I really doubt it's the filter if it's taking 30 seconds to get oil pressure. Sounds more like milky oil maybe, clogged pickup screen
or something else stupid. My powerstroke fills 2 3 quart filters in about 5 seconds. I rarely fill them when I change them. My tractors all have upside down filters without anti drainback valves, one is a perkins
, and none of them ever take more than 2 or 3 seconds even in the winter with an empty filter to get pressure. Something is wrong here. He really needs to get a look at the oil before doing anything. Water
in it is about the most likely. I hope it's not that though. The pressures are too good to be a bad pump really. Although, as the oil warms up it will get better pressure sucking through a clogged pickup screen
. I see that a lot on cummins diesels and pretty much anything made by chrysler and mitsubishi. They tell people 7500 mile oil change
intervals these days and people go to jiffy lube every 15000. Clogged pick up screens are very common.
Almost every perkins I've ever seen with this problem was caused by water
. I used to overhaul
them quite a bit at a tractor dealer. It's a common engine in forklifts and skid steers.