Not feeling good about the PF66 filter

Rusty59! said:
This is my milage driving from Michigan to Florida. 70 to 75 mph most of the time. I still don’t understand why GM doesn’t advertise this setup. They keep pushing the 4 cylinder????
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Couldn't agree more.
 
it’s good. Oil analysis said I could go another 7K but I changed anyway. No particles larger than 2 microns so I’m pleased.
 
Rusty59! said:
it’s good. Oil analysis said I could go another 7K but I changed anyway. No particles larger than 2 microns so I’m pleased.
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That is good! Usually, diesels soot out their oil before the oil breaks down.
 
That’s why I think I’ll change it at manufactures recommendation during the warranty period. The analysis showed TBN was still really good in the oil even though Amsoil says their 0W-20 isn’t recommended for extended drain intervals.
 
Don’t use any of the newer PF66 oil filters… they are complete junk now IMO and have been cheapened big time. No metal cap on both ends. The relief spring at the bottom was also upside down I believe when I cut it open (99% sure unless they had put them back together and in backwards by mistake..?) based on YouTube videos I have watched. :mad:

Edit: I looked at the filter components again and it does have the metal end cap but it had separated from the filter (black glue let go). Not really impressed.

I have the UPF66 professional one in on this oil change so I guess I’ll see how this one fares when it gets changed next and I cut it open.
 
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Bought the same set up Rusty has. Ran into problems with the Oil Filter stud having a bypass built into the fitting.
I bought a Hamburgers Adapter with straights and it bottomed out on the fitting for the oil filter. Never could get it to seal to filter housing.
Does anyone know if I can replace the oil filter stud with a different style that does not have the bypass valve built into it?
What I have would work great if that would be the case.
 
Rusty...how much was that CNC'd oil filter adapter cost you for the Amsoil Bypass? I need one!
 
Mikeeboy said:
Rusty...how much was that CNC'd oil filter adapter cost you for the Amsoil Bypass? I need one!
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A friend of mine owns a machine shop so it only cost me $70 for the aluminum and $27 for the special tap.
I would think most machine shops would charge $250 to $350 to machine.
 
Yea, you got a smoking deal. Think he would do another and ship it to me for say $150-200?
 
Probably not but I could share the drawing file with you and you could see what local shops would charge.
 
Finally can up with the solution for me to install the Amsoil BK23 oil bypass. Check out pictures. I removed the filter post and dremel cut the extension to allow my Hamburgers Adapter to mount to the post.
 

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I mounted the Hamburgers Adaptor and hooked up the hoses and good to go! I am Pumped!
 

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Drove in town today but did notice a pressure rise on starting going. Went up to 70lbs then dropped as got going down the road a bit to around 30.
I will be going to Longview tomorrow. 2hr trip for me and all Interstate 20. I’ll post my experience.
 
Good writeup. Glad it's working.
 
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