ArfDogZYX
Junior Member
Hello - trying to get a sense of what I might be in for here. all numbers are engine warm.
200k miles 2014 5.7 hemi; using synth 5/20. in recent months at 1500 rpm oil psi has been around 53 (in months prior, was closer to 57). idle would be around 43.
friday noticed it was at 47psi at 1500 rpm, consistent the rest of the day (kept it on dash). Saturday started and ended at 45 at 1500 rpm - had dropped 2 but did not drop during the day more. sunday, 20 degrees warmer outside, at 44 psi, and idle is now down to 38-39psi. have not cranked today yet but will get to that in a bit. shop won't see it until wednesday. truck gets about 200 miles a day, city/highway mixed.
last oil change 4500 miles ago - same garage has done all mechanical and oil changes on it last 60k miles.
what might I be looking at? the gradual psi reduction, almost like clockwork overnight, may suggest possible culprits (I hope).
200k miles 2014 5.7 hemi; using synth 5/20. in recent months at 1500 rpm oil psi has been around 53 (in months prior, was closer to 57). idle would be around 43.
friday noticed it was at 47psi at 1500 rpm, consistent the rest of the day (kept it on dash). Saturday started and ended at 45 at 1500 rpm - had dropped 2 but did not drop during the day more. sunday, 20 degrees warmer outside, at 44 psi, and idle is now down to 38-39psi. have not cranked today yet but will get to that in a bit. shop won't see it until wednesday. truck gets about 200 miles a day, city/highway mixed.
last oil change 4500 miles ago - same garage has done all mechanical and oil changes on it last 60k miles.
what might I be looking at? the gradual psi reduction, almost like clockwork overnight, may suggest possible culprits (I hope).