Oil pressure drops after 2000 miles +/- after oil change solved

[Teamiez]

If anyone uses PF46E oil filters and notices there oil pressures drop a bit after around 2,000 miles the problem is most likely the filter. I have been experiencing this & changing to a wix filter (I went with the XP) I haven’t noticed this problem again. Pretty sure there is also a TSB about this but figured I would share because it is a weird thing that happened with the last 3 Delco filters I used. So long GM filters! Can’t even make Those right anymore.

 

[Mudsport96]

I run the long ones, 61e i think

 

[OR VietVet]

My 05 gets the WIX 51522XP long filter and holds a steady 40 psi oil pressure at idle. I have been using WIX filters for at least 35 years with no problems.

 

[JonnyTahoe]

If anyone uses PF46E oil filters and notices there oil pressures drop a bit after around 2,000 miles the problem is most likely the filter. I have been experiencing this & changing to a wix filter (I went with the XP) I haven’t noticed this problem again. Pretty sure there is also a TSB about this but figured I would share because it is a weird thing that happened with the last 3 Delco filters I used. So long GM filters! Can’t even make Those right anymore.

Did you put over 2000 on the Wix yet ?

 

[Teamiez]

Did you put over 2000 on the Wix yet ?

yes approaching 3,000 miles

 

[Teamiez]

Did you put over 2000 on the Wix yet ?

i went with the 51042XP

My 05 gets the WIX 51522XP long filter and holds a steady 40 psi oil pressure at idle. I have been using WIX filters for at least 35 years with no problems.

i went with the 51042XP for the first try, used valvoline synthetic blend 5W30 since I got the truck at 97,000. Approaching 195K now

 

[smcnair]

My 05 gets the WIX 51522XP long filter and holds a steady 40 psi oil pressure at idle. I have been using WIX filters for at least 35 years with no problems.

Curious as to why you used a different filter than what is recommended for your truck? I'm intrigued if it would perform better.

 

[OR VietVet]

Longer filter holds more oil and filters more oil with the larger filter element. It will not prolong time between oil changes though.

 

[smcnair]

No fitment issues? Hanging down too low?

 

[OR VietVet]

Plenty of clearance on my 05 Z71 5.3L. It is only about 1" longer. There are a few threads here about this as well.

 

[ks03]

i went with the 51042XP for the first try, used valvoline synthetic blend 5W30 since I got the truck at 97,000. Approaching 195K now

Just to add a bit of uncertainty…
My old work van got 5k oil changes, sometimes at Ford, sometimes at a valvoline quick change. Noticed it would knock sometimes under high rpm and high load… then noticed it quit after an oil change… eventually figured out it only did it about 3k after a valvoline oil change, and never after changed at Ford.
Prior to that, I’d be as happy to run valvoline as any brand. But I figured it was one of 2 things, their oil sucks, or that shop was putting 5w30 in 5w20 engines, and didn’t show symptoms until it got dirty enough or deteriorated in some way

 

[OR VietVet]

What oil was the Ford dealer using? Motorcraft oil?

 

[ks03]

What oil was the Ford dealer using? Motorcraft oil?

No idea on brand. I figure there’s a chance valvoline wasn’t pumping 5w20, but highly unlikely to be an issue at ford