P400 and towing

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Originally Posted by INter674

Yanks worrying about fuel use🤣

..what sort of figures are they quoting??...

I don't do farcebook...

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he is a fellow pom and sounds like he is from Yorkshire, who are known to keep hold of their brass :) and lives in Canada


this is his response to that same enquiry on the book of faces

’ve towed a lot with mine so far. Here’s my data. The average of towing and not towing over 4200 miles is 16.9mpg (British gallons). I have towed probably 1000 miles of that.

When towing a 3500lb caravan in southern Alberta in unusually still conditions, I managed 11.1 mpg; towing an 8000lb utility trailer, I got 16mpg (though some of that was downhill work).


On the Highway with nothing in the roof, I’ve managed between 19 and 24mpg — but on a 2200mile trip with two kayaks on the roof in the mountains I managed 21.6 mpg.


I’m my opinion, if you’re towing a low-profile 4000lb boat and trailer (assuming the combined weight is 4000lbs), I’d expect 14-16mpg in favourable conditions.

So up to 26l/100klms..same as my mates LC200 when towing his brick at 90kph max (too scary over that speed he says).

Sounds about right if they tow 3.7t as allowed over there..and we know they tend to go over the top with weight and speed eg. F250 towing a D47U dozer/trailer.🤤

Still..that gonna crimp range badly with a std tank.

I wonder if the tuning is fat to provide for crap fuel/engine protection..similar to the Y62 which goes super rich on load/high revs. Tuners lean this out to gain extra power eg 50kw/Y62..but it must be run on ultra to be safe.

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Originally Posted by INter674

So up to 26l/100klms..same as my mates LC200 when towing his brick at 90kph max
Still..that gonna crimp range badly with a std tank..

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I am looking to hook up a Camper trailer for our lap of Oz next year, so lets say around 2 ton, i will be carrying at least 3 extra Jerry cans to give me at least
some modicum of range when we get off the black top .. just miffed the D300 was not available initially and also for being to impatient to wait.

Steve who posted on FB does do both tarmac, gravel, national parks and back wood trails, so assume it will be a reasonable comparison to touring in OZ

Keep in mind that a lot of towing in the USA is done on freeways at around 70 miles per hour!

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Originally Posted by INter674

Y62 is a pretty sophisticated engine:

The*VK56VD*is a 5,552*cc (5.6*L; 338.8*cu*in) 32-valve, DOHC, Direct Injection Gasoline (DIG) aluminum-alloy V8 and features*Nissan's advanced*VVEL*(Variable Valve Event & Lift System). The direct injection system provides better wide-open throttle performance and improved fuel economy and emissions performance by reducing engine knock, improving combustion stability and controlling injection more precisely.

Block..piston and bores also have special chemical treatments etc.

One good aspect is that like the 200s V8 it is vastly understressed aka American style no 'subs for cubs' so there's huge capacity for more power.

Wikipedia

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Last week had lunch with a close friend who is well known in Hobart as a former Nissan Service Mngr and for past 15 odd yrs had a w/shop specialising in Nissan with his business partner, also ex Nissan Dealership. Ol mate bought a new Y62 a few months ago. He laughed when I asked fuel economy. Answer was 15-17 lphk NOT towing and basically doesn't matter how you drive it, lightly or hard, the consumption is still pretty much the same. But he still wears the permagrin constantly!

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Originally Posted by INter674

Y62 is a pretty sophisticated engine:

The*VK56VD*is a 5,552*cc (5.6*L; 338.8*cu*in) 32-valve, DOHC, Direct Injection Gasoline (DIG) aluminum-alloy V8 and features*Nissan's advanced*VVEL*(Variable Valve Event & Lift System). The direct injection system provides better wide-open throttle performance and improved fuel economy and emissions performance by reducing engine knock, improving combustion stability and controlling injection more precisely.

Block..piston and bores also have special chemical treatments etc.
Wikipedia

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A lot of that has been around for yonks,direct injection,variable valve timing,DOHC,alloy block,adjusting tuning for economy and minimise engine knock,etc,etc.But its probably way uprated than anything 10yrs old.Tuned to the max.

But the P400 is probably light years ahead,it will have all that plus,turbo,supercharged,and on it goes.

I am guessing the P400 will only run on premium fuel?

Sometimes i really wonder why people get so fixated on fuel economy.They pay upwards of well over $100K for a vehicle,then are worried about a liter or four of fuel here or there.At the going rates thats about $300 to $400 over 10 000K's.Just a drop in the ocean,compared with maintenance,repairs,and the huge amount of depreciation on these vehicles.
Sure everything adds up,but there are definitely more things to worry about.

Maybe i am missing something[bighmmm][biggrin]

Just get in the thing and enjoy it.[biggrin]
Drive it like you stole it if you want.[thumbsupbig]

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Originally Posted by donh54

Keep in mind that a lot of towing in the USA is done on freeways at around 70 miles per hour!

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the guy lives in lethbridge, Alberta in Canada, he does a reasonable amount of off road

The old saying that you don't get something for nothing comes to mind and the differences between brands are marginal eg Audi does better on some performance/fuel metrics but that comes at a premium price and prob won't apply in Aus anyway.

I agree that worrying about fuel use/economy can be a waste of time...there just too many variables to consider.

At least we are spoilt for choice atm....pretty soon it may not be the case with the unstoppable march to simpler more profitable electric cars.

Give me the kw and I'll decide how to use them😎

Yeah, could not agree more about the comments as far as fuel economy is concerned, hence very nearly purchased a Y62 earlier this year, it has a very big tank and even at 25 l/100 (towing) you get a reasonable range. Coupled with the fact that they will cope with standard ULP if that's all that is available, then petrol is a proposition.
The P400 might consume a bit less, it has a much smaller tank and no clue about if it will stomach ULP. So the equation for towing range and fuel management is for me at least an important consideration. An auxiliary fuel tank for the P400 would sell me on it I think.
The 2021 diesel, (225kw & 650 N.m if I remember correctly) will certainly have the numbers to tow and uses less fuel than the P400 but also a smaller fuel tank to accommodate the AdBlue.
So, getting real world numbers helps with the decision.
Pros and cons abound.

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Originally Posted by PeterJ

Yeah, could not agree more about the comments as far as fuel economy is concerned, hence very nearly purchased a Y62 earlier this year, it has a very big tank and even at 25 l/100 (towing) you get a reasonable range. Coupled with the fact that they will cope with standard ULP if that's all that is available, then petrol is a proposition.
The P400 might consume a bit less, it has a much smaller tank and no clue about if it will stomach ULP. So the equation for towing range and fuel management is for me at least an important consideration. An auxiliary fuel tank for the P400 would sell me on it I think.
The 2021 diesel, (225kw & 650 N.m if I remember correctly) will certainly have the numbers to tow and uses less fuel than the P400 but also a smaller fuel tank to accommodate the AdBlue.
So, getting real world numbers helps with the decision.
Pros and cons abound.

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You could always give ARB a call and see if they have decided to do any accessories for them.Or some of the other aftermarket companies.Just thinking of a larger tank,it could sway your decision.