hour. Obviously there would be some differences (a 20hp diesel would presumably be more efficient than a 100hp diesel engine in delivering 15hp, and a turbo diesel would be more efficient than normally aspirated at the same hp) but other than friction losses the amount of power derived from a diesel engine is pretty much exactly correlated with fuel use.

 

[Soundguy]

You would think so.. assuming equal efficiency.

It takes 5g's of fuel to mow 10ac of my pasture. it doesn't matter if it is my 95 hp tractor and a 15' mower for 2 hrs.. or that same tractor and a 10' mower for 3 hrs.. it's 5g of fuel. incedentally.. my 70 hp tractor, with that 10' mower / 3hrs.. also takes about 5g of fuel....

However.. looking at some jd literature.. I've seen.. there numbers on some machines look much worse.. etc.

Soundguy