Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 | 3 | 4 | 5
Awesome
4780 posts

Uber Geek
+1 received by user: 1059

Trusted
Subscriber

  Reply # 1483347 2-Feb-2016 10:38
3 people support this post
Send private message

BTR: Its amazing the amount of people that don't understand which petrol they should be putting into their cars. I've come across so many people that use 91 because its the cheapest.

 

Using the wrong fuel can damage your engine and actually give you worse mileage than using the correct fuel.

 

While that is true, most cars sold or imported into NZ will work perfectly on 91 (or less) octane fuel, and for those cars, going to a higher octane rating is literally just throwing money away and in fact will result in (ever so) slightly worse mileage.

 

Only some euro's and high performance cars genuinely need higher octane fuel. Octane rating is about ignition profile and resistance to knock, not about power/energy/cleanness of fuel as many people think. In fact higher the octane, the less 'bang'. Most reasonably modern cars that will 'knock' on lower octane rated fuels will adjust timing to compensate, preventing any damage at the cost of economy. All the ads on TV about getting better mileage on higher octane fuels are really only true if your car is adjusting timing to prevent knock.

 

 

 

 





Twitter: ajobbins


5446 posts

Uber Geek
+1 received by user: 1548

Trusted

  Reply # 1483348 2-Feb-2016 10:41
Send private message

networkn:

 

I paid $0.69c for Diesel in Auckland last night, a week ago I paid $59c with a discount coupon. I managed to get Auckland - Taupo, Rotorua, Hamilton, and back to Auckland on my tank, which was awesome considering it's a Twin Turbo!

 

 

 

 

Twin turbo doesn't always mean more fuel! With VTG and other technologies they are way more efficient. Anyhow a diesel turbo is much more economic than a non turbo and a petrol.

 

How ever, My Audi was "Bi turbo" and used a lot of fuel, Over 25L/100KM on an average day.

 

 


 
 
 
 


5446 posts

Uber Geek
+1 received by user: 1548

Trusted

  Reply # 1483350 2-Feb-2016 10:42
One person supports this post
Send private message

ajobbins:

 

BTR: Its amazing the amount of people that don't understand which petrol they should be putting into their cars. I've come across so many people that use 91 because its the cheapest.

 

Using the wrong fuel can damage your engine and actually give you worse mileage than using the correct fuel.

 

While that is true, most cars sold or imported into NZ will work perfectly on 91 (or less) octane fuel, and for those cars, going to a higher octane rating is literally just throwing money away and in fact will result in (ever so) slightly worse mileage.

 

Only some euro's and high performance cars genuinely need higher octane fuel. Octane rating is about ignition profile and resistance to knock, not about power/energy/cleanness of fuel as many people think. In fact higher the octane, the less 'bang'. Most reasonably modern cars that will 'knock' on lower octane rated fuels will adjust timing to compensate, preventing any damage at the cost of economy. All the ads on TV about getting better mileage on higher octane fuels are really only true if your car is adjusting timing to prevent knock.

 

 

 

 

 

 

 

 

I told off a guy at Gull for 2 things.

 

Putting 91 into a new RS4 and using Gull.. (Ethanol blending reasons)


Awesome
4780 posts

Uber Geek
+1 received by user: 1059

Trusted
Subscriber

  Reply # 1483352 2-Feb-2016 10:43
2 people support this post
Send private message

TimA: I told off a guy at Gull for 2 things.

 

Putting 91 into a new RS4 and using Gull..

 

Don't Gull also mix ethanol into their fuel? That is another false economy.

 

Edit: I see you added the ethanol comment. Yes, ethanol is a waste of money at best, and will genuinely damage some engines not designed to handle it.





Twitter: ajobbins


7224 posts

Uber Geek
+1 received by user: 2289

Subscriber

  Reply # 1483357 2-Feb-2016 10:55
Send private message

1.529 in some places in Auckland while others are 1.829

 

 


7224 posts

Uber Geek
+1 received by user: 2289

Subscriber

  Reply # 1483375 2-Feb-2016 11:04
Send private message

Caltex in Auckland are also very bad for having higher prices on 95. They will have 91 for 1.529 and 95 for 1.729, where as shell, mobil and BP will have 95 for 1.629.

 

guess it comes back to covering there margins on the cheaper 91


25833 posts

Uber Geek
+1 received by user: 5557

Moderator
Trusted
Biddle Corp
Lifetime subscriber

  Reply # 1483377 2-Feb-2016 11:06
Send private message

ajobbins:

 

BTR: Its amazing the amount of people that don't understand which petrol they should be putting into their cars. I've come across so many people that use 91 because its the cheapest.

 

Using the wrong fuel can damage your engine and actually give you worse mileage than using the correct fuel.

 

While that is true, most cars sold or imported into NZ will work perfectly on 91 (or less) octane fuel, and for those cars, going to a higher octane rating is literally just throwing money away and in fact will result in (ever so) slightly worse mileage.

 

Only some euro's and high performance cars genuinely need higher octane fuel. Octane rating is about ignition profile and resistance to knock, not about power/energy/cleanness of fuel as many people think. In fact higher the octane, the less 'bang'. Most reasonably modern cars that will 'knock' on lower octane rated fuels will adjust timing to compensate, preventing any damage at the cost of economy. All the ads on TV about getting better mileage on higher octane fuels are really only true if your car is adjusting timing to prevent knock.

 

 

 

Both my old and new Focus both need 95. They both run horribly on 91. In Europe 95 is the standard Fuel so most Euro engines are designed for 95 or greater.

 

 


414 posts

Ultimate Geek
+1 received by user: 97


  Reply # 1483384 2-Feb-2016 11:08
Send private message

ajobbins:

 

BTR: Its amazing the amount of people that don't understand which petrol they should be putting into their cars. I've come across so many people that use 91 because its the cheapest.

 

Using the wrong fuel can damage your engine and actually give you worse mileage than using the correct fuel.

 

While that is true, most cars sold or imported into NZ will work perfectly on 91 (or less) octane fuel, and for those cars, going to a higher octane rating is literally just throwing money away and in fact will result in (ever so) slightly worse mileage.

 

Only some euro's and high performance cars genuinely need higher octane fuel. Octane rating is about ignition profile and resistance to knock, not about power/energy/cleanness of fuel as many people think. In fact higher the octane, the less 'bang'. Most reasonably modern cars that will 'knock' on lower octane rated fuels will adjust timing to compensate, preventing any damage at the cost of economy. All the ads on TV about getting better mileage on higher octane fuels are really only true if your car is adjusting timing to prevent knock.

 

 

 

 

 

 

Agreed. Spoke to the main dealer of our car (Holden Cruze 1.4 ITi Turbo) not long after we got it and asked if running it on 95 as opposed to 91 would make any difference. His answer, you'd have to be a monumental car nut to notice any difference in performance\economy. Although you would notice the dent in your wallet due to the higher price.

 

The only petrol I won't put in this car is the Mobil 91, due to the ethanol in it.

 

Around Johnsonville in Wellington BP & Z are 1.829, Mobil is 1.809 and the independent challenge was still 1.799


5256 posts

Uber Geek
+1 received by user: 2492


  Reply # 1483392 2-Feb-2016 11:14
Send private message

Plenty of NZ new and import cars need premium 95/98 octane, not just Euro and not just performance cars.  With petrol direct-injection prone to carbon build-up on intake valves which is relatively expensive to fix properly (removal of manifolds and cleaning) even if the engine management system prevents knocking/pre-ignition damage, it's not worth the risk.  Don't assume that because the NZ new model is specified to run on regular that this means the apparently "same model" import is also specified to run on regular.  With many Euros, IIRC, they're specified for 96 RON.  Better to go for BP 98 RON IMO than "premium" 95 RON from other fuel companies.


916 posts

Ultimate Geek
+1 received by user: 222

Trusted
Subscriber

  Reply # 1483409 2-Feb-2016 11:31
Send private message

MikeB4: Yuck only 91, won't be using it.

 

 

 

What's wrong with 91... most modern engines are tuned for it.





Kirk

 


5446 posts

Uber Geek
+1 received by user: 1548

Trusted

  Reply # 1483416 2-Feb-2016 11:38
Send private message

kharris:

 

MikeB4: Yuck only 91, won't be using it.

 

 

 

What's wrong with 91... most modern engines are tuned for it.

 

 

 

 

You shouldnt group modern cars by saying "Most"

 

NZ new cars will say the minimum octane you can use inside the fuel flap.

 

Never assume. Otherwise you make an "Ass of U and ME"


829 posts

Ultimate Geek
+1 received by user: 54


  Reply # 1483425 2-Feb-2016 11:49
Send private message

I can only use 98 so only options are BP and Mobil (manufacture says only to use 95 as a last measure). Cant use Gull as it has Ethanol and manufacturer say no to that as well. cry Prices seem to be much higher with 98 as I was shocked at how much cheaper it was to fill up the wife's massive Commodore tank with 91.


5446 posts

Uber Geek
+1 received by user: 1548

Trusted

  Reply # 1483426 2-Feb-2016 11:50
Send private message

myopinion:

 

I can only use 98 so only options are BP and Mobil (manufacture says only to use 95 as a last measure). Cant use Gull as it has Ethanol and manufacturer say no to that as well. cry Prices seem to be much higher with 98 as I was shocked at how much cheaper it was to fill up the wife's massive Commodore tank with 91.

 

 

 

 

What vehicle is that?


829 posts

Ultimate Geek
+1 received by user: 54


  Reply # 1483428 2-Feb-2016 11:51
Send private message

996


916 posts

Ultimate Geek
+1 received by user: 222

Trusted
Subscriber

  Reply # 1483429 2-Feb-2016 11:53
Send private message

myopinion:

 

I can only use 98 so only options are BP and Mobil (manufacture says only to use 95 as a last measure). Cant use Gull as it has Ethanol and manufacturer say no to that as well. cry Prices seem to be much higher with 98 as I was shocked at how much cheaper it was to fill up the wife's massive Commodore tank with 91.

 

 

 

 

My massive commodore take also likes 91 and the engine is designed to run on it even though it is a 6 litre V8.

 

91-octane is premium fuel... it is not low octane... other countries sell lower octane fuels (as low as 85)

 

What do you drive that requires 98?

 

 





Kirk

 


1 | 2 | 3 | 4 | 5
View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

New Zealand's IT industry in 2018 and beyond
Posted 22-Jan-2018 12:50


Introducing your new workplace headache: Gen Z
Posted 22-Jan-2018 12:45


Jucy set to introduce electric campervan fleet
Posted 22-Jan-2018 12:41


Hawaiki cable system will be ready for service in June 2018
Posted 22-Jan-2018 12:32


New Zealand hits peak broadband data
Posted 18-Jan-2018 12:21


Amazon Echo devices coming to New Zealand early February 2018
Posted 18-Jan-2018 10:53


$3.74 million for new electric vehicles in New Zealand
Posted 17-Jan-2018 11:27


Nova 2i: Value, not excitement from Huawei
Posted 17-Jan-2018 09:02


Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15


Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37


Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59


Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42


New Chief Technology Officer role created
Posted 19-Dec-2017 22:18


All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54


How clever is this: AI will create 2.3 million jobs by 2020
Posted 19-Dec-2017 19:52



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.