M1 vs PUP

[Pape]

You are old school. That stuff that turned to grease has been gone for decades.

Not really, run the gear oil for long enough and you will get grease

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[roaniecowpony]

Not really, run the gear oil for long enough and you will get grease

I ran old school hypoid gear oil in my 79 El Camino for at least 200,000 miles and it was fine. I buttoned it up, filled and ran another 300,000 before I sold it.

 

[Nokones]

Mobil 1 is great oil and there is nothing wrong in using it. However, the Pennzoil Ultra Platinum has more wear protection than any of of the oils today.

 

[roaniecowpony]

Everyone seems to be speaking of Mobil 1 as a single oil. Mobil 1 has about 20 separate formulations, not counting the viscosity variations.

 

[ColtB45]

Everyone seems to be speaking of Mobil 1 as a single oil. Mobil 1 has about 20 separate formulations, not counting the viscosity variations.

 

[azjl#3]

Yeah I think some penzoil use natural gas to make oil, dont know how. I remember in the 70s no one wanted penzoyl as the oil had more wax or something.

I'd use either today.

 

[Nokones]

Yeah I think some penzoil use natural gas to make oil, dont know how. I remember in the 70s no one wanted penzoyl as the oil had more wax or something.

I'd use either today.

I remember it was not recommended to use Pennzoil on the west coast especially in California because of the climate differences than the east coast. They said that Pennzoil was one of the best for the East Coast.

I always thought that was bunk because back in those days any 30W or 40W oil was perfect for the engines of that era. As long as it was a detergent oil it was not critical as it is today.

 

[UTME]

I use PUP because the Jeep dealer uses pennzoil and it’s available at Walmart for a good price. Currently have 42,000 miles on my 2024, change the oil myself every 5000 miles and no issues so far.

 

[jellis4148]

Also, 0w-20 is "recommended."


From my '24 owner's manual:

It also says this in the engine oil section after talking about API. "Lubricants which do not have both the engine oil certification mark and the correct SAE viscosity grade number
should not be used".

 

[Odyssey USA]

Yeah I think some penzoil use natural gas to make oil, dont know how. I remember in the 70s no one wanted penzoyl as the oil had more wax or something.

I'd use either today.

Those base stocks derived from natural gas are known as GTL’s if you come across that term.

 

[TrailMax]

Yeah I think some penzoil use natural gas to make oil, dont know how. I remember in the 70s no one wanted penzoyl as the oil had more wax or something.

I'd use either today.

My understanding is that Pennsylvania crude oil has a high "wax" content, as with many things some people liked that and others hated it. I do remember back in the early '80s I was helping a buddy rebuild an engine he bought, and when I pulled the heads the valves had so much deposits that it almost completely filled the pocket. I can't remember exactly what I said, but in response he came over, looked, and said "Yep. They must have used Quaker State oil."

 

[Odyssey USA]

I guess if I had to choose, it would be Mobil 1 ESP 0w-20 hoping they also use the higher quality PAO/AN/Ester base stock to retain the viscosity better while also having more stringent than API, ACEA certifications.

 

[Rogersocal]

For me its Royal Purple or Valvoline

 

[roaniecowpony]

It's not looking like oil will save our 3.6 cams.

 

[IRISH ISLANDER 4X4 DIY]

It's not looking like oil will save our 3.6 cams.

Could be some truth to that, But Im still using my Mobil 1 ........... 0w-40 European Car Oil My 3.6 non e-torqe engine runs smooth and quiet, and noticed if a few days go buy when my jeep sits unused, i dont get that nasty timing chain noise on startup. It is my top choice oil.

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