Can't figure this out....oil pressure questions:

[Maltman]

I'm switching to synthetic this year and I'm a little concerned with my oil pressures.

I have the high volume kit and the bypass is blocked. Also, I have the PTE turbo saver kit (relocation for oil filter).

Anyway, I immediately noticed my oil pressure was pegged..well, it was around a constant 60-80 psi when first started. So, I dropped the spring down to lower the pressure and now I get a constant 30 psi....mid throttle or wot...stayed around there....really hot days would drop the idle down about 20 psi (10ish).

So, is the bypass doing this or is this a result of running the wrong filter on the PTE kit (AC P35L). I'm thinking that the synthetic is only going to make the issue more noticeable, so I thought I'd ask.

No, I can't replace the bypass without replacing the entire front cast...so that isn't an option. More importantly, what pressure should I be happy with?

...oh, I was running 10-40 valvoline (non-synthetic).

Thanks,

 

[fast eddie]

put the yellow spring in the pump.
Ed

 

[Red Regal T]

Why don't you put the spring back in that had you at 80 psi on cold start up. 18 to 22 psi at hot idle is good. 40-45 at 2000 rpm at hot cruise is good. 65 to 70 at wot is good.