[99LS1500]

Finally getting my rebuilt 4L60E installed and I'd like to know if I should use the Napa Dexron 3
or should I go with the fully synthetic trans fluid ?
My truck Is stock with no performance goodies.

 

[99LS1500]

No warranty on the transmission, it was a fresh rebuild included in the deal when I bought the truck back in July. I decided to use the NAPA Dex 3 Mercon and it's shifting great with no leaks or other issues. After 3 days of light driving I took the truck in for oil change and lube and had the shop check it over for leaks. They said all is good and found no issues so she's ready for the Winter. Thanks for the responses guys