the horrible gas milage my 04 is getting
- Thread starter 2004TR4-SR5
- Start date
ronsta
New member
I'll have to try premium next fill up at the same station/same pump just to cross out octane level as a variable.
You said your MPGs increased to 19 after filling up with premium but is that reading from the computer or from a hand calc you did?
Casper421
New member
20 mile round trip everyday. 4 miles on highway and the rest in 55 zone so I don't see much city driving but we don't have much of that in Truckee. If I did more city driving I would get right around what your getting. I fill up every 11-12 days, less now with it being 15 out when I start my car every morning. Now we just need snow!
2004TR4-SR5
New member
wait..wait....you only fill up twice a month?? is it your daily driver?? i fill up twice a week and I'm all highway...jealousy is setting in
Casper421
New member
How many miles do you drive a week?
knightsfs4
New member
Now that you bring it up, for those who have used premium what's the difference you've seen? Always wondered but never did it.
2004TR4-SR5
New member
40 miles a day 40 miles x 5 days = 200 miles a week
Casper421
New member
You said you fill up twice a week! That means you get 100 miles per tank? Please correct me if I'm wrong but you full of :moon:
ronsta
New member
Yes, I'd also like to know as well... anyone use premium ?
zstampe
New member
Lol yes. Every two weeks, I drive about 150 a week or so.
Its my daily driver. I don't drive a whole lot, work is fairly close to home and I only work 14 days a month. When I drive to work it sits there my whole shift then I drive it home when I get off. The other driving I do is just around town. If we go out we take my fiancee's ford fusion quite a bit to save on gas.
chucknorris
New member
From my experience with using premium (91+) vs regular (87), it is my understanding that the premium is designed to ignite at a higher temperature. So, if your engine is not a high compression/high temp running engine, premium is a waste of money as you are not completely burning the air/fuel mixture in the combustion chamber. Could it hurt to use premium? Maybe long-term use, both mechanically (excess build-up) and financially (wasted money), but it probably wont blow up your engine. As far as MPG increase, again, long-term MPG may go up, but I wouldn't hold your breath or expect some dramatic short-term increase
thats my .02 cents.
thats my .02 cents.
2004TR4-SR5
New member
could premium hurt mileage at all? long term wise..??
bergs
New member
The owner's manual clearly states which fuel octanes are approved as well as what can be expected when using a particular octane.
OP - Have you considered checking the driveline bearings? (wheel, driveshaft, etc)
In other news, I'm happy to report I'm getting 20.5 mpg on my V8 using 87 octane
OP - Have you considered checking the driveline bearings? (wheel, driveshaft, etc)
In other news, I'm happy to report I'm getting 20.5 mpg on my V8 using 87 octane
TRDCal
New member
:iagree: with magert...once for kicks I drove like a granny to see how good my mileage could be and I got 18mpg...great it was nice to know that I can but screw that...I get 12mpg cuz I love hearing the engine roar, and thats why I bought a V8...if I was worried about mpg I would still drive my corolla!
chucknorris
New member
if you are speaking in terms of how many miles you will get out of the engine, I believe that premium could hurt but not kill. How? Well, the excess build up caused from un-burned air/fuel mixture will definitely cause premature wear on valves, cat converters, exhaust manifold etc.
In the end though, there are a number of things more likely to happen to the engine or drivetrain due to wear/tear that could cause the vehicle to stop working. Gas type may be a contributing factor to a failure, but not a definite cause.
bergs
New member
Again, the owner's manual states which types of fuel are accepted for these vehicles as well as what to expect when choosing an octane. Hi-test fuel is not going to hurt anything, be it short term or long term, in these engines.
As far as carbon buildup due to unburnt gasses damaging things....not likely. It's not 1967 anymore.
As far as carbon buildup due to unburnt gasses damaging things....not likely. It's not 1967 anymore.
ronsta
New member
The owner's manual clearly states which fuel octanes are approved as well as what can be expected when using a particular octane.
OP - Have you considered checking the driveline bearings? (wheel, driveshaft, etc)
In other news, I'm happy to report I'm getting 20.5 mpg on my V8 using 87 octane
bergs: when you say driveline bearings do you mean to check to make sure they're lubed?
Anyone know of any test one can perform to make sure the engine is operating at peak efficiency and not spiraling downwards? I know this will eventually lead to a CEL but if it takes a while to get the CEL I'm sure I as well as others would like to nip problems in the bud b4 it happens.
