Pennzoil Platinum 0W-20 SN Plus 50%, Pennzoil Ultra Platinum 5W-30 SN 50%
This is fairly well what I run in a 2017 3.6L Pentastar Grand Cherokee (even though it calls for 0W-20) and a 2018 5.0L Coyote F150 (calls for 5W-20). Just wanted to confirm my belief that I could not end up with a 10W or more by mixing. (It would have to be some weird chemistry to do that.) I thought I would end up with a very light 30 grade @100°C and sure enough I did. Didn't expect it to be closer to 5W however, but it looks like it is.
This is fairly well what I run in a 2017 3.6L Pentastar Grand Cherokee (even though it calls for 0W-20) and a 2018 5.0L Coyote F150 (calls for 5W-20). Just wanted to confirm my belief that I could not end up with a 10W or more by mixing. (It would have to be some weird chemistry to do that.) I thought I would end up with a very light 30 grade @100°C and sure enough I did. Didn't expect it to be closer to 5W however, but it looks like it is.