Totally unscientific observation

Messages
233
Location
Odessa, TX
Have a 2003 Dodge PU w/ 4.7 that does not see much use lately. In a moment of weakness I had the oil changed at Walmart on 9-26-05 with mileage of 54921. PZ 5/30 with the orange can of death filter. Noticed while driving this week that each startup the oil pressure gauge would creep from the bottom to the normal range. My mind immediately thought of the orange FRAM under the hood. Got totally paranoid. Had the oil changed at a different location today, 2-7-06 with mileage of 55856. PZ 5/30 with the yellow PZ filter. Now the oil pressure gauge jumps up almost instantly to the normal range. Again no science involved, just an observation. I hope that I didn't hurt my engine with the orange can.
 

WTJackalope

Thread starter
Messages
233
Location
Odessa, TX
AW SH***********T. I sure do miss my previous home where I had a garage to do things myself. Stuck in this apt. with no place to do my own work really sucks the big one.
 
Messages
2,688
Location
Elderly County, Florida
Boy, I hear that! Where I used to live, I had a shop behind my house, (22 feet by 32 feet with ten foot ceiling). Now, I live in "town" and do everything out in the yard. I sure do miss that shop!
 
Messages
323
Location
iowa
the jiffy lube guys always look at me funny when i hand them the pureone filter. they still put it on though.
 
Messages
9,448
Location
USA
My Dakota with a 4.7 even at -20°F with M1 10W30 would have positive pressure as the vechile was cranking. I had full pressure within 13 seconds and this is with the already low idle of 500 RPM's wich sometimes went even lower dureing the winter.
 
Messages
36,436
Location
ME
There's a rumor that pennzoil filters have multiple makers. Find that in the filter section. Very possible you got a "good" adbv on the new pz filter, scattered quality control means a good one sneaks through once in a while. [Big Grin] You CAN do mechanical work living in an apartment with strict rules, just have to do it guerilla style in the middle of the night, or find a vacant lot somewhere. [Big Grin]
 
Messages
78
Location
Rochester, MN
The oil filter wouldn't affect oil pressure and the speed at which it builds, unless it was plugged, and then wouldn't the oil pressure build faster, since it has less distance to travel? An engine at 55k certainly wouldn't/shouldn't plug any filter, even a fram. Or esp a Fram?
 
Messages
4,844
Location
Saskatchewan
quote:
The oil filter wouldn't affect oil pressure and the speed at which it builds, unless it was plugged,
The likely scenario here is that a defective or poorly designed anti-drainback valve was allowing oil to leak out of the filter while the truck was sitting, so the oil pump had to fill the filter at startup before oil pressure would come up.
 
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