Which Oil filter do you use.

[swathdiver]

Did the oil filter threads change with the GMT-900 models? My '04 filter has SAE threads.

Yes, they are M22 on the Gen IVs.

 

[corvette744]

Alright, this was done about 2018 or 2019:

View attachment 359877

I have personally used the PF63E, the M1-212A and the HP2011 on my truck. The Mobil One filter dropped my oil pressure about 2-3 psi compared with the other two. From the 1980s through the 2000s our family used FRAM filters without issue, even when we were broke and had to reset the OLM a few times. I used ACDelco filters in my muscle cars back in the day. Probably going to buy a case of PF63s for the Sierra since it goes through oil changes every two months. The K&Ns are probably the most expensive, they are about $15 each right now. The PF63s are $8-9 each.

So are those the only ones you have tried out specs look good-my oil pressure dropped with the royal purple from the mobil 1 by about 4 psi.That is what im most interested in oil pressure readings cold were i live its 2 degrees out now and only going to get colder soon.Also summer heat readings.All using the same oil and about the same mileage.Looking to see oil pressure differences and oil color at 1-3-4k miles.Only oil is mobil 1 full synthetic.5w-30

 

[swathdiver]

So are those the only ones you have tried out specs look good-my oil pressure dropped with the royal purple from the mobil 1 by about 4 psi.That is what im most interested in oil pressure readings cold were i live its 2 degrees out now and only going to get colder soon.Also summer heat readings.All using the same oil and about the same mileage.Looking to see oil pressure differences and oil color at 1-3-4k miles.Only oil is mobil 1 full synthetic.5w-30

Well, when the spreadsheet was started there were a few more which were dropped from consideration. The Napa was the same as WIX if memory serves. I did notice recently that RockAuto was selling both PF63E and PF63 filters, so did GM begin producing the older style again?

I used Mobil One synthetic since the 1980s. Until about 2010 it was a Group IV base oil. Now it is a Group III, not as refined. I switched vehicles but did not like the morning rattle on my truck. Made an even more exhaustive study of oil and settled on the new ACDelco Full Synthetic. Picked up a quarter mpg and no more rattle. Shell's Rotella Gas Truck has very similar numbers and if the oil becomes to difficult to obtain, I'll switch to that. Again, this research was done in 2018-2019.

Motor is aluminum, so tolerance are not as tight. With M1 filter, pressure on hot summer days would drop into very low 20s, sometimes saw 19 psi even. This was in gear, stopped at a light and after 4K miles. Still well within spec, just not used to it. K&N and new oil hasn't dropped below 24 psi that I've noticed during same conditions, usually a little higher.

 

[Bill 1960]

So are those the only ones you have tried out specs look good-my oil pressure dropped with the royal purple from the mobil 1 by about 4 psi.That is what im most interested in oil pressure readings cold were i live its 2 degrees out now and only going to get colder soon.Also summer heat readings.All using the same oil and about the same mileage.Looking to see oil pressure differences and oil color at 1-3-4k miles.Only oil is mobil 1 full synthetic.5w-30

Have you seen the videos by Project Farm where he’s testing cold flow of various oils?

 

[corvette744]

Have you seen the videos by Project Farm where he’s testing cold flow of various oils?

Yes mobil 1 is always in the top 3 i believe.

 

[corvette744]

Well, when the spreadsheet was started there were a few more which were dropped from consideration. The Napa was the same as WIX if memory serves. I did notice recently that RockAuto was selling both PF63E and PF63 filters, so did GM begin producing the older style again?

I used Mobil One synthetic since the 1980s. Until about 2010 it was a Group IV base oil. Now it is a Group III, not as refined. I switched vehicles but did not like the morning rattle on my truck. Made an even more exhaustive study of oil and settled on the new ACDelco Full Synthetic. Picked up a quarter mpg and no more rattle. Shell's Rotella Gas Truck has very similar numbers and if the oil becomes to difficult to obtain, I'll switch to that. Again, this research was done in 2018-2019.

Motor is aluminum, so tolerance are not as tight. With M1 filter, pressure on hot summer days would drop into very low 20s, sometimes saw 19 psi even. This was in gear, stopped at a light and after 4K miles. Still well within spec, just not used to it. K&N and new oil hasn't dropped below 24 psi that I've noticed during same conditions, usually a little higher.

So your recommendation is the k&n hp filters and ac delco full synthetic.If so i will test that next go around.What part number do you have for my filter.So the new ac delco oil is different than the old how old is the old oil i have some around.

 

[swathdiver]

So your recommendation is the k&n hp filters and ac delco full synthetic.If so i will test that next go around.What part number do you have for my filter.So the new ac delco oil is different than the old how old is the old oil i have some around.

HP-1007 is the original size filter, not sure of the long one. The original oil was a synthetic blend. On ACDelco's parts website, they listed full synthetic for my year and 4x4s and synthetic blend for RWD, so to me a the time, that was new.

I have seen other part numbers for synthetic oil but these are the ones listed on their website for the 2009 and 2012. I've been buying it at RockAuto. I can get it about an hour south but RA is more convenient. The 5 quart bottles are package 3 to a box, you can buy less. Two boxes is 4 or 5 oil changes.

 

[gooffeyguy]

HP-1007 is the original size filter, not sure of the long one. The original oil was a synthetic blend. On ACDelco's parts website, they listed full synthetic for my year and 4x4s and synthetic blend for RWD, so to me a the time, that was new.

View attachment 359930

I have seen other part numbers for synthetic oil but these are the ones listed on their website for the 2009 and 2012. I've been buying it at RockAuto. I can get it about an hour south but RA is more convenient. The 5 quart bottles are package 3 to a box, you can buy less. Two boxes is 4 or 5 oil changes.

I thought the K&N short was HP-1017 and the long was HP-2011

 

[swathdiver]

I thought the K&N short was HP-1017 and the long was HP-2011

For ours, that's for an 800 with SAE threads.

 

[mwswarrior]

Excellent source for very reasonably priced, high quality filters. Been using them for years: https://www.fleetfilter.com/

 

[swathdiver]

Excellent source for very reasonably priced, high quality filters. Been using them for years: https://www.fleetfilter.com/

Cool site, used to sell a ton of Baldwin filters of all kinds to big rig and heavy equipment operators.

 

[Old Goat]

Try Amazon.

 

[TerryKing]

2012 Tahoe 5.3: VERMONT sometimes "Wicked COLD!"

I switched to Mobil1 filter (And oil) after searching on "Low Oil Pressure Cold Start". I had a couple of -5F starts where the oil pressure indication came up so slowly that the "Low Oil Pressure Stop Engine" warning came on. Saw some discussion that Mobil1 was better. So I switched..

Oil pressure does come up definitely faster on cold start; no more warnings. Warm oil pressure is normal: 20 PSI Idle, 30 PSI running (200,00+ miles)

Oil looks good at 3-4000 mile changes.

WORKS For Me...

Thanks for all the great shared knowledge here!

Regards, Terry King
...In The Woods In Vermont
The one who dies with the most Parts LOSES! WHAT DO YOU NEED??

 

[dwkehoss]

After 50 years of changing oil, 15 of which as full time mechanic and the rest part time and on the side, I dont pay much attention to brand of oil or filter as long as you change it at normal intervals.

 

[corvette744]

After 50 years of changing oil, 15 of which as full time mechanic and the rest part time and on the side, I dont pay much attention to brand of oil or filter as long as you change it at normal intervals.

I notice a difference when it below zero here with different synthetic oils i have tested.I also have noticed differences with oil filter and different pressure reading hot or cold here so their is some variance.Starting my hoe 0 to -20f and its easy to tell about oil thickness and or filter flow on cold start.Basing everything off 5w-30

 

[Mudsport96]

Fram XG3675 or Amsoil EAO64

Both *very* high quality synthetic filters w/ the long can. Wouldn't touch the rest of Fram's lineup with a 10ft pole, but their ultra synthetics are on point. And well.. Amsoil is Amsoil.


IMO, better filter > better oil. Even the best oil will do you no good if it has floating particulates and contaminants in it

Well, with my experiences with my f150 and the Silverado i got off of the father in law. Run a quality filter and any oil that isnt basically Dollar General brand and you will be fine.

1995 F150 5.0- 307071 miles

Always a motorcraft fl-1a filter while ive had it since 140k miles.
Oil whatever was cheapest by weight and brand
SuperTech
Traveller (Tractor Supply brand)
Oreilly house brand
Pennzoil (specifically sae hd40 weight)
Mystery hd 30wt from the barrel at work.

2006 5.3 Silverado 406000 miles (got it at 395k)
Father in law says dealership changes from new till 120k so delco oil and filters

120k to 250k
Microguard, wix, ac delco filters

Oil valvoline 5w30

250k to 395k
Same filters
Oil orielly house.

Intervals when he remembers

 

[corvette744]

Well, with my experiences with my f150 and the Silverado i got off of the father in law. Run a quality filter and any oil that isnt basically Dollar General brand and you will be fine.

1995 F150 5.0- 307071 miles

Always a motorcraft fl-1a filter while ive had it since 140k miles.
Oil whatever was cheapest by weight and brand
SuperTech
Traveller (Tractor Supply brand)
Oreilly house brand
Pennzoil (specifically sae hd40 weight)
Mystery hd 30wt from the barrel at work.

2006 5.3 Silverado 406000 miles (got it at 395k)
Father in law says dealership changes from new till 120k so delco oil and filters

120k to 250k
Microguard, wix, ac delco filters

Oil valvoline 5w30

250k to 395k
Same filters
Oil orielly house.

Intervals when he remembers

I would never run a conventional oil were i live.If it get's cold and its only 6 degrees out now so thats not really cold here.Every video i have seen shows conventional oil doesnt even move in those temps.I would never run anything but a good oil filter and synthetic oil but to each his own.What would you want in your oil pan or filter when its 0 or 20 below zero.

 

[Mudsport96]

I would never run a conventional oil were i live.If it get's cold and its only 6 degrees out now so thats not really cold here.Every video i have seen shows conventional oil doesnt even move in those temps.I would never run anything but a good oil filter and synthetic oil but to each his own.What would you want in your oil pan or filter when its 0 or 20 below zero.

Barring extreme temps... conventional oil is okay for 99 percent of applications.
But, to answer the question.
Friday it was 15 below here and i left for work at 3 am. Truck cranked a little slow but not bad, and the autometer oil gauge showed pressure in id say 3 to 5 seconds 5w30 orielly dino juice.... let the clutch out and down the road i go.
Ymmv

 

[corvette744]

Barring extreme temps... conventional oil is okay for 99 percent of applications.
But, to answer the question.
Friday it was 15 below here and i left for work at 3 am. Truck cranked a little slow but not bad, and the autometer oil gauge showed pressure in id say 3 to 5 seconds 5w30 orielly dino juice.... let the clutch out and down the road i go.
Ymmv

Like i said to each his own good luck.

 

[TerryKing]

Hmmm. Some believe in Luck.. I believe in Metallurgy.

And lubrication theory. My best friend from High School built serious B drag race cars. Much later he became the manager of the Military Jet Engine development group at Pratt and Whitney. "Wow!", he said, "Now I finally actually understand about bearing clearances, oil films and pressure".