Fuel comsuption

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jvazquez53

El Tractor
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I'm going to look a 92 FJ80 this weekend, asking price $5,000, mileage 85,000. Supposed to be in very good shape. How are these rigs on fuel, specially around the city, this will be the wife's vehicle. Anything in special that I need to look, like leaks in uncommon places, etc...:confused:
 
I'm going to look a 92 FJ80 this weekend, asking price $5,000, mileage 85,000. Supposed to be in very good shape. How are these rigs on fuel, specially around the city, this will be the wife's vehicle. Anything in special that I need to look, like leaks in uncommon places, etc...:confused:

Search.

Fuel mileage sucks.

Read the FAQ's.

Good luck.
 
I'm getting around 230 miles a tank. i only run 91 octaine and put lucas in with every fill. not saying that you need to do this. I have very limited wrenching skills so i try and spend a little extra on gas and stuff, just makes me feel like I'm doing what I can untill I learn more about my rig...these arnt cheap to drive ..it cost me about $65 fill my tank from a low fuel light. I have not really kept track of mpg but from what i understand expect 15mpg from a well tuned fzj not sure about the 91-92 rigs but someone here will I'm sure.

HTH

baran
 
Higher octane fuel (93) gives LOWER fuel economy than low octance fuel (87). Always use the lowest octane that your engine requires (or needs). Anything more is a waste of money. This is a very common misconception.

The Lucas is probably a waste also. If you're going to add any product, try BG44K after every other oil change. It will actually clean your fuel system.

I'm getting around 230 miles a tank. i only run 91 octaine and put lucas in with every fill. not saying that you need to do this. I have very limited wrenching skills so i try and spend a little extra on gas and stuff, just makes me feel like I'm doing what I can untill I learn more about my rig...these arnt cheap to drive ..it cost me about $65 fill my tank from a low fuel light. I have not really kept track of mpg but from what i understand expect 15mpg from a well tuned fzj not sure about the 91-92 rigs but someone here will I'm sure.

HTH

baran
 
Higher octane fuel (93) gives LOWER fuel economy than low octance fuel (87). Always use the lowest octane that your engine requires (or needs). Anything more is a waste of money. This is a very common misconception.

The Lucas is probably a waste also. If you're going to add any product, try BG44K after every other oil change. It will actually clean your fuel system.

What are you basing this on? My truck has always gotten better mileage with higher octane fuel.

Also, why is BG44K better than the Lucas product? What about SeaFoam? What about RedLine Fuel System Treatment?
 
BHM is correct, always use the HIGHEST octane your vehicle is capable of utilizing, which is pretty much every fuel injected vehicle made. If the timing can be advanced by the computer, then higher octane will gain more power which can equal more mileage if you keep your foot out of it.
 
Unless air bags, anti lock brakes, and stopping distance are considered.

Ok let's consider them.

The Acura RSX has the highest death rate of any car sold. It has super short stopping distances, front and side air bags and passed all current government crash tests.. Yet it still has the highest death rate.. Thoughts?
 
Ok let's consider them.

The Acura RSX has the highest death rate of any car sold. It has super short stopping distances, front and side air bags and passed all current government crash tests.. Yet it still has the highest death rate.. Thoughts?

Yes.

Take away the airbags and the "super short stopping distances" and the death rate will go up further.

Consider a 91-92 80 with rear drum brakes, no abs, and no airbags compared to a 95-97 with 4-wheel disc, abs, and dual airbags.




BTW, the RSX has the 2nd highest death rate. Followed by the 350z in 3rd. If you read the article you'll find speculation on an important contributor to higher death rates in sporty cars - buyer demographics. As a side note, if everyone drives their 350z like I drive mine I have no doubt as to why the death rate is high.

http://www.msnbc.msn.com/id/18184616/
 
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Yes.

Take away the airbags and the "super short stopping distances" and the death rate will go up further.

Agreed.

I'd rather be in a Cruiser with no ABS or Air Bags than my 06 Civic SI or my 97 Acura Integra GSR, both with ABS and Air-bags. I have a MUCH greater chance of surviving a major accident in the 80 compared to the other 2.
 
Ok let's consider them.

The Acura RSX has the highest death rate of any car sold. It has super short stopping distances, front and side air bags and passed all current government crash tests.. Yet it still has the highest death rate.. Thoughts?

Yes, mostly 'young & dumb and full of...' kids drive'em. How many of those fatal crashes happened as a result of pushing the vehicle beyond its limits or from racing? How many were the result of 'normal' driving accidents?

FYI- I, too, was once a young, dumb and full of &^%$ kid that receive more than 125 traffic citations...mostly speeding. I've bought alot of steak dinners for some attorneys.
 
Premium vs regular octane gas

Well, if your truck has demonstrated that it gets better mileage on super unleaded, then stick with it. I don't see how it's possible but hey, do what works.

I can tell you from technical experience, reading and speaking with many, many, many mechanics, that high octane fuel is designed to stop "pre detenation" in cars.

When you look at normal engine operation, fuel is sprayed from the injectors into the cylinder where the spark plug fires, at the precise moment when engine components are in the correct position, thus creating the explosion that forces the piston down.

In some engines that run hotter and have tighter specs (and require 93 octane), using low octane fuel will cause the fuel to burn BEFORE the spark plug fires. A high octane fuel is “less” explosive or volatile and will not burn until the spark plug fires.

So, using a higher octane fuel in a vehicle that doesn’t require it yields slightly less power from each burn because the fuel has less “power”.

This is my understanding of the process. I don’t know if I explained correctly but the outcome is correct.

This website for the Federal Trade Commision explaines it better and slimply lays out why premium gas offers no advantage over regular gas for cars that require lower octane fuel.

http://www.ftc.gov/bcp/conline/pubs/autos/octane.shtm

As far as the additive, well, again that's experience and listening to the pros.

I know one of the main ingredients of the Lucas product is alcohol, which, is known to be one of the less effective cleaners in the automotive world. BG44K uses a different base chemical for cleaning and is only sold by garages and distributors much the same way that Amsoil is. It’s a professional grade product.

Do a search for BG44K on the net and there should be some good information about it.

I personally like Seafoam for cleaning parts when I have the engine apart. It works well and isn’t expensive.


What are you basing this on? My truck has always gotten better mileage with higher octane fuel.

Also, why is BG44K better than the Lucas product? What about SeaFoam? What about RedLine Fuel System Treatment?
 
Ok let's consider them.

The Acura RSX has the highest death rate of any car sold. It has super short stopping distances, front and side air bags and passed all current government crash tests.. Yet it still has the highest death rate.. Thoughts?

Yes, people are out driving their skills even with all that advantage.


Now if someone in a 80 with ABS and airbags can manage to out drive their skills then they shouldn't be on the road in anything short of a golf cart.
 
No sir, this is NOT correct. You are wasting money. Do a few simple internet searches on the difference between high and low octane fuel. Your missing the whole point on the purpose of premium fuel and its use. It has nothing to do with fuel economy.

BHM is correct, always use the HIGHEST octane your vehicle is capable of utilizing, which is pretty much every fuel injected vehicle made. If the timing can be advanced by the computer, then higher octane will gain more power which can equal more mileage if you keep your foot out of it.
 
If the timing can be advanced by the computer

This is key to getting better performance from higher octane fuel. Some systems will actively advance timing to the point of knock to get every bit of performance from the fuel. In these systems running the highest octane fuel will yield positive results.
 
Any modern car (post mid 1990s) should have a knock sensor that will adjust the timing for engine knock.

This makes me wonder if you would get at least the SAME fuel economy from premium fuel as opposed to regular fuel being premium is "less explosive" if the timing is being advanced properly.

This is key to getting better performance from higher octane fuel. Some systems will actively advance timing to the point of knock to get every bit of performance from the fuel. In these systems running the highest octane fuel will yield positive results.
 

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