Lousy, lousy gas mileage.
04-09-2018, 09:03 AM
#22
Drifting
Kidding aside, I think you should check your mileage the old fashioned way with several tanks of gas from different suppliers with similar type driving. I think you will have a little more data that is more accurate to draw the right conclusion.
Last edited by 02BlownZ06; 04-09-2018 at 09:03 AM.
04-09-2018, 09:08 AM
#23
Well said!!!!!!!!!!!!!!!!!!!
Funny, MPG never entered my mind when I bought my C5. It's sort of like when I had my 40' diesel motorhome, and people would ask what the mileage was. You don't buy these vehicles for the MPG. You buy them for the DPQ. The "Driving Pleasure Quotient".
Funny, MPG never entered my mind when I bought my C5. It's sort of like when I had my 40' diesel motorhome, and people would ask what the mileage was. You don't buy these vehicles for the MPG. You buy them for the DPQ. The "Driving Pleasure Quotient".
Last edited by mikeam; 04-09-2018 at 09:09 AM.
04-09-2018, 09:22 AM
#24
Melting Slicks
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I have 0 complaints on the Shell Premium I use on my C5 except for the cost. But maybe something like this happen with the Chevron station you used. I used premium at a discount station for my Maxima almost all the time. Then I noticed that I was not getting the mileage on tank full’s that I was used to. It was at the level that I experienced when I put in Octane 87. So I switched to Hess Premium. The mileage returned to its previous normal. To prove I was not loony I went back to the discount station again using their premium and the mileage dropped. I called the State’s regulatory agency that tests the pumps requesting a test be done. They did and found a problem. Although the agency did not tell me what they found, I speculated the discount station was either mixing the premium with regular 87 or with 89.
04-09-2018, 09:28 AM
#25
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St. Jude Donor '11
I have always gotten great mileage when using union 76, but with this chevron, it is terrible.
In an average month, I usually top off the take when it is 3/4 full.
I usually fill up two times in a month with 76.
I have already filled up three times in two weeks with this chevron.
I really think it is the gas, and not the gauge.
I tried the techron in the black bottle four different times, and it changed nothing.
Like I said(even with the chevron), once I drive for ten minutes, the gauge reads normally, until I get gas again.
With the 76, I get around 20 mpg around town, and 26 on the long hauls.
With this chevron, the gas seems to disappear with very few miles.
It reminds me of my R/T pickup.
That gets 12 around town, and 16 on longer trips.
This trip today in the Vette was like I was driving the pickup.
The car runs fine with both brands of gas,but there is a huge difference in mileage.
I will for sure be going back to the 76 gas.
Bob.
In an average month, I usually top off the take when it is 3/4 full.
I usually fill up two times in a month with 76.
I have already filled up three times in two weeks with this chevron.
I really think it is the gas, and not the gauge.
I tried the techron in the black bottle four different times, and it changed nothing.
Like I said(even with the chevron), once I drive for ten minutes, the gauge reads normally, until I get gas again.
With the 76, I get around 20 mpg around town, and 26 on the long hauls.
With this chevron, the gas seems to disappear with very few miles.
It reminds me of my R/T pickup.
That gets 12 around town, and 16 on longer trips.
This trip today in the Vette was like I was driving the pickup.
The car runs fine with both brands of gas,but there is a huge difference in mileage.
I will for sure be going back to the 76 gas.
Bob.
04-09-2018, 09:31 AM
#26
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St. Jude Donor '11
That didn't take long. "Just when I thought I was out, they drag me back in". So let's do a little math. 20 mpg around town with Union 76 equals 2 fill ups a month. With Chevron you fill up 3 times in 2 weeks. That's 6 fill ups a month. So your 20 mpg on 76 is now 6.666 mpg or 77% less than before on Chevron.
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
04-09-2018, 09:42 AM
#27
Pro
That didn't take long. "Just when I thought I was out, they drag me back in". So let's do a little math. 20 mpg around town with Union 76 equals 2 fill ups a month. With Chevron you fill up 3 times in 2 weeks. That's 6 fill ups a month. So your 20 mpg on 76 is now 6.666 mpg or 77% less than before on Chevron.
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
04-09-2018, 10:36 AM
#28
Safety Car
That didn't take long. "Just when I thought I was out, they drag me back in". So let's do a little math. 20 mpg around town with Union 76 equals 2 fill ups a month. With Chevron you fill up 3 times in 2 weeks. That's 6 fill ups a month. So your 20 mpg on 76 is now 6.666 mpg or 77% less than before on Chevron.
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
04-09-2018, 10:44 AM
#29
Melting Slicks
Fill the tank to the top, push a reset on one of the trip odometer readings, drive a good bit down to a quarter tank or lower. Fill up again and note the gallons then divide the mileage on the trip meter by the gallons used. Or keep guessing.
for the record I have no idea what my gas mileage is........I’m too lazy to do the math and my gas gauge doesn’t work....
for the record I have no idea what my gas mileage is........I’m too lazy to do the math and my gas gauge doesn’t work....
04-09-2018, 12:14 PM
#30
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Hey B0b
04-09-2018, 12:24 PM
#31
Drifting
Thread Starter
That didn't take long. "Just when I thought I was out, they drag me back in". So let's do a little math. 20 mpg around town with Union 76 equals 2 fill ups a month. With Chevron you fill up 3 times in 2 weeks. That's 6 fill ups a month. So your 20 mpg on 76 is now 6.666 mpg or 77% less than before on Chevron.
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
In summation, there is nothing wrong with the fuel you are putting in your car. THERE'S SOMETHING WRONG WITH YOUR CAR!
When I mention "fill up", I am saying I fill the tank when it is still at 3/4 full.
I never let it get below 3/4 full.
So on that basis, using the 76, I only need to put 1/4 of tank in to fill it, twice a month.
With the chevron, I have already had to bring it to full three times in two weeks, and I am not driving any differently with the chevron, than I do with the 76.
Bob.
04-09-2018, 12:31 PM
#32
Drifting
Thread Starter
Gas here is on the average, $3.85 a gallon.
While driving yesterday, I spotted two different stations that were over $4.00 a gallon, in the San Gabriel valley.
Bob.
Last edited by calguy; 04-09-2018 at 12:33 PM.
04-09-2018, 12:37 PM
#33
Drifting
Thread Starter
04-09-2018, 12:48 PM
#34
Safety Car
What gas milage what
Never use a Gas gauge in a older Corvette to determine gas mileage . Gas used miles driven is a only way to really see what you got .. I work on these old C-5s and the fuel system is well have to be a GM engineer to understand how they work .I have called GM to get info on the fuel system and how it really works on the C-5 ,This is what I get Bob is on vacation and will not be coming back and he is the only one that knows about this fuel deal so don't call back .. so gas used miles driven .OK then tell us about the wrong fuel we all are using ,I don't get it ..
04-09-2018, 12:48 PM
#35
Drifting
Thread Starter
Fill the tank to the top, push a reset on one of the trip odometer readings, drive a good bit down to a quarter tank or lower. Fill up again and note the gallons then divide the mileage on the trip meter by the gallons used. Or keep guessing.
for the record I have no idea what my gas mileage is........I’m too lazy to do the math and my gas gauge doesn’t work....
for the record I have no idea what my gas mileage is........I’m too lazy to do the math and my gas gauge doesn’t work....
My driving is pretty routine, in that I usually drive the same places(mostly on business) every day, so the way I tell what kind of mileage I am getting is, how long it takes to get the needle to come off the full mark to the 1/8th marker on the gauge.
With this chevron, that happened the very first day, in less than 30 miles.
With the 76, I can drive about 80 miles , and the needle is between full, and the 1/8 marker on the gauge.
This is the one time I am going to run the tank dry, so I can get that shitty chevron gas out of the tank.
Bob.
04-09-2018, 12:52 PM
#36
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Yello95 (04-10-2018)
04-09-2018, 01:03 PM
#37
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St. Jude Donor '11
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FX VETTE (04-09-2018)
04-09-2018, 01:40 PM
#38
Safety Car
Wait a minute let me get something straight here. You fill up at 3/4 full. You've topped off 3 times with chevron. That means you've been slightly diluting the gas you already had in the tank, not ever having a full tank of chevron.
You still don't even have a full tank of chevron in the car. This is the most bogus thread I've ever seen.
You still don't even have a full tank of chevron in the car. This is the most bogus thread I've ever seen.
The following 6 users liked this post by dbgoodwin:
blue_74 (04-10-2018),
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04-09-2018, 02:13 PM
#39
Drifting
Just spitballing here...but...it's my understanding that he DIC uses a calculation independent of the gas gauge when reporting average and current fuel economy. If that is correct, why even look at a known problematic gauge - why not compare mpg reading in the DIC.
Plus, the post above makes a great point.
Seems like anything would be better than using a known problematic gauge to base this on.
Plus, the post above makes a great point.
Seems like anything would be better than using a known problematic gauge to base this on.
Last edited by Ed Ramberger; 04-09-2018 at 02:14 PM.
04-09-2018, 02:37 PM
#40
Drifting
Thread Starter
Wait a minute let me get something straight here. You fill up at 3/4 full. You've topped off 3 times with chevron. That means you've been slightly diluting the gas you already had in the tank, not ever having a full tank of chevron.
You still don't even have a full tank of chevron in the car. This is the most bogus thread I've ever seen.
You still don't even have a full tank of chevron in the car. This is the most bogus thread I've ever seen.
I misquoted in a post a while back.
When I first decided to use chevron, I let the tank run to just about empty, then filled it with chevron.
Since then, it get's filled when the gauge reads 3/4 full.
The tank has nothing but chevron presently.
Again, because I am going back to 76, I will let the tank get close to empty, and fill it with 76 from now on.
Obviously I never had this bad mileage thing, until I put chevron in the tank.
Bob.