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Old Jan 1, 2010 | 10:59 AM
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Default dexron VI

Just curious if anyone is using this. I was told that it makes a noticeable difference. The stuff is a little pricey. Is it a worth wile upgrade?
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Old Jan 1, 2010 | 11:30 AM
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It is what is going to replace DEXIII. It is ok to use it not to worry. Vince
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Old Jan 1, 2010 | 04:33 PM
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I worked at Jiffy Lube and I still get free stuff from my old bosses. When I get my tranny flushed, they said they use DEX 3 and put in this 16oz. bottle of some additive that brings it up to DEX 6 specs.....I don't care though because it's free and it gets changed like every 5K miles.
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Old Jan 1, 2010 | 05:47 PM
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Originally Posted by DSkyles
I worked at Jiffy Lube and I still get free stuff from my old bosses. When I get my tranny flushed, they said they use DEX 3 and put in this 16oz. bottle of some additive that brings it up to DEX 6 specs.....I don't care though because it's free and it gets changed like every 5K miles.
additives.
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Old Jan 1, 2010 | 06:13 PM
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Why would you change the trans fluid every 5000 miles? What a waste.
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Old Jan 2, 2010 | 04:02 AM
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Originally Posted by 69LT1Bird
Why would you change the trans fluid every 5000 miles? What a waste.
1. I bracket race the car

2. It's free
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Old Jan 2, 2010 | 05:31 AM
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IIRC VI is synthetic. I would just use DexIII, they have used it for a long time and works fine.
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Old Jan 2, 2010 | 07:44 AM
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Default Dexron 6

On our Dyno testing as well as Production vehicles the transmission calibration (shift timing etc) was changed for the Dex 6 Change , Can,t remember why they updated to that .
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Old Jan 4, 2010 | 07:05 PM
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Many of the new transmissions have direct friction/friction clutch operation which required an improvement in fluid technology.
I wonder if the Dex6 would affect stall or shifting characteristics in a Th400 application?
Some of the turbo guys the tractor hydraulic fluid to battle high temps, but this could be an option as well.
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