On my 07 Classic first oil change I asked the dealer what flavor of oil they used for our Dmax’s and they couldn’t tell me offhand. That convinced me to buy my own oil to take in for oil changes so I new what’s going in.
Rotella T4 15W40 Was my choice and has worked well. Buy it at TSC 2 1/2 gal. when on sale for $30
I also bring in my own ACDelco filter and save another $10
Last edited by Rvn4me; 11-07-2019 at 08:56 AM.