shell premium v mobil premium

[daz66]

Brands of fuel

Hmmmmmmmm......before I saw the light and got my Golf TDI, I had a Magna 3.5 with a few mods (chip, exhaust, ported & polished heads). My mechanic said much the same as what I've been reading in here - Mobil & BP both good, cars were coming in and had issues with Caltex and to a lesser extent Shell. Actually listed on my last service docket before I gave the car the flick to use Mobil Synergy 8000 where possible...I always thought petrol was petrol, but it would seem this isn't always so.

[425i]

fuel

Caltex supply all the fuel to mobil petrol stations in sydney.
In Sydney all bp fuel except the 98 octane is shell fuel.
Shell v power 98 is the highest octane 98 fuel on the market and has the highest power density as well.
The higher the power density the more power per litre of fuel and if you dont leadfoot it then the more mileage per tank
I know this because I have seen it tested in the Mon/Ron engine also I have a high compression V8 with a lot of advance and this engine really lets you know what fuel its drinking.
I buy mobil as a last choice as there 98 is only just 98 octane where as the shell 98 is always more than 98 sometimes its basially 99 octane fuel plus the shell has the higher power density.
I never ever buy woolies fuel
The big petrol stations all ways have there own fuel ie a big shell has shell fuel. It can be a different thing in smaller stations. I bought some 95 octane from a small BP the other day and the car pinged its head off. so i was ripped off as it wasnt 95 at all.
One difference between the fuels is the additives they put in to clean deposits from the injectors. Each additive cleans certain things only so switching fuels after using only one brand for a long time can account for the sudden surge in performance as the new fuels different cleaning additives will clean out what the other hasnt.
I have been using the 98 octane ethanol fuel as it has a really good octane rating and its cheap . Its only draw back is it hasnt got the same power density because ethanol has a low power density than the hydrocarbons used in petrol. when I am plodding to work i allways use the ethanol blend but if Im going for a zoom or towing then in goes the V power.
having said all of the above if you have a low compression engine then it doesnt really natter what you put in it

Nick

[Mario]

Hmmmm.. maybe i got a bad batch..... ill try the V power again... wasnt impressed first time round...

mario

Caltex supply all the fuel to mobil petrol stations in sydney.
In Sydney all bp fuel except the 98 octane is shell fuel.
Shell v power 98 is the highest octane 98 fuel on the market and has the highest power density as well.
The higher the power density the more power per litre of fuel and if you dont leadfoot it then the more mileage per tank
I know this because I have seen it tested in the Mon/Ron engine also I have a high compression V8 with a lot of advance and this engine really lets you know what fuel its drinking.
I buy mobil as a last choice as there 98 is only just 98 octane where as the shell 98 is always more than 98 sometimes its basially 99 octane fuel plus the shell has the higher power density.
I never ever buy woolies fuel
The big petrol stations all ways have there own fuel ie a big shell has shell fuel. It can be a different thing in smaller stations. I bought some 95 octane from a small BP the other day and the car pinged its head off. so i was ripped off as it wasnt 95 at all.
One difference between the fuels is the additives they put in to clean deposits from the injectors. Each additive cleans certain things only so switching fuels after using only one brand for a long time can account for the sudden surge in performance as the new fuels different cleaning additives will clean out what the other hasnt.
I have been using the 98 octane ethanol fuel as it has a really good octane rating and its cheap . Its only draw back is it hasnt got the same power density because ethanol has a low power density than the hydrocarbons used in petrol. when I am plodding to work i allways use the ethanol blend but if Im going for a zoom or towing then in goes the V power.
having said all of the above if you have a low compression engine then it doesnt really natter what you put in it

Nick

[docjames]

Having run muliple fuels in multiple cars, from V8s, I6Ts, Polo ('99), Golf 2L, Jaguar X-type, e46 BMWs etc (i can go on)

Across all the readily available fuels, BP Ultimate is consisntely the best for power and smoothness. Economy seems comparable to any of the others.

Second choice would be Mobil 8000.

Optimax/V-power would be my last choice. Cant really vouch one way or the other for Caltex 98 as it's not widely available near where i live.

No great evidence, just multiple different cars running consistently better on Ultimate than any of the others.

[Golf Houso]

I live 30 meters from a shell and fill up there regularily, since I live so close I buy fuel when its at its very cheapest and get 98'. Although I have tried V-power racing (don't laugh) on my GL, its alot better, peak or close to peak torque came in at abour 200-300 rpm less.

Although I have used BP and mobil 98 fuels, if they're 98, then shell must be 96-97 because there is a considerable difference in the fuels.

But yeah yet again price makes the biggest contribution, and being so close its hard to do otherwise.

[goodfella]

I ran a personal test... I have always swayed to Shell VPower but for 1 month (Nov) I ran BP U98 and now switched back.

I found the Shell to give slightly better performance, and strangely I was getting less fuel economy (18L/100 mth avg) vs 15L/100 avg I am getting on SHell.

Don't know if my V6 is reacting better to the Shell or just me?! Either way, I pass 3 shells on the way to work and BP is in the opposite direction, so I will stick to Shell.

[The_Hawk]

I found the Shell to give slightly better performance, and strangely I was getting less fuel economy (18L/100 mth avg) vs 15L/100 avg I am getting on SHell.

What are you driving to get those figures? 4x4?

Just seems pretty high... my VR6 is using in the high 12.x's, but then I drive it like it should be

[DIDZ]

I ran a personal test... I have always swayed to Shell VPower but for 1 month (Nov) I ran BP U98 and now switched back.

I found the Shell to give slightly better performance, and strangely I was getting less fuel economy (18L/100 mth avg) vs 15L/100 avg I am getting on SHell.

Don't know if my V6 is reacting better to the Shell or just me?! Either way, I pass 3 shells on the way to work and BP is in the opposite direction, so I will stick to Shell.

VPower I've only found to be good to use for a day at most (for a cruise or longer trip) before it's performance drops down to Mobil/BP/Caltex @ 98 RON. The heat, and time in the tank kills the octane value pretty quick.

It's like driving with a full tank at the start of the week, and running like a dog come Friday. But only it's on the next day with VPower.

I run BP Ultimate and Mobil 8000 as my second choice.

[Golf Houso]

I choose V-power... purely on the basis that its like 6-7 doors down ie. 9 second trip in the car

Its always higher than the BP down the road, but you end up paying less for premium in the end. I can notice a neglible difference between BP 95 and 98 shell, but we're talking about the 2.slow here. Hardly a difference

[blutopless2]

i use mobil 8000 in all my cars. mostly out of habit as some cars i have fuel cards for but also i have found through testing that it makes the cars run better and i get more ks to a tank.

[REDMKVGTI]

I've been running ultimate for a little while now, and I've gotta say the car feels a lot better. I found when using shell, during hard acceleration (in my MKV GTI) the car had a bit of a flat spot, almost like a hesitation which was really noticeable. This has completely cleared up with the ultimate.

As far as my testing goes so far the ultimate is looking good, although I have run significantly less of it, so time will tell.

Shell v power (619.01 liters)
Consumption - 10.50 L/100km
Av cost per liter - 137.10

BP Ultimate (172.67 liters)
Consumption - 9.51 L/100km
Av cost per liter - 148.70

So far (since the 10/05/07 when I purchased my first tank of juice) my baby has cost me $1107.14 in petrol.

[GTI_SYD]

Guys, whilst we're talking fuel, and hopefully I'm not too far off topic, but I'm going to take delivery of my first GTI this week, and as you prob know it takes 98 Oct fuel...so what do I do if I'm ever at a servo that only has regular unleaded? Should I add a boost, in which case, any recommendations?

Cheers!

[Splashalot]

Guys, whilst we're talking fuel, and hopefully I'm not too far off topic, but I'm going to take delivery of my first GTI this week, and as you prob know it takes 98 Oct fuel...so what do I do if I'm ever at a servo that only has regular unleaded? Should I add a boost, in which case, any recommendations?

Cheers!

Mine came from the dealer with a tank of 95RON - it ran fine, but I did notice an improvement in smoothness and throttle response when I filled-up with 98.

The user manual doesn't put any restrictions on using 95, other than stating you may notice a slight decrease in performance as the knock sensor reacts to pinging in some circumstances.

Bottom line is: it runs fine on 95, just not quite as well as it does on 98. However, I wouldn't put 91RON (ULP) in it under any circumstances.

SS

[GTI_SYD]

Mine came from the dealer with a tank of 95RON - it ran fine, but I did notice an improvement in smoothness and throttle response when I filled-up with 98.

The user manual doesn't put any restrictions on using 95, other than stating you may notice a slight decrease in performance as the knock sensor reacts to pinging in some circumstances.

Bottom line is: it runs fine on 95, just not quite as well as it does on 98.

SS

Thanks for that - but isn't regular unleaded something like 91? So if you're stuck with regular and in the middle of nowhere, can you add something to give it the extra octane? In which case does anyone have any suggestions?

Cheers,

[Bubu]

The chances of being somewhere where they dont sell even 95 is quite small. I do a bit of travelling and in the past 5 years I dont ever recall seeing a petrol station without having at least 95 RON, most having 98 RON.

If you are really concerned then you could always carry a bottle of octane booster. If they dont have 95 then they probably wont have octane boosters either.

If your next question is: 'Which brand/type should I buy?' I cannot tell you that its all on personal preferance the same way people prefer V-Power over Ultimate.