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MS-75 Regular Location: Adelaide Registered: June 2002	Zinc content Tue, 02 September 2003 23:09 I was told something you guys may find interesting. When I was speaking to Mike at MV autos recently, I quizzed him about the Toyota/Dextron fluid differences. Apparently the main difference is the zinc content of the 2 fluids. Zinc increases the coefficient of friction between the steels and friction materials in the box (I'm sure of the exact chemical/mechanical mechanism yet). The Toyota fluid has a higher Zinc content than the Dextron, hence explaining the shuddering (slipping) that some users of Dextron fluid may experience (occurrence of slippage also depends on the condition of the clutchpacks). I suspect that there may also be some differences in the way the viscosities of the two fluids change with temperature-but I haven't been bothered to find out as yet. I was advised to use the Dextron in my new street/strip A340. However, considering it is full manual, shift points and shift quality have now become irrelevant. (Dextron is cheaper ) Sean [Report message to a moderator]

	Subject	Poster	Date
	possible 1jz auto problems?	Chris Davey	Mon, 01 September 2003 00:36
	Re: possible 1jz auto problems?	wastegate	Mon, 01 September 2003 03:47
	Re: possible 1jz auto problems?	Chris Davey	Mon, 01 September 2003 03:50
	Re: possible 1jz auto problems?	celicamad	Mon, 01 September 2003 06:12
	Re: possible 1jz auto problems?	speakafreaka	Tue, 02 September 2003 13:42
	Re: possible 1jz auto problems?	Chris Davey	Mon, 01 September 2003 06:14
	Re: possible 1jz auto problems?	celicamad	Mon, 01 September 2003 06:58
	Re: possible 1jz auto problems?	Norbie	Mon, 01 September 2003 06:16
	Re: possible 1jz auto problems?	Chris Davey	Mon, 01 September 2003 06:22
	Re: possible 1jz auto problems?	Celia-Sue	Mon, 01 September 2003 06:36
	Re: possible 1jz auto problems?	Soarer	Mon, 01 September 2003 07:38
	Re: possible 1jz auto problems?	HedgehogSandwich	Mon, 01 September 2003 11:21
	Zinc content	MS-75	Tue, 02 September 2003 23:09
	Re: possible 1jz auto problems?	Celia-Sue	Wed, 03 September 2003 07:51
	Re: possible 1jz auto problems?	ChuckLandwehr	Wed, 03 September 2003 10:26
	Re: possible 1jz auto problems?	Chris Davey	Wed, 03 September 2003 11:25
	Re: possible 1jz auto problems?	KDog	Thu, 04 September 2003 06:48
	Re: possible 1jz auto problems?	HedgehogSandwich	Thu, 04 September 2003 11:01
	Re: possible 1jz auto problems?	KDog	Thu, 04 September 2003 22:38
	Re: possible 1jz auto problems?	HedgehogSandwich	Thu, 04 September 2003 23:08
	Re: possible 1jz auto problems?	JZK25	Sun, 07 September 2003 05:39

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