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post #1 of 11 (permalink) Old 09-11-02, 05:26 PM Thread Starter
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Question Optimax Fuel

Friend of mine won't use Optimax in a pink fit - said that there was some sort of problem with it - too high a detergent level or something? Eventually causes all sorts of problems for the engine. Apparently this problem made it into the news. Anyone else heard of this?

Personally I still reckon it's the best fuel I've used .....

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post #2 of 11 (permalink) Old 09-11-02, 05:49 PM
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Where did your friend here this?

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post #3 of 11 (permalink) Old 09-11-02, 05:56 PM
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I've gone off Optimax. I used to use it all the time, but have since switched back to using Mobil Synergy 8000. My car seems to appreciate it more.

The only problem I have is that with the servo I go to near my house the 8000 pumps have been out of order the last few times I've been there. Unfortunately I was so low yesterday I was forced to use lawn mower fuel *shivers*
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post #4 of 11 (permalink) Old 09-11-02, 10:51 PM
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Never really tried anything else but BP Ultimate 98 works for me


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post #5 of 11 (permalink) Old 09-12-02, 03:06 AM
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I've tried Shell Optimax and when it first came out it was very good but after comparing it with Mobil Synergy 8000 i find the 8000 much better as for normal unleaded i don't touch that stuff.

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post #6 of 11 (permalink) Old 09-12-02, 09:17 PM
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a friend has his cat convertor checked out when the zorst was replaced and they said they found traces of methanol in it...

now as far as i know methanol is corosive, wich aint good for the fuel systems.. and i 'believe' (99% chance of not being right) that there are fair levels of tolulene in it too..

bugger this stuff, good old LPG for the twin turbo setup :D
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post #7 of 11 (permalink) Old 09-12-02, 09:41 PM
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LPG has its problems, too. If you buy cr@p from a dodgy servo it clogs up your converter with wax. You then have to get it cleaned which costs like a hundred bucks. It won't happen over night but it will happen.

My next car will run on premium, I'm wondering which to use. In two days I've read two conflicting posts on Optimax and Synergy 8000. Which is better, or do I use BP Ultimate?

If it ain't broke don't fix it.
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post #8 of 11 (permalink) Old 09-13-02, 01:15 AM
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I knew a guy with a Lancer GSR(with an Evo drivetrain) that blew the engine running on Optimax, I think he got some compensation from Shell, but it wasnt enough to cover all his losses....
Apparently alot of people at the time in Canberra had troubles with Optimax...

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post #9 of 11 (permalink) Old 09-13-02, 04:34 AM
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Around Christmas the Optimax sold here in Canberra seemed to make quite a few cars run like dogs. Since then it just hasn't seemed as good. Don't know why but it is more than just my imagination.

I got back from a recent work trip and drove my car (MY02 WRX) and it seemed to be very sluggish. My brother was looking after the car and I told him to use only Mobil PULP or BP Ultimate. Turns out he put in some Optimax and I picked it immediately.

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post #10 of 11 (permalink) Old 09-13-02, 04:49 AM
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optimax makes the xa ping like crazy ... synergy 8000 still pings but not as much
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