5W 30 versus 0W 20

[Jeep Junkie]

I have a line on buying into a bridge in New York if you're interested...

Brooklyn bridge?

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[CarbonSteel]

All I know is that I tried 12.2 thick oil once and the thing took a whopping 35 minutes to completely get to the oil pan so that I could get a full reading on both sides of the dipstick, compared to PUP 0W20's 17 minutes. I tried that twice on two more level surfaces to make sure and same result. I freaked out and immediately drained it out. My engine runs so hot already and 12.2 thick oil is too slow to transfer the heat away fast. Oil is also used for cooling the engine. I fear slow cooling will kill my Pentastar's head in the long term. ESP 0W30 is too thick, and ESP 0W20 too thin(Only 7.9). PUP 0W20 and Mobil 1 EP 0W20 are 8.8. A 9.5 thick oil will be sweet for my Pentastar but such oil doesn't exist

Sorry man...but as someone who has used M1 ESP in multiple vehicles for tens of thousands of miles, this entire paragraph is bovine scatology.

I highly recommend (as I have before) that you stop wasting your time + money and eliminate the hand-wringing by allowing the dealer to service your vehicle, or maybe better yet, buy an electric that requires no such maintenance.

 

[CarbonSteel]

Also, I recently learned that 5W30's "5W" becomes 10W with use, that's scary.

Ummm...no, it doesn't--you are talking about the HPL oil--and you cannot extrapolate the HPL "experience" to EVERY oil on the market. Nearly every DI engine on the market will reduce the viscosity of the oil during use--HPL appears to be the Frankenstein of oils that thickens.

Also, unless you are sitting in the middle of Siberia in January, even IF 5W became 10W, it would not matter. What is so "scary" about 10W-xx oil?

 

[Jeep Junkie]

Ummm...no, it doesn't--you are talking about the HPL oil--and you cannot extrapolate the HPL "experience" to EVERY oil on the market. Nearly every DI engine on the market will reduce the viscosity of the oil during use--HPL appears to be the Frankenstein of oils that thickens.

Also, unless you are sitting in the middle of Siberia in January, even IF 5W became 10W, it would not matter. What is so "scary" about 10W-xx oil?

No, I am positive. All 5W become 10W. Ask anyone on BITOG. Oil's cold flow properties get degraded. Again, I am positive.

 

[grimmjeeper]

No, I am positive. All 5W become 10W. Ask anyone on BITOG. Oil's cold flow properties get degraded. Again, I am positive.

Someone said it on the Internet. It must be true.

After that bridge, we should talk about oceanfront property in Nebraska. I have a great brochure you should read.

 

[Jeep Junkie]

Someone said it on the Internet. It must be true.

After that bridge, we should talk about oceanfront property in Nebraska. I have a great brochure you should read.

Laughed hard at that brochure

 

[Dusty Dude]

No, I am positive. All 5W become 10W. Ask anyone on BITOG. Oil's cold flow properties get degraded. Again, I am positive.

Ok, for the sake of argument, let’s say that does happen, but think about this aspect. The contaminants in your oil are thinning it out. At some point, the contaminants will cause a problem, which is why you are changing your oil in only 5k or less. The thickening of the oil is nowhere near as bad as the presence of those contaminants that have NO viscosity whatsoever.

I used to use 10W-40 oil year round in Minnesota, which I would argue is just as cold as Siberia

 

[Jeep Junkie]

Ok, for the sake of argument, let’s say that does happen, but think about this aspect. The contaminants in your oil are thinning it out. At some point, the contaminants will cause a problem, which is why you are changing your oil in only 5k or less. The thickening of the oil is nowhere near as bad as the presence of those contaminants that have NO viscosity whatsoever.

I used to use 10W-40 oil year round in Minnesota, which I would argue is just as cold as Siberia

My dad runs 20W60 diesel oil in his 1998 Toyota 4Runner in Kabul Afghanistan 🫣. Kabul gets as cold as Denver. This winter it got down to 5° fahrenheit, and he says that the truck started fine

 

[grimmjeeper]

Ok, for the sake of argument, let’s say that does happen, but think about this aspect. The contaminants in your oil are thinning it out. At some point, the contaminants will cause a problem, which is why you are changing your oil in only 5k or less. The thickening of the oil is nowhere near as bad as the presence of those contaminants that have NO viscosity whatsoever.

I used to use 10W-40 oil year round in Minnesota, which I would argue is just as cold as Siberia

I lived in MN for a while. I would argue it's colder. If not, then where my parents grew up (North Dakota) would qualify...

 

[CarbonSteel]

No, I am positive. All 5W become 10W. Ask anyone on BITOG. Oil's cold flow properties get degraded. Again, I am positive.

Show me certified test results that prove it--not BITOG rhetoric. The oil in my Bronco with its 5% or greater fuel dilution DOES NOT degrade its cold flow properties--they improve due to the dilution e.g.--the oil becomes thinner. The same thing happens to plenty of other oils in other DI engines.

Are you trying to suggest that only the xW number becomes thicker while the Wxx number becomes thinner?

 

[CarbonSteel]

My dad runs 20W60 diesel oil in his 1998 Toyota 4Runner in Kabul Afghanistan 🫣. Kabul gets as cold as Denver. This winter it got down to 5° fahrenheit, and he says that the truck started fine

Surprised that you can still buy API SG and that API is used there versus ACEA, but that is another conversation.

It is easy to see why it would start at 5°F, but that would be about the limit (-15C = +5F):

https://www.machinerylubrication.com/Read/23788/motor-oil-viscosity

 

[Jeep Junkie]

For your logistics temperatures, I would think that 0W30 would be a good choice! PUP does not offer a 0W30 weight engine oil. One of my friends runs Amsoil 0W30 in his new Wrangler, but he resides in Michigan. But Amsoil pricing is just not even in the Ballpark..IMO. If I was to run 0W30, Mobile 1 ESP, would probably be my go-to oil.

@Flip

I just learned that Pennzoil Euro LX 0W-30 is known as Shell Helix Ultra in the rest of the world, it boasts about PurePlus natural gas stuff in the datasheet so that's PUP 0W-30

 

[roaniecowpony]

I just learned that Pennzoil Euro LX 0W-30 is known as Shell Helix Ultra in the rest of the world, it boasts about PurePlus natural gas stuff in the datasheet so that's PUP 0W-30

Likely the additive package is different.

 

[Jeep Junkie]

Likely the additive package is different.

Yeah, crazy Boron and no Moly

 

[GW’s JL]

Long time lurker, finally joined yesterday. This is my opinion on the matter.

Normal pedestrian driving my oil temps are between 195f to 212f. 0W-20 is 100% acceptable and preferred.

Off roading my oil temps are 236f to 248f. 0W-20 is no longer appropriate.

I have settled on 0W-30 for all circumstances. Great cold cranking rating and high temperature protection. Currently using M1 ESP in my 21 JL 3.6.

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