Optimax Extreme For R32 Gtst

[TutsR32]

Hi guys I own a 92 R32 Gtst and was wondering if Shell Optimax Extreme is suitable for the car? I have always used Optimax. Has anyone actually Used it and any differences?

Thanks for your help.

[Xizor]

Apparently Optimax extreme is bad for our (skylines) cars. Some report was done in Japan and its now banned or something. No joke.

So far i've found my r33 s2 loves Mobile Synergy 8000 the best.

[Modena]

Apparently Optimax extreme is bad for our (skylines) cars. Some report was done in Japan and its now banned or something. No joke.

So far i've found my r33 s2 loves Mobile Synergy 8000 the best.

Im yet to try full tank of Synergy but so far my R33 loves BP Ultimate... runs better mileage than Optimax... also doesnt have that sulfer smell...

And yes I heard Extreme has ethanol which is a no for Skylines.

Edited April 20, 2006 by Sir-D

[Sydneykid]

We have been running Optimax Extreme in the R33GTST for months. I have removed the filter twice and cut it open to see if there is any hose or pump damage and it was perfectly clean everytime. I have also removed cleaned and flow tested the injectors and they are exaclty as they should be.

So the urban myth that 5% ethanol corrodes rubber hoses is 100% BS.

So the urban myth that 5% ethanol corrodes fuel pumps is 100% BS.

So the urban myth that 5% ethanol destroys fuel injectors is 100% BS.

The R33GTST currently has a Power FC running the default maps, which usually means knock over 60 frequently. With Optimax Extreme in it we rarely see knock over 10, the peak was 25 one cold night. Based on the amount of ingition timing retard we have had to use to get the knock below 30 using 98 ron (ANY 98 ron) that is worth 12 rwkw.

Don't get sucked into the ethanol is bad, that may apply to 20% or higher proportions. But 5% is NOT the same story.

So I see no downsides to using Optimax Extreme and I am not the only one. Check around and you will find plenty of guys using it.

cheers

[WazR32GTSt]

I use it. I love it.

[TutsR32]

I use it. I love it.

great stuff guys thanks for your feed backs. Wazr32 do you have any numbers on mileage etc you doing with optimax extreme?

For now i think ill stick to optimax.

[r32line]

I too have a r32 gts-t and I am convinced that mobil synergy 8000 is the best fuel. I get the most mileage out of it and when i use bp ultimate or shell optimax i tend to notice a stonger smell of petrol when i have car ideling on cool down.

I read an article on ethanol fuels and im pretty sure i remember reading that Nissan had released a statement that Nissan owners of cars pre 2002 (i think) should not use an ethonal fuel of any mixture.

Personally I wouldn't bother with extreme, if you really want more octaneyou could use a octane booster, but again not a lot a point if your car is relatively stock.

(using synergy i got 560km at which point the needle was on Empty but i filled it up and it took 51litres so it wasnt bone dry obviously, but either way thats less than 10lt/100km and on that same tank i had a few runs with my mates g-tech and wasn't exactly puttering around town on Sunday afternoon's.)

Edited April 25, 2006 by r32line

[ISC-Performance]

i always use bp ultimate and never had any issues

[burnsie]

yeah bp ultimate for me... i heard the mobil is owned by bp and the fuels are the same can any back that up or was somone having me on

[Richmond98]

is extream cheaper then normal premium fuels?

[raz0r$harP.UK]

No it's more expensive. Compared to regular Optimax it's anywhere from 3-10c a litre more (in my experience anyway).

[xRHETTx]

Yeah in my opinion Extreme is a rip off.

Its more expensive than Optimax, isn't the point of ethanol blended fuels that they are meant to be cheaper? That 5% ethanol is 5% petrol they dont have to put in (about $5 worth these days for a full tank).

[Ol_Mate]

mobil and bp share storage facilities. so i imagine that the fuel they use is also the same.

Not sure on the ultimate/synergy similarities though.

[kralster]

You'll find that in most cases 95 octane is 7 cents dearer than regular ULP and 98 octane is 10 cents more. And then that optimax ultimate happy fuel is even more. You can't get it in South Australia but i wouldn't mind trying a tank of it.

[croat]

im still really sceptical about using it. As sydneykid says it does not corrode the fuel system etc and he has done tests, i heard that this will only happen after a long period of time. e.g you leave your car near the beach once it wont rust. but after years it will start to show. ?? what does everyone think?

[stasis]

We have been running Optimax Extreme in the R33GTST for months. I have removed the filter twice and cut it open to see if there is any hose or pump damage and it was perfectly clean everytime. I have also removed cleaned and flow tested the injectors and they are exaclty as they should be.

So the urban myth that 5% ethanol corrodes rubber hoses is 100% BS.

So the urban myth that 5% ethanol corrodes fuel pumps is 100% BS.

So the urban myth that 5% ethanol destroys fuel injectors is 100% BS.

The R33GTST currently has a Power FC running the default maps, which usually means knock over 60 frequently. With Optimax Extreme in it we rarely see knock over 10, the peak was 25 one cold night. Based on the amount of ingition timing retard we have had to use to get the knock below 30 using 98 ron (ANY 98 ron) that is worth 12 rwkw.

Don't get sucked into the ethanol is bad, that may apply to 20% or higher proportions. But 5% is NOT the same story.

So I see no downsides to using Optimax Extreme and I am not the only one. Check around and you will find plenty of guys using it.

cheers

Ok guys im barging in into this thread.

Ethanol is good you get higher octane level therefore better combustion=more power. But the downside of is, it actually runs hotter and drier on the piston. So its not good for the engine.

By far as for which brand is better for fuel? I personally have tried every single major brand suxh as Bp, shell and mobil. Mobil is the most powerful (snergy 8000), Bp iltimate is the cleanest and a bit better milage and shell is the worse of all.so...