LB7: Fuel in oil questions?

kking

~only stock for now~
Mar 20, 2013
81
0
0
Il
I've posted a lot about my problems with fuel in my oil, things done so far new injectors from merchant auto, new cp3, new injector lines. I've changed my oil a lot here lately and I'm just paranoid now my oil pressure will start out around 35 on a hot day but after a few thousand miles on the oil it will drop to 20 at idle. I've used my mighty vac on the return lines they held 15hg vacuum and I have done a return test and both banks returned 35ml. I'm out of ideas for the old girl thinking about trading for something a little newer.
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,677
1,944
113
Mid Michigan
My truck idles around 20psi too. I dont think its anything to worry about.
When warm, does your oil pressure go up with rpm and max out around 60psi?
 

kking

~only stock for now~
Mar 20, 2013
81
0
0
Il
At this point im more paranoid than anything about something going wrong, highway speeds right around 60psi and wot just above that. Hot idle more around 20-25 psi. It's always hard to tell where my oil level is at on these style of dipsticks.