What fuel to use in my VX SS V8?

[ozengines]

What fuel do you guys use in your SS V8's, I do not want power I want economy $$ on a long trip, does the E-Gen 10% ethanol run OK in a V8, seeing it is 95 octane versus 92 octane for Unleaded. Need to know ASAP please. First time long run for my new ride since buying it.
Peter

 

[HoldenMan7]

What fuel do you guys use in your SS V8's, I do not want power I want economy $$ on a long trip, does the E-Gen 10% ethanol run OK in a V8, seeing it is 95 octane versus 92 octane for Unleaded. Need to know ASAP please. First time long run for my new ride since buying it.
Peter

Hey Mate

I would be using BP ULTIMATE or any 98 octane fuel, i use BP ULTIMATE in my VY S V6 and on long trips i always get alot better fuel economy, even in town i get better, and its better for the environment and the engine..

 

[ozengines]

Thanks Holdenman7, I will go top her up and do the maths when I reach Newcastle.
ozengines

 

[ESS364]

I ran ULP in my VX SS for 100,000 K's....no problem Tried PULP for a few weeks just after I bought it and it didn't seem to make any tangible difference to mileage. Other guys have said the same.

So long as it doesn't ping, I don't see why I should spend the extra.

I now have a VE SS and running it on ULP also. Will try both to see if there is any difference. Maybe others have some more experience in both.

 

[s1nge]

go the 95 octane, premium runs better for economy + power

 

[nicko]

Iv only ran BP 98 in mine and the car sounds so much quieter and is smoother. also my economy is great 10L/100km.

 

[holden007]

A friend uses E10 in his VX SS, goes a lot better but the fuel economy is low. I found BP Ultimate is the best fuel out there, not so much for power, but economy and smoothness. Since the old buick engine is rough, you can feel the difference.

 

[dufus]

Since the old buick engine is rough, you can feel the difference.

I totally agree, I can defiantly feel the difference between standard unleaded and BP Ultimate in my VR.

 

[veeque92]

Ive never noticed any difference and thats towing with the various fuels.

I only put in premium now every now and then to give my car a bit of a treat but economy wise it never changed a thing.

 

[accentstencil]

Ive never noticed any difference and thats towing with the various fuels.

I only put in premium now every now and then to give my car a bit of a treat but economy wise it never changed a thing.

I'm with you, I also can't see any difference in power or economy. I've heard on this forum that the car has to become used the premium over a period of time, several tanks full, but I don't know how much truth there is in that. Maybe that's my problem, I only put premium in occasionally.