What kinda gasoline you take?

[RitchieDon]

Thanks, Green Dragon, for helping me with my temper tantrum. My apologizes to all. My VX runs fine with 91 octane or better and I have the same option to put whatever I want in my tank as all of you do. I'll leave the "facts" to you experts.

[xdfarrx]

I use the best I can put in... in all my bike and car.
The fore mentioned post nails the reasons why....
Most cars can adapt to lower and higher grade fuels, via ECU, so at the end of the day I believe it is subjective... I do 'feel' I get more fuel economy with higher grade-

[mbeach]

I've always been a stickler for good quality gasoline, and I've had a few cars that will balk on anything less than 94 (but that's because I tuned them on 94).

With that, I run straight 87 from a reputable (amoco, shell, sunoco) dealer in the VX. This motor -with it's conservative timing- doesn't need the detonation prevention that high octane fuel provides. In fact, high octane fuel burns slower. I wonder how much of that fuel is still burning when it leaves your normally aspirated engine's cylinders?

Burn the best that you can afford, but best meaning quality of the fuel, not the rating. Steering clear of the Gulp n' Go Fillin' Station's pumps is better for your engine than running Ma and Pa's Super 93.

[Tone]

There will actually be MORE plug build up running hi test since the engine cannot completely burn all fuel and will run cooler than designed. Isuzu did NOT design for availabitity of fuel, please, but for what the motor was designed for.

How do you know VX Crazy gave you a -? What was her comment? Since someone can only give one ding at a time, two others didn't like your post either.

[RitchieDon]

Thanks for calling me on this one, Tone. I don't understand this reputation thing. All I can tell you is I saw I had a -3 rating and the only message there was the one from VX crazy which I quoted in the previous post. The people on this site have been very good to me and I don't want this to blow out of proportions. My apologizies to anyone I have offended.

[RitchieDon]

I hate to bring this subject up again but I really have a need to do so. After my posts on this matter I got several nasty-mails. One of them suggested that I get my facts straight. I took the advice and have talked to mechanics, engine technicians and specialists. Here is what I have learned.

First off, everything I have said on this matter is wrong. These engines were designed to run on the lower octane. Putting better fuel in the engines is a waste of money and can actually decrease your performance and fuel milage. I have waited until now so I could experiment with what I was told and I can tell you that after going from 91 octane to 87, my fuel milage has jumped from below 14 mpg to around 15. I have not experienced any knocking.

The car had a newly overhauled engine in it when I bought it and I have been breaking it in with conventional oil as I was advised by the rebuilders to do so. I now have about 8,000 miles on it and am going to switch over to synthetic. This should increase the mpg to average between 16 to 18 which is the best I could hope for.

I stand before you admitting I was wrong and spoke on a subject that should have had a little research done on my part. Send me more negative reputation points. I deserve them. I am taking every word back one byte at a time with ample amounts of crow sauce. I am working very hard to suppress my contemptious nature and will try to be a positive contributor to this site.

My subscription to this site is due and I will make my decision to continue to be a part of it depending on the response of the members. My signature tag pretty well sums it up.

[WyrreJ]

My subscription to this site is due and I will make my decision to continue to be a part of it depending on the response of the members.

You were doing remarkably well this time - most would have just kept quiet after learning the facts from the experts, instead of publically correcting themselves for the education of others -- until you got to that part. Hints of blackmail are never endearing.

[thebear54]

I still use the old method I learned from my father who learned it from his....
About every 4th tankfull I will go the Super and add a bottle of injector cleaner. I average 21 to 23 MPG with my VX, which is way above normal for city/highway driving. I just completed a 405 mile round trip to Brookline, MA from my house in Mt. Tabor, VT and I still had about 3 gallons in the tank when I refueled. Maybe I just got lucky with my 3.5
John

[thebear54]

PS....RitchieDon,
It takes a big man to admit when he is wrong and an even bigger man who makes it right.
My hat is in your corner...the rating system(although sometimes funny, it can also hurt)should not be used to "castrate" someone for their opinions or statements. If facts are wrong they should be PMed first to set the record straight.
THAT'S MY 2 CENTS
John

[RitchieDon]

Thanks for your support John. I am only trying to get things right. I was out of line and I certaintly don't want to put bad information out to those who are in the same situation I was in when I oringinally came to this site looking for information on my VX. Wyrrej suggests that I am trying to blackmail the members? I'm just trying to admit that I spoke without knowing what I was talking about. High octatane fuel was needed in the old days when the pavement pounders that I was used to needed it. Things have changed with the computerized ehnanced engines.

[technocoy]

I don't know ritchiedons past on the board but i think it may be a little wrong that people are giving him any kind of flack for stating an opinion that as far as he knew at the time was true... I have heard ten million DIFFERENT "facts" about fuel grade. i don't think he did anything out of line at all, and it dissapoints me that the VX family would so quickly condemn someone for such a petty thing. of course i may not understand the situation at it's core.

just my 2 cents.

technocoy