after a recent oil change i have noticed high oil pressure and a slight low RPM knock. did i do something wrong? i have changed the oil on dozens of vehicles and never had issues like this. checked the oil today and it was just a smidge low so i filled it up to just over the fill line oil pressure went up to 72-75PSI at start up then drops down to around 40PSI after it warms up. before i sat just under 70PSI start up and closer to 50PSI after warm up.

edit: i have put around 1000miles (2 weeks) on it and the knock just showed up in the last 2 days. has not been rev'd or stressed. just DD and been taking it easy on her to try and get some better gas mileage out of it. also when i shut it off it sounds like a drain. same noise when i added a little oil...

 

What weight oil did you use?

I've heard the 4.0 motor doesn't like certain kinds after a long life.

 

what it calls for just tossed in 10w-30 and its only got 119K on it.

 

I'm screamin!!!! What kind of filter did you use? Sounds like a blockage (feels like dejavu.... someone else just had this problem.)

 

I did, but had the opposite. Low oil pressure. And believe it or not, I was using a Puralator PureOne filter which somehow failed and caused the low pressure. The opposite could happen as well as stated. Blockage would hold back flow, cause oil depreivation while holding a high pressure.

 

Had a coupon for a free fram so yea ocod in it right now. After work going to get a good filter some synthetic 10w-30 and see if it goes away

Sent by my pet chicken

 

Fram.....

The sound your engine is making is called 'retching'. It's so disgusted with you for installing a Fram filter, it's going to vomit.

 

^^^^^ likes it! Someone should call em up and let em know thy forgot to put the filter in hat orange can!

 

No need for new oil. When I had my problem, I just put a drain pan under the filter, took it off, and installed a Mopar one. Problem went away. The oil is most likely fine.

 

^^^ like the gentleman above states :-)

 

Eh, go with synthetic anyway. And your engine should sound like a drain after the oil gets hot and you turn it off, btw.

 

Wix, Mobil 1, K&N, Purolator, and Bosch are all good filters, btw...

 

Hmm I wonder if that's my problem. I noticed mine making a odd tap tap tap at low idle. It started when the famous header crack came to visit me.



Not hijacking thread

 

It's fixing to tap tap tap your bank account.

 

Lol @ firestorm