What is the best dex 3
02-18-2015, 09:50 AM
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What is the best dex 3 Looking for some advice from people who no what there talking about when it comes to trans fluid for 4l60 I don't like what I have in it now going back to Dex 3 I was looking at chevron....
02-18-2015, 01:42 PM
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Signature Series ATF. If you want to try it out, shoot me a PM. I can ship it to you for around the same price (or usually a little less) than you can pay for it retail. I use it in my SSS, which tows some and gets beat on pretty regularly, and it runs like a top. Also, I'm currently running the Torque Drive, that this fluid replaced, in my Trans Am, and my trans stayed plenty cool and shifted great. It was a cammed car with a 3200 stall and I wasn't exactly easy it either. lol 
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02-19-2015, 09:19 AM
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It doesn't say "Dexron" on the label; it seems to be formulated for commercial trucks.
Lots of people here (and I) use synthetic Dexron VI, which is now recommended by GM, but I have not seen a single claim that it works better than Dexron 3. Its probably better for 100K mile fluid changes, but I suspect everyone here changes more often than that. Look on Amazon for "Dexron 6 Gallon". Its $24 for AC Delco brand.
Since dropping/draining the pan only gets about 4-5 quarts out and the trans/converter holds 12+, you may need to get a full flush done at a shop. This is a $2000 tool that intercepts the fluid to the cooler - it catches what comes out of the trans with the engine running and simultaneously feeds new fluid into the trans. Whether they use Dexron 3 or 6 really doesn't matter. You can also mix Dexron 3 and 6.
Lots of people here (and I) use synthetic Dexron VI, which is now recommended by GM, but I have not seen a single claim that it works better than Dexron 3. Its probably better for 100K mile fluid changes, but I suspect everyone here changes more often than that. Look on Amazon for "Dexron 6 Gallon". Its $24 for AC Delco brand.
Since dropping/draining the pan only gets about 4-5 quarts out and the trans/converter holds 12+, you may need to get a full flush done at a shop. This is a $2000 tool that intercepts the fluid to the cooler - it catches what comes out of the trans with the engine running and simultaneously feeds new fluid into the trans. Whether they use Dexron 3 or 6 really doesn't matter. You can also mix Dexron 3 and 6.
02-20-2015, 09:56 AM
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Dex VI.
http://www.ls1gto.com/forums/showthread.php?t=359231
And as far as brand, I've taken AutoZone "Coastal" to hell and back with a 4,300 stall in the AZ heat. 230F multiple times. Always bright red. Always smelled "proper". Dex VI is beast fluid.
Dex III is for M6s these days........
http://www.ls1gto.com/forums/showthread.php?t=359231
And as far as brand, I've taken AutoZone "Coastal" to hell and back with a 4,300 stall in the AZ heat. 230F multiple times. Always bright red. Always smelled "proper". Dex VI is beast fluid.
Dex III is for M6s these days........
