gas mileage?
 

Hey, I'm sorry if this is in the wrong forum but I was just wondering what everyone's gas mileage is? I get about 160 miles per tank during normal city driving and I was wondering if this is the normal rate of supras. Thanks.

I have an 86.5 N/A and around the city I'll get about 280 miles to a tank. On the freeway, about 350. That's right in the range of 20-30 mpg like it's supposed to get I believe.
If you have a lead foot it 'el get worse mileage.
WOuld be interesting to see what everyone else is getting.

i have an 87 turbo and on a good day i will get 220 city and 320 hwy but cali has the crapiest gas in the world.

ive got a 86.5 NA and i get around 200 mpg city. heres a question, what are some ways to improve gas milage? aside from not driving so hard.

I do mainly 'city' type driving, and on half a tank, i'll get about 150miles. This is on an '88 N/A

To increase the mileage:

Make sure it's tuned up frequently with spark plugs, wires, dist. cap and rotor, fuel filter and STP Oil Treatment. StP will make the oil more viscous, so less friction means less energy lost to heat.
ANother thing is to make sure your tires are well balanced, properly inflated and the car has good alignment.
Adding fuel system cleaner periodically will also help.

hmm so like 220 per tank how many liters or gallons does the tank hold ?

I found if you lay off the turbo liek dont make it go over 0 then the gass millage is significantly better

But when you got a car like this it is hard not to

87 Na
 

Mine gets around 220-240 between fillups. I'm an american living and working in Kuwait so Im not worried about the price of gas which here it costs me around 12 dollars to fill up my tank, but my car gets well below what it should.

My tank holds about 15.5 gallons. There is 3.78 liters per gallon, so that ends up being bout 57 liters per tank. Is gas priced per liter in other countries? Im in the US.

Yep - its priced in litres all over Europe. And just as a notification - Petrol has now officially exceeded ?1 per litre :|

wow.....all of you guys are getting so much better mileage than I am.... I have a question.... would having a blown head gasket have anything to do with bad mileage because I believe I have a BHG. Also I was wondering how much better mileage would I be getting if I changed my spark plugs. Thanks.

I believe that having a BHG would kill gas mileage as it would alter your compression.

If the spark plugs are really gunked up then it will make a difference. If they are only slightly worn you won't notice much by changing them.
You definently need to focus in on the BHG issue first though.

it's funny that you mention the BHG and mileage. When I had my BHG, I had it for a long time and didnt realise it. My mileage was pretty good, I was getting about 400-450kms a tank. Now with my fixed HG, I get about 350kms a tank...

Tank info
 

Before BHG, 17/24mpg (city/hwy). After BHG, 15/22mpg. ????

Tank holds 18 gallons, per manual.

Also, attempting to measure true fuel MPG must be done by topping up the tank, driving 100-200 miles, then top up again. Divide the # of gallons bought into the # of miles driven, = MPG.

I always fill my tank, as I don't like stopping to pump more than necessary. Use the trip odometer to measure the miles between fillups.

Also...a very important note/tip....don't let your tank get below 1/4 full. The crap floating around in there will plug up the screen easier, which can starve/lean the engine fuel needed. And....the pump is electric, and it sits in the liquid gasoline to keep it cool. Pumps burn out 2-3x faster when you always run close to empty.

Learn your car. When my gage reads just above 1/4, I used 10 gallons.

Damn good advise mrnickleye.

To clean that screen you speak of one would have to remove and take apart the gas tank?

Keeping the fuel system clean really helps
 

^^^ You need to pull the fuel pump. The filter/screen, is attached to the inlet side of pump. You must remove the gas tank to get at the pump. Its such a big job, that I would replace the pump while I was there.

My pump is original on my '89, and still working fine.

I recommend using an injector cleaner in the tank every 10 or so fill-ups. (6 months). Techron is one of the best YOU can buy (I get proffesional stuff for the shop). They sell it at walmart, and chevron gas stations. Its in the gas at chevron and texaco.

Thanks for info.

What is this proffesional injector cleaner you speak of?
What do you think about B12 Chemtool?

"400-450kms a tank. Now with my fixed HG, I get about 350kms a tank..."


that is 240-270 miles a tank, and then 210 miles a tank...and if the tank is really 18 gallons, that sucks ass. thats 13-15 and 11. something. My monte carlo which was a carbed 350 got better than that when i didnt race anyone.

yea i drive my car hard sometimes. no wonder i have so many problems haha.

the original MPG for the supra
MPG (highway)------23
MPG (combined)-----19

I while back, I converted all that into KM's, and if my calculations are right, i should be getting about 400kms per tank....I dont know if I am right...so I think I am in the normal range...My car is weird haha....before and after HG kms, lol.

Sounds like you're running on some very crappy fuel there - granted its cheaper - but what octane? I fill up with 95 octane and get 375miles on a tank with careful driving, or 99 octane and get an extra 20 miles or so out of it. This is the Research Octane Number, not the Engine Octane (which i think you use in the US)

i usually run 91 octane. i cant afford to get anything higher at the moment. gas prices are crazy in canada right now. where i live, in vancouver BC, it just hit about $1.25 a litre....i remember when i first got my car, it was like 60cents a litre and that was considered high......pfffft. haha.

Professional Fuel Injection cleaners
 

I've heard some good things about B12. I used it years ago to clean carbs with.

At the shop we use BG products for all the fluid services, with machines.

http://www.bgprod.com/products/fuelair.html

One called MI3000 (now CF5) is 4x stronger than what you can buy at parts house. Its for maintaining the system, put in tank about every 10-20 fillups. We sell it for $10 a can.

For the air intake and injector service, 44K is 10x stronger, and used when a dirty system is a problem.

When I first got my licesnse (im only 19, BTW) Gas was under 1.50 here in NJ. Now its over $3. Back then, with my 83 olds cutlass with at least 50 hp, I could get 5$ worth, and drive around ALL day. Now 5$ will get me to the mall and back. Haha. I totalled it up today, I got 10$ of gas from below E at $3.02(3.3 something gallons), and I drove 74 miles And now its below the E line. This is driving in grandma mode(under 2k rpms, not a lot of throttle). So these cars can be good. Oh that averages to 22.4 mpg.

Thanks mrnickleye. Good info.

I feel my fuel system is pretty dirty so I will be looking into getting some of this.

hey there, im haveing gas milage prob
 

hey there guys...i have an N/A, atuo, 89 supra with a 90 jdm engine and i just finish replaceing my head gasket. I also weid back on my stock muffler but somehow, my gas milage is still bad, it only last me about two days until it get to E. do i was wandering if there is any leak or sometime that is useing up my gas, cus im loseing a lot of money just for gas. please help me...anything will do as long as i don't lose so much money on gas!

hey i came up from florida to ct and spent about 160 in gas i have a 87 5spd i think when you do city driving the stop and go traffic do help because you constently are increasing and decreasing your speed it waste more gas srry bout the spelling

What kinda of gas do yall use i have been using regular i think thats (89 octane)will that hurt anything, if so what.