Jump to content
SAU Community

Shell Optimax Vs Bp Ultimate

RB SANDY
 Share

Recommended Posts

fritter Contributor

fritter

Posted
Posted

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 Mentor

R32Abuser

Posted
Posted

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.

Bluprint Veteran

Bluprint

Posted
Posted

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.

AndyMac Experienced

AndyMac

Posted
Posted

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.

marchGTR Collaborator

marchGTR

Posted
Posted (edited)

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 by marchGTR
Sydneykid Grand Master

Sydneykid

Posted
Posted (edited)
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

:wave: cheers :(

Edited by Sydneykid
AndyMac Experienced

AndyMac

Posted
Posted
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.....

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • uchoa
      Howdy from the states.

      By uchoa · Posted

      To be determined, Luke, to be determined. 😁 Definitely the car
    • Duncan
      S1 headlights?

      By Duncan · Posted

      It might be worth having a good look at the chassis behind the bumper then; most people prefer the series 2 look so it might have been changed to cheaper parts as part of an earlier repair
    • Celticsfan03
      S1 headlights?

      By Celticsfan03 · Posted

      The car itself a series 2. I was just curious about the headlights and just wanted to confirm that they were series 1. Good to know the rest of the front end is series 1. It’ll be easier for me to find parts on the aftermarket side of things lol
    • WMDC35
      R34 engine swap Rb25de neo to s1 Rb25det

      By WMDC35 · Posted

      If you've wired up the coils & injectors properly, & have the neo CAS loom for the trigger, it should all work. The VCT works the same way so just different plugs between s1 & neo. Assuming DBW if no IAC. Don't bother with the stock boost solenoid with g4x.
    • GTSBoy
      R34 engine swap Rb25de neo to s1 Rb25det

      By GTSBoy · Posted

      THERE IS NO IAT SENSOR ON ANY SINGLE TURBO RB. And the one on an RB26 is not for "engine control" - it's really too big and too slow and is only used for over-temp alarming (as far as I can tell). Anyway, you don't have one. You want/need one for the Link, then you need to buy one, find a spot for it, and wire it in. You do know that the stock boost solenoid is not capable of "control", right? It is merely on or off, for the low boost (5 psi) and high boost (7psi), which the ECU enforces mostly based on gear. The stock solenoid is not for PWM control and is not plumbed up in a way to provide it. If you want to control boost properly, then you need a proper MAC valve. And yes, you can wire either of them direct to the ECU. Well, I assume you can - I don't know what the boost solenoid pins on the plug and play Link are capable of. They really should be as capable as any normal Link - but seeing as it is plg and play, it might be limited to stock functionality. Read the doco.   You really do just want to plug stuff together without understanding how it works, right? I can't help you there. I don't know the plug types or pinning on half the stuff you're asking about. If I had to do it I would sit down with the wiring diagrams, the car/looms and a multimeter and work out what is what.
×
×
  • Create New...