1991Jeep_Man

After further investigation, I have come to the conclusion that my low oil pressure isn't a failing oil pump but rather worn bearings. I get about 37 psi at 2000 rpm (hot) and 20-22 psi idle (hot). Oil pressure struggles to increase with higher RPM's. Now, I know every veteran mechanic here is gonna crash with this question, and I can't blame them.

I am not a believer in "band-aid fixes", but I am currently a college student with little to no work. I do not have the time nor money nor tools to replace the bearings. I was thinking of running 10w40 Mobil 1 high mileage oil rather than my usual 10w30 Mobil 1. I also considered using a qt of Lucas Oil Stabalizer, since the last time I used it I had a decent pressure increase. Please, remember I don't like these quick band-aids, but I have no other choice at the moment. Thanks for any input.

freegdr

http://www.jeepforum.com/forum/f11/l...e-idle-606032/

freegdr

if using the lucas got you oil pressure you were more ok with use it my pressures are 19 to 22 at idle and 35 to 45 when drivong i consider that great for a motor with 199.000 or so on it if your trying to get factory oil pressure it aint gonna happen with out a complete rebuild, check yesterday when driving our 2006 chevy 1 ton truck around 25,000 miles 20 psi at idle and around 40 when driving

1991Jeep_Man

I just don't understand. I went from great oil pressure (42 at 2000 rpm and rises with rpm, 25 at idle) to barely 18-20 this morning after a 30 minute trip and barely getting 35-36 psi at 2000 rpm. This change literally happened like overnight. I think I am gonna go ahead with 10w30 plus Lucas, but the guy at the parts store recommended using 10w40 and then adding some lucas should the oil pressure not change.