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Unread 04-04-2012, 01:18 AM   #1
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Default changing transmission fluid to increase mpg

2004 Ford Focus ZX5 manuel hatchback 2.0L DOHC

So I was thinking of using a very thin trans fluid. Since I need to change my CV shaft draining the fluid will be simple enough. Do any of you know how to add the new fluid in? Also does anyone know what kind of fluid I should buy, and what the thinnest a focus can use? I live in canada so I can use thin fluid anyways, it never gets really hot, and is usually freezing or colder 40% of the year.
Oh yeah and also how much will I need roughly? Ideally I would want as close to the right amount as possible.

Last edited by Sayshell; 04-04-2012 at 01:24 AM.

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Unread 04-04-2012, 01:29 AM   #2
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Only use the Fluid Ford specifies for the vehicle anything else can damage the trans.
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Unread 04-04-2012, 01:55 AM   #3
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is it the kind of thing where its "this is the only fluid that works" or is it "this is the only fluid you can use and it comes in light, medium, and heavy"????

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Unread 04-04-2012, 02:08 AM   #4
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Get a synthetic version of the fluid Ford specifies.
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Unread 04-04-2012, 02:11 AM   #5
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Trans Fluids are not like oil they don't come in different viscosities, Honestly you shouldn't change viscosities of oils wither from what is listed for your vehicle.
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