Shell Optimax Vs Bp Ultimate

[RB SANDY]

Can anybody comment on their experiences with these fuels.

[ish]

i believe of the top of my head there is a .1 Ron difference...

Nothing you would be able to tell!

[fritter]

I have until recently always had wrx's. I always run a knocklink on my engine. There have been many cases when I have filled up on optimax that my knocklink has indicated detonation. I used to not care too much about what fuel i was using except that it had to be 98 RON. After making a decision about 9 months ago not to use optimax again I ahve never had a problem with detonation, or atleast the knocklink didnt pick it up.

In short I think BP make an equal product to Optimax but they make it consistantly where shell dont.

[R32Abuser]

I reckon BP Ultimate or Mobil 8000 (purple) is the goods. That has just been by hearsay but only good thing about Shell that i have herd is that it gets you more km's to the litre, but its through all additives which can cause greater knock. Thats just what ive herd so by no means take it as fact.

[RB SANDY]

The shell does give me more km (interesting).

[Bluprint]

I'm not a fan of optimax, I tried it once or twice, neither of the 2 engines I've used it on liked it very much.

Nowadays I use Ultimate only but Mobil Synergy seems to be pretty decent stuff as well.

[R32Abuser]

mmm i think the difference between Mobil syn and BP Ultimate is almost negligable. Interesting if anyone else has any commments on this??

[AndyMac]

Word Of Mouth & Testing Fact.

Shell has alot of cleaning agents added too the mix. These additives make the engine poor poorly, but cleans your engines.

I had too have my fuel tested one day, I was using Shell, the tester commented that the optimax fuel tends too have lower oxygen rating, and for performance, mobil or bp where perferred.

Caltex Vortex isn't a bad mix either.

[siddr20]

^^ yup i use vortex and the car seems fine.. Well i have no idea how to check lol.. Car runs smoothly so thats how i can test it and thats all i care about..

[marchGTR]

previously i had never really thought there was much difference between the 98ron fuels. however in my new gtr I have consistantly noticed the car doesnt run as well on optimax. initially i thought it was just a bad batch of fuel however i have nismo boost dials which consistantly dont peak as high when using optimax as compared to other fuels (vortex,ultimate or even extreme) and the car feels more sluggish on optimax.

Edited July 17, 2006 by marchGTR

[Sydneykid]

You guys are dreaming, do a search on refinery sharing.

cheers

[Modena]

For me:

Optimax is always cheaper but BP ultimate seems to give me better milage!

[TracidTrax]

u will find that 90% of us r running BP ultimate

[Sydneykid]

For me:

Optimax is always cheaper but BP ultimate seems to give me better milage!

Since you are in Melbourne, due to refinery sharing they are both made at the Shell refinery at Geelong.

ie; there is no BP refinery in Victoria

cheers

Edited July 17, 2006 by Sydneykid

[Apollo S15]

I used to us Optimax and it worked fine, but there was always a sulphur smell from my exhaust.

Started using BP Ultimate and it does seem to feel better (may be my imagination) and there is no more sulphur smell.

[mr_r33gtst]

Used to run on optimax, until one day evertime i hit about 5 psi the car would keep pinging, since then i've stuck to ultimate, and seems fine.

[AndyMac]

Since you are in Melbourne, due to refinery sharing they are both made at the Shell refinery at Geelong.

ie; there is no BP refinery in Victoria

cheers

Everyone knows this.

Explain why on multiple occassions Shell reads a lower oxygen rating and slower lap times then other PULP ? I think you might find, and correct me if I'm wrong with proof, that each company also adds there own special mixes too the fuel at the same refinery.

Or... ring a marine shop, and ask them what fuels they suggest you use and WHY.....

[eMsta]

using ultimate - better mileage for some reason.....

[hanyou]

i use bp ultimate majority of the time... if not mobil synergy 8000 if i cant find a bp..

[QIKEXT]

hey guys what do you thin about shell extream 100 RON with 5% ethonol?