Re: Oil and filter for 3.6L
There are kits to change from the canister type filter, to a twist off, standard type of filter. The dealer that does a good job uses 5-30 semi-synthetic and that keep the service contract in check. They use Mopar which is Jeep filters. Haven't had any engine issues, but time for the 4wD service at 45K-48K and doing some research as gear oils have changed to make it more confusing. Its good you are doing your research. Most dealers have very reasonable oil changing fees, these days. Almost all dealers around here have a quick lane an its $19.99 with shop fee and tax comes out to under $25. every 4K, that makes sense to have them do it. However 4300 to change the gear oil in the differentials and drain and fill the transfer case when the FIL get parts cost plus 10% and is a certified mechanic. I'll go with the self do it job on that.