Is a V8 petrol comparable to a V8 diesel for towing?

[Bobby]

A diesel will outtow a petrol engine all day long. Diesel fuel economy is better and you can reprogram the engine management computer to make a diesel pull like a freight train. Diesel engines last longer.

However, diesel costs more than petrol, the diesel engine costs more, oil changes cost more, and most diesels are turbo charged and more complex and expensive to work on.

You need more gears with a diesel due to a narrow power band.
That's why semi trucks can have 12 or more gears.

Diesels have incredible low range torque. You only need 12 or more gears for the large semi tractors. Petrol engines tend to have more horsepower and do better on the top end for racing performance, but they don't compare to diesel torque and pulling power.

Here is a video of a guy in Australia who is reprogramming ECU chips on Ford 2020 F250 diesel trucks. You can easily pull a 6-7 ton trailer with this truck and hardly know it's back there. That 10 speed transmission is a beast. It has 5 different modes for different driving conditions. Economy, Towing, Performance, Rain/Snow, and Normal.

My neighbor has a 2004 F250 with a chipped 7.3l diesel and he pulls a 35 foot(11m?) 5th wheel camping trailer through the Colorado Mountains with ease.

You can't really compare petrol to diesel as there
are too many other factors.
If the diesel is a turbo model it is different again.

[sprintcyclist]

.......... The chassis, drivetrain and suspension on Y62's are very strong beefy, similar to a LC200. Jeep's and Disco's are toys in comparison.

Fuel economy wise in Melb peak hour traffic I get 17-18l/100km whereas in the Jeep I got 11l/100km. On the highway the Patrol will use 12-13l/100km, the Jeep 8.5-9l/100km. The only time the Patrol will use lots of fuel is short trips and rapid acceleration. The journalist fails to mention this but the Patrol will do 0-100km/h in @ 6.5secs which is Golf GTi territory and when you're shifting 2.8t that quick, you'll use fuel. I don't drive like nanny either as I luv the acceleration and noise the Y62 makes. No other SUV out there goes like this unless you paid $150+K for a X5M, RR Sport, Porsche Cayman Turbo, etc.

We've got a 22" caravan which weighs 2.7+t. When I tow the van with the Patrol we get 23l/100km and with Jeep I got 18l/100km. I also drive at the speed limits (100-110km/h) unlike a lot of caravaners who drive at 90km/h and pee everyone off on the highways. People with LC200 diesels get 20-21l/100km towing vans similar to ours at similar speeds. So what's the big deal with an extra 2l/100km's? Compared to the Jeep the Patrol is super stable and doesn't get pushed around by wind and the caravan. CB, I don't know what your neighbour was doing wrong, but 25l/100km is extreme or maybe he was driving at 140-150km/h?

Yeap the suspension is soft and it may lean in corners but it weighs 2.8t empty, can carry 700kg inside and tow 3.5t - all at the same time. No SUV in AUS outside of a LC200 with a GVM upgrade or a US import can do this. Also I'm not expecting hot hatch handling as it’s an SUV, nor should anyone with a vehicle weighing this much or as capable as this. I also bet though, the Patrol handles and rides better than a dual cab ute or SUV with a GVM close to 7t.

So the Y62 is actually a very good buy, it's cheap to purchase compared to the competition, is big, has tonnes of features and goes like hell. Yes it may use a little more fuel than the turbo diesel brigade, but the $20-$30K I saved in the purchase price can go towards the extra $5-$10 of fuel I use every 100km. I’m back ahead when it comes to long term maintenance……… ..........

https://www.carsales.com.au/editorial/d ... ew-103437/

[sprintcyclist]

To you all, yes, a diesel has a torque peak about 1500 --> 2000 rpm.
A petrol has a few torque peaks, 2500 --> 3000 and 5500 --> 6000 rpm
So a diesel may well lug away better at lower revs.

A petrol has a few other attributes and is quite capable of towing too.

[sprintcyclist]

Here we go

' .........2007 Toyota LandCruiser GXL Auto V8 Petrol
$25,000
2007 UZJ 100 Series 228,000 kms


5 Speed Auto, 2 New BF Goodrich Tyres on front -rear tyres are 80 % also BF Goodrich, Recently serviced,  Kings awning- tow bar and trailer brakes,  Aircon works great,  LightForce Spotts, 
Has a few very minor bumps ect but overall in good condition, Has 2 sets of keys and drives extremely smooth with plenty of power, 
This is the very last of the 100 Series model,
Comes with Roadworthy and registration until Nov 8 - 2020 '

https://www.gumtree.com.au/s-ad/eimeo/c ... 1254216543



' .......... 2006 100 series 1HD- FTE
$57,500,  This vehicle is in mint condition runs beautifully comes with RWC, plus Rego runs out in September this year. 216600klms plus comes with a full service history. All extras were all fitted professionally late last year. Only selling due to upgrade.

Lambs seat covers and ingle fridge not included but will come with a 78L ARB fridge. posted on other sites. Please call hubby ( Shane ) on ******0210 or private message myself if interested. ...'



$25K or $57.5K

A V8 petrol with 220,000 kms or a V8 diesel with 216,000 kms.

Have a guess at the future maintenance bills of the diesel.

[sprintcyclist]

Found some good figures

............. Because these lovely rigs are what I know most about, let’s look at a 100 series Landcruiser as an example:

Petrol 6 Cyl 4.5
Around town: 20 l/100 km
On highway 16 l/100 km
Off-road: 22+ l/100 km
Towing Something Big: 22+ l/100 km


Petrol 8 Cyl 4.7
Around town 18 l/100 km
On Highway 15 l/100 km
Off-road 20+ l/100 km
Towing Something Big 20+ l/100 km


Diesel non-turbo
Around town 16 l/100 km
On Highway 13 l/100 km
Off-road 18+ l/100 km
Towing Something Big: 18+ l/100 km


Diesel turbo
Around town: 14 l/100 km
On the highway: 10 l/100 km
Off-road: 17+ l/100 km
Towing Something Big: 17+ l/100 km ...............

https://4x4fever.com/landcruiser-100-se ... nsumption/

[Neferti]

Some of those older vehicles might be just about ready for a new engine! I know somebody with a Nissan Patrol and he had to replace the engine not so long ago. Not sure how many k's it had done or what year it was made but 2007 ish. I'm a female and that information doesn't remain very long in my noggin.

[Texan]

Sprint - Which V8 is in the Landcruiser? The 4.7l is a dog. The 5.7 gets almost the same efficiency and pulls like a freight train. Very dependable also.

[sprintcyclist]

Some of those older vehicles might be just about ready for a new engine! I know somebody with a Nissan Patrol and he had to replace the engine not so long ago. Not sure how many k's it had done or what year it was made but 2007 ish. I'm a female and that information doesn't remain very long in my noggin.

That is a possibility with a 10 + year old car

[sprintcyclist]

Sprint - Which V8 is in the Landcruiser? The 4.7l is a dog. The 5.7 gets almost the same efficiency and pulls like a freight train. Very dependable also.

It was the 4.7 petrol (gas). Still, this is just as a comparison.

What is lost on the swings is gained on the roundabouts .............