I have a Caltex Card and a "Motorpass" Card. The Caltex cardgets more use as the Motorpass seems to be a manual transaction wherever I go...

Will try some BP on the Motorpass (which works nearly anywhere) for a couple fo tanks, same with Shell and try my luck.

A.

I have a Caltex Card and a "Motorpass" Card. The Caltex cardgets more use as the Motorpass seems to be a manual transaction wherever I go...

How does the Caltex Vortex compare with, say, Optimax, or Ultra? It's is lower RON than the Optimax (about 95 I think) but still better than standard.

Optimax, all the way, there is none better (as is also shown by the bloody price!!) gets up to 115c sometimes, not real cheap...

My girl has had optimax from day 1, so I can't compare it with any other fuel

What he said. :o

Last time we got premium for the AU it was 89c/l

CHEAP!

but the XR, all we do is fill, then swipe the card! lol

I use optimax , Ive tried the rest and it seems to be smoother on optimax ...probably just my imagination.

Optimax and Ultimate are both blended as high octane Premiums with a RON of 98 units but there are differences in specs which aren't of marketing purposes.

The Optimax is blended as a performance based fuel using blend streams which are more normally used with premuin fuel production but with increased octane (presumably in the Ultraformate stream) and with reduced amounts of gas streams (to increase density and possibly lower the vapour pressure).

The Ultimate Ultraformate stream is further processed to reduce the benzene content. Also reduced with comparison to Optimax is the Sulphur and Aromatics of the fuel. Density, like Optimax, is increased.

So what the hell does it mean: I 'd suggest the Optimax may make slightly more power (maybe a 2 or 3 kW) in a standard XR6T. Where as the Ultimate is blended as the cleanest (read: environmentally friendly) fuel available in Oz with the bonus of having a 98 Ron Octane.

In short, I doubt you'd feel the difference between either fuel.

G'day,

Haven't touched Optimax for my Turbo since I spent $600 bucks getting the injectors on my bike cleaned after putting the three first fuel fills of optimax into it.

The detergents that are (were) in the Optimax fuel disagreed completely with the bike. Therefore there is no way I will ever again use Optimax in a Fuel Injected vehicle. *Overreaction in Progess*

On the flip side however, Optimax makes a difference vs Synergy 8000 (mobil) in a Non HP carby'd car, so I coulda been unlucky.

I have heard a lot of motorcyclists say that Optimax is not "bike" friendly. Rumors! Need the facts I guess.

Cameron

G'day,

Haven't touched Optimax for my Turbo since I spent $600 bucks getting the injectors on my bike cleaned after putting the three first fuel fills of optimax into it.

The detergents that are (were) in the Optimax fuel disagreed completely with the bike. Therefore there is no way I will ever again use Optimax in a Fuel Injected vehicle. *Overreaction in Progess*

On the flip side however, Optimax makes a difference vs Synergy 8000 (mobil) in a Non HP carby'd car, so I coulda been unlucky.

I have heard a lot of motorcyclists say that Optimax is not "bike" friendly. Rumors! Need the facts I guess.

Cameron

There are tons of rumours about the terrible things Optimax supposedly does, but very very little fact.

Try finding a mechanic or person with FIRST PERSON experience with a problem caused by optimax and you will find it extremely rare.

Ive tried, and all, when questioned closely finally admit it was a firend of a friend or similar.

Most people who complain of things fouling up are people who drive/ride in the low rev range. This is a pattern I have found amongst every person (not that many of them) who has said their engine fouled with Optimax.

Any engine will eventually foul if only kep in low revs (should be run through the entire rev range relatively frequently). Optimax, it seems, in some vehicles may make this happen more readily.

Also, when used in a vehicle that is not new, there is a small chance that the detergents whilst cleaning your engine may loosen deposits that are gunked up somewhere inside your engine. This if you are unlucky can do things like block a fuel injector. (Question: was your bike brand new and did it use Optimax from day one? Or did it use lower quality fuel and then Optimax?).

When a vehicle that is gunked up has a problem when Optimax loosens some gunk stuck somewhere, I wouldnt blame Optimax - Id blame the crap fuel that put the deposit there in the first place. Any one of several fuels or aftermarket fuel system cleaners could have loosened that same crap and caused the same problem.

I have to say Ive used it in a variety or leaded and unleaded cars and bikes, both standard and performance vehicles, and have never had an issue. Its not always the best fuel for every engine (example: my bike runs a little smoother on Mobil8000 than Optimax....but most of my cars have been the opposite).