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Old 11th September 2008, 22:06   #181
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Opel at least in the old astra HIGHLY recommends premium fuel with additives
Did we have premium fuel in 1996-97 when the astra was launched? AFAIR unleaded fuels had turned up around 1995.

The only thing i remember opel recommended was the SYSTEM-G which really did effect the performance for some reason.
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Old 12th September 2008, 00:06   #182
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Default Premium Fuel mandatory

I heard in few days at all petrol pumps we will be getting only premiun Fuel.Ordinary fuel bandh
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Old 12th September 2008, 16:47   #183
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Originally Posted by noidaboy View Post
Did we have premium fuel in 1996-97 when the astra was launched? AFAIR unleaded fuels had turned up around 1995.

The only thing i remember opel recommended was the SYSTEM-G which really did effect the performance for some reason.

I distinctly remember the 97 OCT petrol was available even in the early 80's. As I have used it myself
I used to run my Astra in 99 with regular petrol & System-G cocktail. That I think was prmarily to control gumming of the injectors. Used to find it funny but followed the advice of the showroom religiously. Once in a while I used to skip - if the System-G was not available at a pump & my supply bottle in the trunk had run dry !!







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Old 12th September 2008, 20:21   #184
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Originally Posted by Ricky_63 View Post
That I think was prmarily to control gumming of the injectors. Used to find it funny but followed the advice of the showroom religiously.
Yup System G was recommended by Opel to prevent gumming at injectors, this was a major issue with the car, especially in smaller towns where the quality of petrol was an issue.

Ford also recommends System G (even now) for the same reason.
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Old 12th September 2008, 21:15   #185
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have been using premium in my palios so far no ill effects. i find that there is less knocking at low rpms compared to regular which is why i am sticking to it
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Old 12th September 2008, 21:31   #186
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I used turbojet for some time and have now switched back to regular diesel (both from the HP outlet at BKC), and it feels that the engine runs smoother on regular diesel.
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Old 13th September 2008, 13:57   #187
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Originally Posted by Ricky_63 View Post
I distinctly remember the 97 OCT petrol was available even in the early 80's. As I have used it myself
Glad you brought that up. Let us distinguish between premium petrols and high octane fuel. General use of premium branded fuels on this forum means petrol with additives.

Unfortunately, oil co's have started selling high octane petrol only with additives. For high-end cars running high-compression engines, there isn't a choice. However, I do not recommend premium additive-based fuels for the regular breed of sedans / hatches.
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Old 13th September 2008, 15:34   #188
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here at porsche, our workshop manager only recommends the 97 octane fuel which is why even our demo cars and personal cars get the 97 octane dose.
not too sure of the quality of the premium fuels.
it will vary very drastically from one gast station to another.
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Old 13th September 2008, 16:09   #189
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Quote:
Originally Posted by GTO View Post
Glad you brought that up. Let us distinguish between premium petrols and high octane fuel. General use of premium branded fuels on this forum means petrol with additives.

Unfortunately, oil co's have started selling high octane petrol only with additives. For high-end cars running high-compression engines, there isn't a choice. However, I do not recommend premium additive-based fuels for the regular breed of sedans / hatches.


I am not so sure. We get regular 87 OCT, then premium which I think is 91-93 OCT & then there is 97 OCT. Those are the 3 kind of variants in petrol available here in NCR / Delhi.

The 97 OCT is priced way above the normal petrol (almost Rs. 10-12 more than regular). I do not think the 97 has additives though - I am not really sure. I have used 97 even on my lancer (once in a while) & it does run smoother & has improved pick up. Never noticed any ill-effects



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Old 13th September 2008, 17:32   #190
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I have 2 diesel cars and have been using premium diesel mostly except when i cant find but I find no difference at all between the two.
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Old 13th September 2008, 17:36   #191
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The funny thing is after switching from 91 to ordinary i find the car runs smoother,also people who notice knocking after switching from 91 should reset their ecu.
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Old 19th September 2008, 18:35   #192
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I used to use Shell, with additives, and there was a perceptible difference. The starts were easier and the engine ran smoother. The beat of the engine changed automatically. But, the cost is prohibitive

Now a days if you go into Shell, even the attendants think you must have lost your head

In my opinion, the older generation vehicles are good on unleaded and the newer generation ones need petrol/diesel with additives. And by old and new I mean carburetted and fuel injected ones
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Old 19th September 2008, 19:39   #193
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Originally posted by : TheARUN

"I used to use Shell, with additives, and there was a perceptible difference. The starts were easier and the engine ran smoother. The beat of the engine changed automatically. But, the cost is prohibitive

Now a days if you go into Shell, even the attendants think you must have lost your head

In my opinion, the older generation vehicles are good on unleaded and the newer generation ones need petrol/diesel with additives. And by old and new I mean carburetted and fuel injected ones"


Arun, so you mean that an MPFI Aulto or Indica or Indigo also requires petrol or diesel with additives ?

Indica, Indigo and Alto owners come up .. do you guys use premium branded fuels or fuel with additives too ?

My Indica manual says to use "pure unleaded petrol" only.Plus, they recomend you to use System G to enhance miealage and not performance.
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Old 19th September 2008, 19:53   #194
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All i was trying to say was that speed and power and stuff like that help keep new generation engines clean

The caubeuretter ones won't have too much of an improvement with these fuels

The unleaded fuel available nowadays is much superior than the fuel peddled when these vehicles were made. A 95 model vehicle is able to get much purer fuel now, than in 95
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Old 19th September 2008, 20:10   #195
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First time on Team BHP, that someone said that more speed and power keeps an engine clean. Okay, i accept it. But whats the relation with speed and power with keeping the engine clean ? What you are trying to say is :

more speed + more power = a clean engine
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