95 or 98 RON?

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95 or 98 RON?

Post by Z4 COUPSTER » Wed May 16, 2018 1:51 pm

Just a,quick one. Anyone notice a marked difference in the 3.0si with super, on performance and economy? Or do most do as I do which is give a boost of 98 every couple of tankfulls. Not done on the Coupe yet, hence is it worth the extra bucks.
D
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95 or 98 RON?

Post by Smartbear » Wed May 16, 2018 2:06 pm

Z4 COUPSTER wrote:
Wed May 16, 2018 1:51 pm
Just a,quick one. Anyone notice a marked difference in the 3.0si with super, on performance and economy? Or do most do as I do which is give a boost of 98 every couple of tankfulls. Not done on the Coupe yet, hence is it worth the extra bucks.
D
You won’t see a noticeable improvement increase on a normally aspirated engine but it’s the engine cleaning detergent properties of super unleaded which are worth having-lots on here about this topic :thumbsup:
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95 or 98 RON?

Post by Z4 COUPSTER » Wed May 16, 2018 2:08 pm

Thanks bud. Tbh I normally throw a tank full in once in a while. It never hurts that's for sure. I'll search nxt time.
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95 or 98 RON?

Post by andyf1140 » Wed May 16, 2018 2:18 pm

It really depends on the engine management system, if it can tune the fueling and timing based on the lambda and anti-knock sensors then you will see a difference in performance and economy. The question is how intelligent are the BMW ECU's :D

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95 or 98 RON?

Post by hopz121 » Wed May 16, 2018 2:27 pm

98 always for me either V Power or Momentum :)

Well worth the extra IMO
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95 or 98 RON?

Post by ph001 » Wed May 16, 2018 2:29 pm

EXTRA! EXTRA!... read all about it... viewtopic.php?f=2&t=102010&hilit=octane
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95 or 98 RON?

Post by Z4 COUPSTER » Wed May 16, 2018 2:50 pm

ph001 wrote:
Wed May 16, 2018 2:29 pm
EXTRA! EXTRA!... read all about it... viewtopic.php?f=2&t=102010&hilit=octane
Cheers.
D
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95 or 98 RON?

Post by JamieZ4C » Wed May 16, 2018 3:13 pm

Shell V Power for me. There's a Shell garage on the way out of my village, so it's very convenient, and the extra cost is negligible when my annual mileage of <3000 is taken into consideration. So a no-brainer for me and my circumstances.

Plus when pedal goes to metal I like to think that I didn't leave any of the horses in the stable!
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95 or 98 RON?

Post by RickRob » Wed May 16, 2018 3:35 pm

I always put Shell V Power or BP Ultimate in the Zed and the Cooper S. The Discovery makes do with normal diesel.

With 98 grade you get the pops in the exhaust on over run, but not with 95 grade. :)
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95 or 98 RON?

Post by ph001 » Wed May 16, 2018 3:41 pm

RickRob wrote:
Wed May 16, 2018 3:35 pm
With 98 grade you get the pops in the exhaust on over run, but not with 95 grade
Interesting observation...I've got 95 RON in at the moment so I will see if mine is same.
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95 or 98 RON?

Post by ErrErrminator » Wed May 16, 2018 3:55 pm

Sorry - double post! :?
Last edited by ErrErrminator on Wed May 16, 2018 3:57 pm, edited 1 time in total.

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95 or 98 RON?

Post by ErrErrminator » Wed May 16, 2018 3:56 pm

RickRob wrote:
Wed May 16, 2018 3:35 pm
With 98 grade you get the pops in the exhaust on over run, but not with 95 grade. :)
I'm on my second tank since collecting my 2.5 and so far I have just used standard 95. I will probably put a tank of 98 through it once in a while. With the exhaust back-box mod on mine with boggo 95 it pops and crackles like a good-un anyway. Maybe with the 98 it'll go one step further and spit flames! :lol:

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95 or 98 RON?

Post by R60BBA » Wed May 16, 2018 5:37 pm

I don’t notice a difference in power but I do in economy.

The exhaust note is also louder with V Power.
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95 or 98 RON?

Post by RustyZ4 » Wed May 16, 2018 5:42 pm

I have run my 2.8 on both, and definitely get better MPG on 98 RON, cant say I notice any power difference,
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95 or 98 RON?

Post by Z4 COUPSTER » Wed May 16, 2018 7:22 pm

RustyZ4 wrote:
Wed May 16, 2018 5:42 pm
I have run my 2.8 on both, and definitely get better MPG on 98 RON, cant say I notice any power difference,
This is,what I was thinking. Noticed a lot on previous cars with economy and a little more punch.
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