(extra) Knocking when oil pressure rises

[Chaseman]

Well or at least I think. I was on the freeway and when I got off I had this loud knocking ( louder then the usual always there knock ) I was thinking ah crap time to drag out the spare. I got back to school with it knocking the whole way there till I shut it off. 2 hours later I started it during lunch and the loud knocking was gone and I had to use the truck so I drove out to lunch but then it came back after I'd been trying to beat someone somewhere ( yes I'm a dumb teen ) and the knocking came back. Once it came back I took it easy on the way back from school and it slowly went away.

So what I can deduce it is only knocking once my oil pressure gets up with the rpm's. My oil pressure is always toward the right on the stock gauge. I had this trivial idea that maybe it's my fram ( somehow I had it and I thought I might as well use it ) oil filter not letting through and straving something of oil and the oil pressure still reads high because their is oil pressure before the sensor. I switching to wix anyway.

[iamthewreckingcrew]

I wouldn't use a fram oil filter on my neighbor's mower.

[NM5K]

Fram orange filters have lousy anti drain back valves. I can't run them on my truck.
I tried one once, and it didn't last a day before I yanked it.
I use Motorcraft FL1A's on my trucks.
Hard to say about the bearing knock, but generally it's not good to hear that.
You say it's worse when the engine is warm and the pressure is up.
Could be... One thing to consider... That is when the oil is the thinnest.
I think I'd change the oil and filter and see what happens.
I don't know what weight oil you are using, but you might want to consider
bumping up a notch as far as weight. How old is the oil that is in there now?

[Chaseman]

Thanks for the reply's
I was using 10-30 Penz , Today i changed to 15-40 Rotella T with a Wix filter. So far so good , I;ll have to take it on the freeway to see if the horrible death knock of doom comes back. If it doesn't come back we have yet another story against fram filters. If it does I guess I have an excuse to put in my spare 390. ( unfortunately schools about done so I wouldn't be able to use the school's shop )

[70shortwide]

fyi, ive never heard good about penzoil either...

[averagef250]

Boy, Penzoil and fram? I don't think those two wrongs make a right. Your engine should be dead by now with those, toss teen driver on top of that and there's yet another testament to FE toughness!

[70shortwide]

not to rib on ya but i was a teen not long ago. still havent really grown out of the way i drive....

[Chaseman]

Boy, Penzoil and fram? I don't think those two wrongs make a right. Your engine should be dead by now with those, toss teen driver on top of that and there's yet another testament to FE toughness!

oh.. also did I mention I found out during this Penz and fram period the truck is also a tad slower then a frineds chevy in *cough* top end.
Wow I'm so cracked up after reading this , it made my day considering someone hit me in my truck today.

[NM5K]

I'd never really heard too much bad about Pennzoil, but the Fram filter problem
I've seen first hand.
When I tried the Fram filter, it was one that I got free from the guy that
owned the truck before me. I finally got around to using it, and I was aware
of the drain problem, but decided to try it anyway. At first I thought it was going
to be ok. IE: the oil pressure pumped on up after the initial start up and seemed ok.
But then I came back later to go to the store. Cranked it up, and no oil pressure.
I let it keep running at a slow idle to see if it would pump up.. Nope.. ???
Then I shut it off and restarted it after a minute or so. Same thing, no oil pressure.
But I kept it idling for a short time, and it finally started pumping some oil.
For a minute, I thought my oil pump had flaked out.
And this is a fairly fresh engine with about 5k or so miles. Brand new Melling oil
pump. This wasn't some wore out beater engine. "like the original engine it replaced
which spun a bearing a few months after I got the truck.. "
I went straight to the auto parts and got a FL1A.. Since then, I've never had that
problem again. Ever.. It was most definitely the orange Fram filters poor excuse
for an anti-drainback valve.
Orange fram filters are the kiss of death to any Ford six banger that has the
horizontal filter.. I hear they are bad for 229 slant sixes also..
I'll never use one again on any engine.
As far as Penzoil, I really don't use it much, but I'd never really considered it bad
oil. I remember I used it a couple of times back when I had a Z-28, and never noticed
anything unusual.
Oils of all brands have changed a lot in the last 20 years or so. The oils of the 80's
were real bad about leaving sludge gunk.. Maybe this was one of the Penzoil
problems.. But other brands had that problem too back then.
I've always kind of liked Castrol oils.. But I may be drinking the "anti-thermal breakdown"
commercial kool-aid.. I dunno..
But I figured if it was good under stress in little high rpm engines, it should be good
on the bigger slower revving engines.
I use the Castrol Syntec blend in my Toyota, and have never used anything else so far.
But my trucks, it sometimes changes due to me buying what is on sale..
I changed the oil in my 68 not long ago, but I've already forgot what I put in it.
I think it might have been Castrol dino oil.. It was on sale whatever it was..
I think it's been about 7?? years since I installed that long block, and it's still running
good. Sounds the same as it ever did, no smoke, no runs, no errors..
I think I did that engine before I joined this forum if I remember right...
And that's been a while, as you can see I'm one of the original joiners.. #15 or
something like that.. I knew Keith from the other place.. Ditto for Willowbilly, etc..

[70shortwide]

ive seen fram and penzoil at "work".
the fram filter was on my buddies s10, has a 350. there was a clearance issue where he either had to have a remote filter or use a smaller filter. (camero, maybe?) well the only part number he had was for a fram filter and none of the "helpful" guys at the parts counter would cross it over. they said that the fram would be fine. WRONG. he got about 1000 miles on it (past the first 500 mile oil change) and had no oil pressure, now hes a chevy guy and hes a little hard on his motors, but VERY strict about maintenence. especially oil. i swear he watches his oil pressure more than the road. so he changed his oil and filter. good for another 1000 miles or so, changed only the filter and all was good again. he did this 3 times i think. finally raised neough hell at the parts store to get a different filter. last i saw he had 60-80 lbs, at 2900 miles and he was on his way home to change it. Ill never use another fram again.

penzoil.
my neighbor bought a motor for his truck. heard it run and was satisfied, got it home and we pulled a valve cover trying to id the motor, it was NASTY. gunk mixed with dried up gunk. 1/2 inch thick in the good spots. never seen anything like it. it was a low mile motor. (he bought it from a friend and was there when it was built). ive seen motors with 275+ miles that showed nothing like this. the guy was stuck on penzoil, wouldnt use anything else. showed him the motor and he wont use it anymore. i think it was thew biggest shock for him because he knows exactly the maintenence he did to it and how many miles it had.

[Chaseman]

When I tried the Fram filter, it was one that I got free from the guy that
owned the truck before me. I finally got around to using i

That's the same thing with me. Course the penz was me cause it was on sale and I was unaware of its history.
And thanks to all your great replys