Hey guys,
Long time lurker, first time poster. I did search the forums and can't quite find the answer I'm looking for. I just bought a 2012 Jeep Grand Cherokee with the Pentastar 3.6L V6. The owners manual calls for 5W-20 Full Synthetic, but there is a supplement with the manual that calls for 0W-40 Full Synthetic. What oil is recommended for this engine? Does anyone know why Jeep changed this, was it to meet CAFE standards or something else? I don't know all the ins and outs of this engine, but I just don't feel comfortable putting a 0W-40 oil in this engine, whether it be overhead roller-follower valve train or not. I understand that too thick an oil is unnecessary in these new engines due to tighter tolerances and different design, and that too thick an oil could impede proper VVT operation. I also plan to stick with an OEM Mopar filter. Does anyone have any advice or experience first hand with this engine? What oil should I use for proper protection? Looking forward to the discussion.
Long time lurker, first time poster. I did search the forums and can't quite find the answer I'm looking for. I just bought a 2012 Jeep Grand Cherokee with the Pentastar 3.6L V6. The owners manual calls for 5W-20 Full Synthetic, but there is a supplement with the manual that calls for 0W-40 Full Synthetic. What oil is recommended for this engine? Does anyone know why Jeep changed this, was it to meet CAFE standards or something else? I don't know all the ins and outs of this engine, but I just don't feel comfortable putting a 0W-40 oil in this engine, whether it be overhead roller-follower valve train or not. I understand that too thick an oil is unnecessary in these new engines due to tighter tolerances and different design, and that too thick an oil could impede proper VVT operation. I also plan to stick with an OEM Mopar filter. Does anyone have any advice or experience first hand with this engine? What oil should I use for proper protection? Looking forward to the discussion.