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xl912 Occasional Poster Registered: May 2004	Re: Optimax warms engine faster than Ultimate? Fri, 15 October 2004 12:52 Toluene is indeed the active ingredient in Optimax. It's a quick, dirty and cheap solution to enhance the octane in petrol, As a by-product of the refining process that was mainly burnt off until they found it was a way to turn waste into hi-octane fuel. Good points of Toluene in petrol, ups the RON number, burns hot and therefore clean. Bad points are that it boils off at atmospheric pressure at a fairly low temperature (110ºC). This makes it best suited to fuel injected cars with sealed fuel systems. Not so good in carburettors where the float chambers and tank are vented to the atmosphere. After a few days the Toluene boils off from the float bowl and tank vents, reducing the remaining petrol back to something like normal unleaded. Even in fuel injected cars it tends to degrade after a few weeks. And being 20% coal-tar just guess what residue it leaves in carburettors and fuel injectors. I prefer Mobil 8000 for both the carburettored and injected cars, but the BP Ultimate seems to be quite good too. [Report message to a moderator]

	Subject	Poster	Date
	Optimax warms engine faster than Ultimate?	Nark	Thu, 19 August 2004 04:11
	Re: Optimax warms engine faster than Ultimate?	rob_RA40	Thu, 19 August 2004 04:14
	Re: Optimax warms engine faster than Ultimate?	Nark	Thu, 19 August 2004 04:25
	Re: Optimax warms engine faster than Ultimate?	fade-e	Thu, 19 August 2004 04:15
	Re: Optimax warms engine faster than Ultimate?	Toobs	Thu, 19 August 2004 05:52
	Re: Optimax warms engine faster than Ultimate?	soaringmik	Thu, 19 August 2004 06:04
	Re: Optimax warms engine faster than Ultimate?	ae86drift	Thu, 19 August 2004 06:20
	Re: Optimax warms engine faster than Ultimate?	wastegate	Thu, 19 August 2004 07:35
	Re: Optimax warms engine faster than Ultimate?	drk_awd	Fri, 22 October 2004 09:47
	Re: Optimax warms engine faster than Ultimate?	soaringmik	Thu, 19 August 2004 06:30
	Re: Optimax warms engine faster than Ultimate?	oldcorollas	Thu, 19 August 2004 06:45
	Re: Optimax warms engine faster than Ultimate?	Cool1	Thu, 19 August 2004 07:42
	Re: Optimax warms engine faster than Ultimate?	ae86drift	Thu, 19 August 2004 08:56
	Re: Optimax warms engine faster than Ultimate?	BlackSupra	Thu, 19 August 2004 09:37
	Re: Optimax warms engine faster than Ultimate?	Jimmeh	Thu, 19 August 2004 10:30
	Re: Optimax warms engine faster than Ultimate?	Cool1	Thu, 19 August 2004 10:49
	Re: Optimax warms engine faster than Ultimate?	Alchemist	Thu, 19 August 2004 14:20
	Re: Optimax warms engine faster than Ultimate?	exquisit	Thu, 19 August 2004 12:43
	Re: Optimax warms engine faster than Ultimate?	COROLA	Thu, 19 August 2004 15:43
	Re: Optimax warms engine faster than Ultimate?	Nark	Thu, 19 August 2004 23:46
	Re: Optimax warms engine faster than Ultimate?	Nark	Fri, 20 August 2004 00:37
	Re: Optimax warms engine faster than Ultimate?	FKN16V	Fri, 20 August 2004 12:36
	Re: Optimax warms engine faster than Ultimate?	allencr	Fri, 20 August 2004 14:23
	Re: Optimax warms engine faster than Ultimate?	Buddha	Sat, 21 August 2004 09:23
	Re: Optimax warms engine faster than Ultimate?	Classique71	Sat, 21 August 2004 09:32
	Re: Optimax warms engine faster than Ultimate?	CamryMan	Fri, 15 October 2004 02:10
	Re: Optimax warms engine faster than Ultimate?	paddles	Sat, 21 August 2004 12:50
	Re: Optimax warms engine faster than Ultimate?	FLY PSI	Sat, 21 August 2004 13:35
	Re: Optimax warms engine faster than Ultimate?	xl912	Fri, 15 October 2004 12:52
	Re: Optimax warms engine faster than Ultimate?	FKN16V	Sat, 21 August 2004 23:59
	Re: Optimax warms engine faster than Ultimate?	rvrolla	Sun, 22 August 2004 01:36
	Re: Optimax warms engine faster than Ultimate?	Sam4A-GE_Seca	Sun, 22 August 2004 02:27
	Re: Optimax warms engine faster than Ultimate?	jeffro RA28	Sun, 22 August 2004 08:08
	Re: Optimax warms engine faster than Ultimate?	Browndog	Fri, 15 October 2004 07:21
	Re: Optimax warms engine faster than Ultimate?	jesseT18	Fri, 15 October 2004 08:14
	Re: Optimax warms engine faster than Ultimate?	kayot1k	Fri, 15 October 2004 08:26
	Re: Optimax warms engine faster than Ultimate?	Browndog	Fri, 15 October 2004 09:03
	Re: Optimax warms engine faster than Ultimate?	FKN16V	Fri, 15 October 2004 10:00
	Re: Optimax warms engine faster than Ultimate?	olihaub	Fri, 15 October 2004 10:29
	Re: Optimax warms engine faster than Ultimate?	justcallmefrank	Fri, 15 October 2004 11:11
	Re: Optimax warms engine faster than Ultimate?	olihaub	Fri, 15 October 2004 11:57
	Re: Optimax warms engine faster than Ultimate?	indigoid	Fri, 15 October 2004 11:31
	Re: Optimax warms engine faster than Ultimate?	Tats	Fri, 15 October 2004 11:33
	Re: Optimax warms engine faster than Ultimate?	mk1sc	Fri, 15 October 2004 11:41
	Re: Optimax warms engine faster than Ultimate?	notorius	Fri, 15 October 2004 16:45
	Re: Optimax warms engine faster than Ultimate?	Adam_Rolla	Fri, 15 October 2004 18:29
	Re: Optimax warms engine faster than Ultimate?	rx-3 ip	Fri, 15 October 2004 21:54
	Re: Optimax warms engine faster than Ultimate?	notorius	Fri, 15 October 2004 22:19
	Re: Optimax warms engine faster than Ultimate?	improvedae86	Fri, 15 October 2004 22:41
	Re: Optimax warms engine faster than Ultimate?	notorius	Fri, 15 October 2004 23:24
	Re: Optimax warms engine faster than Ultimate?	gr8r-x	Sun, 17 October 2004 00:59

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