Royal Purple oil?
Thread Starter
Racer
Joined: Jul 2006
Posts: 354
Likes: 0
From: Fontana, Ca
Royal Purple oil?
I was told that Royal Purple MaxATF is fine to put in a A6 trans. The dealer said only use Dex6 type oil. Has anyone use this stuff and hoe did you like it. Also did you change the trans filter at the same time? 
Le Mans Master
Joined: Mar 2006
Posts: 7,838
Likes: 1
From: Valencia '32 Ford 3 window with 615 HP!!!!
St. Jude Donor '06-'09
I've used Royal Purple engine oil in My blown Vette for a couple of years now and love the way it works!
I'm sure the trans fluid is just as good!
I'm sure the trans fluid is just as good!
Melting Slicks
Joined: Jul 2007
Posts: 3,097
Likes: 5
From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA
The reason for this is because Dexron VI is actually a semi-synthetic fluid and using a full synthetic effective makes everything too slippery for the internal parts which need a certain amount of friction to operate correctly.
Your dealer was correct on this one.
Christopher
Le Mans Master
Joined: Jul 2005
Posts: 5,328
Likes: 405
According to Dave from Yank Performance, using anything other than Dexron VI in your A6 transmission is a bad idea.
The reason for this is because Dexron VI is actually a semi-synthetic fluid and using a full synthetic effective makes everything too slippery for the internal parts which need a certain amount of friction to operate correctly.
Your dealer was correct on this one.
Christopher
The reason for this is because Dexron VI is actually a semi-synthetic fluid and using a full synthetic effective makes everything too slippery for the internal parts which need a certain amount of friction to operate correctly.
Your dealer was correct on this one.
Christopher
http://www.imakenews.com/lng/e_artic....cfm?x=b11,0,w
http://www.zzperformance.com/grand_p...=607&catid=105
Castrol, Mobil, and Chevron have synthetic transmission fluid equivalent to Dexron VI.
http://www.castrol.com/castrol/secti...tentId=7028225
http://www.mobiloil.com/USA-English/...on_VI_ATF.aspx
http://www.chevron.com/products/ourf...n/dextron.aspx
From the Royal Purple website, MaxATF is not an approved replacement for Dexron VI:
http://www.royalpurple.com/transmission-fluid.html
GM specifies Dexron VI or equivalent as the only transmission fluid for the A6.
This is a list of approved Dexron VI fluids:
http://74.6.239.67/search/cache?ei=U...icp=1&.intl=us
Last edited by glass slipper; May 28, 2009 at 07:26 PM.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
From what I understand the Dexron IV was formulated for for the A-6 transmission that came out in 2006. But it can also be used for the 2005 Corvette which is Dexron III A-4 auto trans which i'm guessing is not synthetic. So If I brought in my car in today they would put this Dexron IV in instead as it supercedes the previous auto trans fluid Dexron III on a 2005 Corvette.
I would just check with Redline/Royal Purple/Amsoil to see what they have that satisfies the GM spec. The fluid will cost less than dealership Dexron IV and be better.
I would just check with Redline/Royal Purple/Amsoil to see what they have that satisfies the GM spec. The fluid will cost less than dealership Dexron IV and be better.
Last edited by LS WON; May 28, 2009 at 07:30 PM.
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Le Mans Master
Joined: Jul 2005
Posts: 5,328
Likes: 405
From what I understand the Dexron IV was formulated for for the A-6 transmission that came out in 2006. But it can also be used for the 2005 Corvette which is Dexron III A-4 auto trans which i'm guessing is not synthetic. So If I brought in my car in today they would put this Dexron IV in instead as it supercedes the previous auto trans fluid Dexron III on a 2005 Corvette.
I would just check with Redline/Royal Purple/Amsoil to see what they have that satisfies the GM spec. The fluid will cost less than dealership Dexron IV and be better.
I would just check with Redline/Royal Purple/Amsoil to see what they have that satisfies the GM spec. The fluid will cost less than dealership Dexron IV and be better.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
I think you mean Dexron VI, not IV. If you took your car in today, you would get Dexron III as it's still readily available, and you're correct that it isn't a synthetic. You can specify Dexron VI if you want and I would recommend that...I put it in my daughter's '99 'Vette when I changed the fluid/filter last year. Redline and Amsoil have transmission fluids that they say are good to use in Dexron VI applications but GM has not licensed the "Dexron VI" label to them because they haven't done the testing required. You're on your own there although Amsoil says they'll stand behind any oil related failure of the transmission and then sue GM to recover the cost. Sounds like a perfect opportunity to get stuck between a rock and a hard spot as a consumer and your wallet will likely be squeezed thinner.
So the regular Dexron III is still available.The transmission in my car is the old 4L60E which has been around so The Amsoil and Redline are already licensed for that auto trans
I hear that Amsoil is suppose to come out with a Dexron 6 ATF but I guess it is up to GM to license them to do so before they can.
When I do have the auto trans service I'll have the Amsoil put in or the Dexron 6. I'll just have to see what the latest news is as another person told me they didn't like the way their auto shifted with the new Dex 6 so they switched to the Amsoil and they noticed the shifts are better.
