Titua1915

Hey guys, i am looking to change oil, with filter and pan gasket, i am debating whether i should pay the dealer to update the transmission and put the new blue oil or just replace it with the same yellow tan one originally in there. is there a major difference or would sticking to original tan oil ok?

FL C6.5 Avant

First, you should verify if your trans controller has been re-flashed. If it has, then you need to use LG8. If it hasn't, i would just stick with LG6.
What do your service records say?

Titua1915

I have the original zf lifeguard 6, but my question if is worth paying the extra to flash and then change fluid to blue or to just service transmission without updating and with original zf6 fluid?

raj99

Personally I don't think it would be worth it to you, since you'll have to remove all 9 qts of the current fluid then refill with the correct fluid. That will get expensive very quickly for you. Stick with the zf lg 6

Titua1915

Thanks bro appreciate your time