A good read, regarding 0w Viscosity engine oil.

[Old Dogger]

https://www.pennzoil.com/en_us/education/know-your-oil/0w-viscosity-faqs.html

Sponsored

 

[ALRUI]

I'll give it a look. Kind of a turn off when the first item is about saving the planet. I want my oil to save the engine

 

[CarbonSteel]

I'll give it a look. Kind of a turn off when the first item is about saving the planet. I want my oil to save the engine

Seems more than a little disingenuous to equate the "0" on the left side of the "W" in an oil to how it will save fuel and reduce emissions given it only comes into play below a certain temperature.

It's the number on the right side of the "W" that matters when discussing that part of it--especially its HTHS specification.

Viscosity is notated using the common classification “XW-XX”. The number preceding the “W” (winter) rates the oil’s flow (viscosity) at zero degrees Fahrenheit (-17.8 degrees Celsius). The lower the number, the less the oil thickens in cold weather. The numbers after the “XW” indicate viscosity at 100 degrees Celsius and represent the oil’s resistance to thinning at high temperatures.

With that said, I run 0W-30 at least half the year, but sometimes year-round in my 3.6L (M1 ESP) because it is thin enough in the winter, but still provides more protection in the summer than a xW-20 can.

 

[speedymart]

I also suggest running 0w-30 in the 3.6l upgrade

 

[Paul Walton]

Hey gents. I'm new to the forum but this sparked my interest as soon as we picked up the Jeep last week. 0W20 seems a bit much unless you live in Alaska and you're exposed to -40 temperatures on a fairly regular basis.

I won't be pushing my luck while we're still under warranty, but for Eastern Ontario, I'm sure 5W20 is sufficient.

 

[1BadManVan]

Hey gents. I'm new to the forum but this sparked my interest as soon as we picked up the Jeep last week. 0W20 seems a bit much unless you live in Alaska and you're exposed to -40 temperatures on a fairly regular basis.

I won't be pushing my luck while we're still under warranty, but for Eastern Ontario, I'm sure 5W20 is sufficient.

0w20 is generally a better quality oil, better base stocks and additives. You’re not losing any protecting running a 0w oil, it flows better when cold, but same protection as 5w20 when warmed up since the second number is the weight at operating temp.

Sponsored