Synthetic transmission fluid...recommendations?
06-16-2008, 08:30 PM
#1
Safety Car
Thread Starter
Synthetic transmission fluid...recommendations?
About to fill my new 2004R. Builder says either Dexron/Mercon or synthetic, both are OK. I'm leaning towards synthetic...
Any recommendations?
Thanks!
Any recommendations?
Thanks!
Last edited by MakoShark72; 06-16-2008 at 08:32 PM.
06-16-2008, 09:57 PM
#2
Instructor
Member Since: Apr 2008
Location: Batavia IL
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I asked my builder that same question when I picked up my 400. He told me for a street-driven car use Dextron. GM has used it in millions of transmissions with good luck. Spend the extra money somewhere else.
06-16-2008, 10:20 PM
#3
Safety Car
Thread Starter
06-16-2008, 10:54 PM
#4
Team Owner
The big thing is run the biggest cooler. Don't use the radiator side pan.
06-17-2008, 02:37 AM
#5
Le Mans Master
IMHO, the best synthetic juice for a GM auto tranny is from Allison-- $38.00/gallon. If you're stuck on synthetics.
A larger pan and a good cooler are the key to a long and happy life.
06-17-2008, 07:17 AM
#6
Le Mans Master
Member Since: Sep 2001
Location: Wellington, FL
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St. Jude Donor '11-'12-'13-'14-'15-'16-'17-‘18-'19-'20-'21-'22-'23-'24
Mobil 1 synthetic. It meets Dexron requirements and can handle much higher temperatures than conventional atf's. 
