PREMIUM OR NORMAL UNLEADED

1750GT · April 03, 2009, 10:26:49 PM

Thanks Stuart, so if your using V Power or equivalent (Which I presume is 95 octane?), do the fuel additives (such as lead aditives) actually do anything except for the carbie/engine cleaning qualities? and are they worth using, or just a waste of time?

1750 GT

1300-GT-Junior · February 07, 2011, 05:02:22 PM

Sorry to bump this thread guys, I just want to be clear.

I am (fingers crossed) about to start running my 1972 1300 GT Junior with newly reconditioned carbs.

I know there is some debate about which fuel is best, I would like to know

a) which fuels are 'safe' to run as in which will not damage the car and

b) your preference.

1300-GT-Junior · February 07, 2011, 05:02:47 PM

Thanks very much in advance.

shane wescott · February 07, 2011, 10:29:19 PM

I run the BP high end one. Have used Shell previously in my 99 GTV religously (at first just to get the free model cars).

I had some issues with rough running on the Toypta dn GTV6 on it so jumped off. Have been on BO ever since. I use it is all my cars (two Toytoa's, and the GTV6)and three bikes (Honda, Aprilia Scooter,and the Ducati) although I do add valve saver in the Duke.

I also use the Wynns spitfire injector cleaner every few tanks or before long run.

Don't know whether I am wasting money or not - don't really care. I will stick to this fuel regime until results give me a reason to change.

Other things to worry about other than fuel :-)

One opinion for your poll.

Catch ya
Shane

philpot · February 09, 2011, 11:41:29 PM

Even the handbook for my Sud and 33ti recommend RON of 97+. Old Leaded Super used to be RON98, but was lowered slightly before its phase out. (96 just pre vanishing) Anyone else remember LRP or lead replacement petrol?

Just go for 98 octane of which ever flavour you reckon gets the most gongs (though it may be hard to catch some 'Mobile' Fuels...

)

re the Valvemaster type upper cylinder head lubricants....advice i've gotten is that alfas as high performance/high revving cars in the first place have hard valve seats, so I stopped using the above a couple of years back after doing so since the intoduction of 98 fuels after Supers (and LRP's) demise. No big dramas, been keeeping eye on valve clearances as per book.

Oh and for a really big rap

, A Currant Affair (sic) did a test a few years back and BP Ulimate went further on a identical tank volume than Shell V-Power and Mobil Synergy 8000...!

1300-GT-Junior · February 10, 2011, 12:22:50 PM

Ok, so I will run the 98 Octane fuel.

Sorry for the further question, I have searched the forum and can't find a clear answer.

In addition to the fuel should I be adding any other additive, whether it be the lead replacement additive with every tank or another additive every x number of tanks?

Thank you

John Hanslow · February 10, 2011, 01:45:08 PM

QuoteI am (fingers crossed) about to start running my 1972 1300 GT Junior with newly reconditioned carbs.

I know there is some debate about which fuel is best, I would like to know

a) which fuels are 'safe' to run as in which will not damage the car and

I believe that there was a thread a year or so ago and d it was confirmed that the 105 series engine was made with stronger valves suitable for unleaded petol - so your engine would not be damaged !

1300-GT-Junior · February 10, 2011, 03:51:36 PM

Thanks for the clear response.

Storm_X · February 13, 2011, 06:47:14 PM

I use BP98 90% of the time but im trying to also use e10/100

Sheldon McIntosh · February 13, 2011, 09:34:51 PM

Quote from: Storm_X on February 13, 2011, 06:47:14 PM
I use BP98 90% of the time but im trying to also use e10/100

Doesn't E10 ruin carbs and various seals on older cars? I assume you're running carbs?

This could be an urban myth, I'm sure a friendly chemist will be along soon to correct me.

In the meantime I don't use Ethanol in any of my Alfas.

dehne · February 13, 2011, 09:59:32 PM

i have ran E10 in my 90 before just because i had no option it did go ok and fuel consumption was good but i could not bring myself to keep using it, prefer shell optimax

philpot · February 13, 2011, 10:25:04 PM

Yes, I'm with sheldon on that one. But a mate who has a treasure trove of cars (into Fiats: 1919, 1926, 500, Bambino, 128 sedan) including a De Dion Bouton (1914 i think by memory), swore by the United Boost 98. No longer available in Vic anyway, it had 10% ethanol, and he reckoned it was the only thing that would stop one of his trucks, yes into trucks and tractors, pinging. Said of all of the other 98 RON brands of fuel only the Boost 98 would work in his Commer truck with Humber Super Snipe engine....

He used to run all his vehicles on it and Quote: " despite all the predictions of doom and gloom and the sky falling, never have had any problems with fuel lines, filters, hoses, anything..."

In all but QLD by Uniteds' web site now, Boost 98 has been replaced by non-ethanol 98 RON Unleaded.

Fuel for thought...

Never did try it in my alfas though...

PS: Jeez Dehne! It hasn't been Optimax for years man!!!

The old blue pump has been red V-power for yonks!

The RON of e10 is not comparable with 98 Fuels like BP Ultimate; Shell V-Power; Mobil Synergy 8000; Caltex Vortex 98...

NB: Just googled Shell E-10. RON is 94...less than old plain 'Premium' unleaded, which is 95.

philpot · February 13, 2011, 10:46:43 PM

Oh, for those who dont know of the Mate 'Ron' I keep talking about...the Acronym 'RON' is Research Octane Number or the rating of a fuels "anti knock rating or resistance to detonation".

ULP or Unleaded is RON 91; E-10 is RON 94; Premium is RON 95; High Octane Premium RON 98. Plus, Shell V-Power 100 as well: RON 100...which contains 5% Ethanol; though I've read this is no longer available (?)

NB: United now list a 'Premium 100', with 10% Ethanol at six sites in VIC; 12 in SA and 1 in NSW. But, only three on home page. Albury, Bayswater and Blacktown...

NB:2: Boost 98 is listed as available at 18 NSW outlets and 1 in SA, though in good old 'conflicting information mode' on home page say its now only available in QLD...go figure!

Even the manufacturers/retailers are giving conflicting information

Storm_X · February 17, 2011, 09:28:51 PM

where is the boost 98 located in Adelaide ?? i have heard about it before i think its near Adelaide airport.

whats the difference between ultimate 98 and boost 98.

oh and used E10/100 once

philpot · February 26, 2011, 11:56:37 AM

Hi Storm, google united petroleum website for the sites, if the info is accurate!

Maybe try ringing local distributor?

Not a chemist either, but, BP Ultimate like all other 'Pure' 98 RON Fuel is more highly refined to obtain the Octane figure, whereas Boost 98 or the like is 'Topped up' with ethanol to boost (?) octane. Then you get into the whole fuel density debate....not going there !

Footnote: United reckon their 'base' E-10 is 95RON...one point higher than Shell...

NB: all the old Mobil sites in this area have been taken over by United...