Are 0w20 and 5w20 100% interchangeable?

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Wonder what will become of the Syn Blend 0w20 with Dexos certifications once Dexos1gen3 comes around, will GM still allow oils to be sold as Dex1Gen2? Will Pennzoil reformulate Gold even though it involves blending more GTL into it to the point where you wonder if it's really any more cost efficient the Pennzoil Platinum, Will they just can Gold because it's so close to Platinum that it doesn't make any sense to keep both products, Does anyone really buy Pennzoil Gold it's always pretty close in price to Platinum to the point where I don't get the point of it, maybe they sell a lot of it bulk to dealers and quick lube places?
 
The Gold jug I bought in January was priced between Yellow Bottle and Platinum..... 16-19-22. It was one of those 'whim' purchases and that meant I messed-up twice in a row. Just weeks prior, I accidentally picked-up and purchased Platinum HM instead of regular Platinum.

I ended-up blending both 50-50 and using it currently in our Kia. Both oils fell in love with each other.....lol
 
Originally Posted by jayjr1105
Originally Posted by Char Baby
All 0W20s are synthetic but not all 5W20s are.

I think Pennzoil and Motorcraft have a 0w20 syn blend.


Possibly, IDK!
smile.gif

I have also heard that ACDelco's 0W20 is a syn/blend but again, IDK!

And if Pennzoil & MotorCraft 0W20 are blends, they're not sold/available in all markets. I mean, I don't see'em in my neck of the woods. And I'm not gonna strain my brain to find'em!
smile.gif
 
Originally Posted by csandste
Originally Posted by jayjr1105
Originally Posted by Char Baby
All 0W20s are synthetic but not all 5W20s are.

I think Pennzoil and Motorcraft have a 0w20 syn blend.

Shouldn't respond before checking things out but....

Lots of syn-blend oils (5w-20 and 5w30 still market themselves as conventional because they have "syn-blend" brands marketing themselves at a higher price point.

Could these "syn blends" be all synthetic (i.e. group 3) and marketing themselves as syn blends because there's a "synthetic" at a higher price point?

It will be interesting to see how this all shakes out when SP oils hit. Lots of branding confusion ahead.


Indeed!
 
Originally Posted by jayjr1105
Any exceptions? Assuming both are SN plus is there any reason you shouldn't run one or the other? It's understood that 0wXX is the better option for colder climates.

0W-20 in comparison to 5W-20

Advantages:

  • Better fuel economy due to higher viscosity index (VI)
  • Higher base-oil quality -- you need at least Group III+ to make a dexos1 0W-xx oil, which results in less engine deposits and longer OCIs, whereas a dexos1 5W-20 can be made with cheap Group III


Disadvantages:

  • Base oil probably thinner than for 5W-20, potentially increasing wear
  • Higher VI and more VII content also results in thinner oil over the temperature range and at higher shear rates, potentially increasing wear
  • More VII can potentially increase the engine deposits


I would choose a 0W-20 oil over a 5W-20, knowing that I am simply getting a better synthetic, with longer OCIs and a cleaner-running engine.
 
Gokhan said:
[*]Higher base-oil quality -- you need at least Group III+ to make a dexos1 0W-xx oil, which results in less engine deposits and longer OCIs, whereas a dexos1 5W-20 can be made with cheap Group III[/list]

Good point and one I think of often staying with 0w20 even in Texas. Even hope you can help crack the nut on how many 5w30 "synthetics" are using a percentage of GII made possible only in the last few years.
Dexos 5w30 is an ideal target for these … 0w20 not so easy.
 
Originally Posted by Gokhan

0W-20 in comparison to 5W-20

Advantages:

  • Better fuel economy due to higher viscosity index (VI)
  • Higher base-oil quality -- you need at least Group III+ to make a dexos1 0W-xx oil, which results in less engine deposits and longer OCIs, whereas a dexos1 5W-20 can be made with cheap Group III


Disadvantages:

  • Base oil probably thinner than for 5W-20, potentially increasing wear
  • Higher VI and more VII content also results in thinner oil over the temperature range and at higher shear rates, potentially increasing wear
  • More VII can potentially increase the engine deposits


I would choose a 0W-20 oil over a 5W-20, knowing that I am simply getting a better synthetic, with longer OCIs and a cleaner-running engine.


Thanks for all you contribute to BITOG. I asked this in another thread but it got buried. I use VAS 0W-20 in our 2016 Honda HR-V and the same oil in 5W-20 in our daughters 2019 Hyundai Santa Fe with the (in)famous 2.4L GDI. Just purchased a 2020 Ram 1500 Laramie and since FCA recommends 5W-20 I plan on using the VAS 5W-20 in it after I put a few thousand miles on the factory fill.

I really like the VAS 5W-20 because of its low Noack of 7.6 and viscosity index of 147. Is it possible the VAS 5W-20 is made with the same base oil as the 0W-20 with a lower percentage of vii's?

Thanks.
 
Originally Posted by farrarfan1
Thanks for all you contribute to BITOG. I asked this in another thread but it got buried. I use VAS 0W-20 in our 2016 Honda HR-V and the same oil in 5W-20 in our daughters 2019 Hyundai Santa Fe with the (in)famous 2.4L GDI. Just purchased a 2020 Ram 1500 Laramie and since FCA recommends 5W-20 I plan on using the VAS 5W-20 in it after I put a few thousand miles on the factory fill.

I really like the VAS 5W-20 because of its low Noack of 7.6 and viscosity index of 147. Is it possible the VAS 5W-20 is made with the same base oil as the 0W-20 with a lower percentage of vii's?

Thanks.

You're welcome. I think the whole VAS line is using Group III+.
 
Originally Posted by Gokhan
Originally Posted by farrarfan1
Thanks for all you contribute to BITOG. I asked this in another thread but it got buried. I use VAS 0W-20 in our 2016 Honda HR-V and the same oil in 5W-20 in our daughters 2019 Hyundai Santa Fe with the (in)famous 2.4L GDI. Just purchased a 2020 Ram 1500 Laramie and since FCA recommends 5W-20 I plan on using the VAS 5W-20 in it after I put a few thousand miles on the factory fill.

I really like the VAS 5W-20 because of its low Noack of 7.6 and viscosity index of 147. Is it possible the VAS 5W-20 is made with the same base oil as the 0W-20 with a lower percentage of vii's?

Thanks.

You're welcome. I think the whole VAS line is using Group III+.

That's good to hear, thanks!
 
Originally Posted by csandste
Originally Posted by jayjr1105
Originally Posted by Char Baby
All 0W20s are synthetic but not all 5W20s are.

I think Pennzoil and Motorcraft have a 0w20 syn blend.

Shouldn't respond before checking things out but....

Lots of syn-blend oils (5w-20 and 5w30 still market themselves as conventional because they have "syn-blend" brands marketing themselves at a higher price point.

Could these "syn blends" be all synthetic (i.e. group 3) and marketing themselves as syn blends because there's a "synthetic" at a higher price point?

It will be interesting to see how this all shakes out when SP oils hit. Lots of branding confusion ahead.






Pennzoil gold has a 0w20 synthetic blend.
 
Originally Posted by Char Baby
Originally Posted by jayjr1105
Originally Posted by Char Baby
All 0W20s are synthetic but not all 5W20s are.

I think Pennzoil and Motorcraft have a 0w20 syn blend.


Possibly, IDK!
smile.gif

I have also heard that ACDelco's 0W20 is a syn/blend but again, IDK!

And if Pennzoil & MotorCraft 0W20 are blends, they're not sold/available in all markets. I mean, I don't see'em in my neck of the woods. And I'm not gonna strain my brain to find'em!
smile.gif



I bought a six gallon box of Pennzoil Gold last year in 0w20 D1.2
Due to circumstances … had the Cruze changed at Jiffy … 5w30 PG that was also D1.2
 
Originally Posted by NuttCase
Originally Posted by ka9mnx
No, API minimum HTHS for all 20's is 2.6.
Did that not change in 2018 in the latest edition of SN and SN plus after a motion to ballot? As per SAE J300 you are correct, but I thought that API had opened up the tolerances a little with the focus on resource conservation.

No, SAE J300 limits always apply. In fact that's their very first footnote.

"All oils must meet the requirements of the most recent edition of SAE J300"

API 1509, Engine-Oil licensing and certification system, 18th edition, June 2019
 
Originally Posted by jayjr1105
Originally Posted by Char Baby
All 0W20s are synthetic but not all 5W20s are.

I think Pennzoil and Motorcraft have a 0w20 syn blend.


So does/did Honda. I do think 0W blends will soon go away. I don't have a Honda but it looks like they might just have full syn now..
 
Yeah, I'm not sure, other than marketing that blends(for the everyman) are needed since most or all conventional 5W20, 5W30, 10W30 & maybe even 10W40 are blended nowadays. Maybe not considered syn blends but blended just the same.
And most of us could blend our own mix just by buying both dino & syn and mixing them.

However, since many really good name brand and even store brand full synthetic oils have become more reasonably affordable(cost effective), why would we specifically buy a blended oil?... except under certain circumstances/specific vehicles/engine.
 
Last edited:
Originally Posted by Gokhan
Originally Posted by NuttCase
Originally Posted by ka9mnx
No, API minimum HTHS for all 20's is 2.6.
Did that not change in 2018 in the latest edition of SN and SN plus after a motion to ballot? As per SAE J300 you are correct, but I thought that API had opened up the tolerances a little with the focus on resource conservation.

No, SAE J300 limits always apply. In fact that's their very first footnote.

"All oils must meet the requirements of the most recent edition of SAE J300"

API 1509, Engine-Oil licensing and certification system, 18th edition, June 2019

That's good info. Thank you.
 
For instance with Amsoil SS the Noack for the 5W-20 and 5w30 is considerably lower than the 0W-20 and 0W-30. With high quality synthetic base oils I can't imagine the 0w vs the 5W making that much difference on cold starts unless one is in an *extremely* cold environment in which case a person probably should have block and pan heaters.

I've seen guys start 40 year old tractors with ether on subzero mornings with Dino 15w40 in the sump, no block heater no oil heater, and somehow those things last forever. I understand a 1970s John Deere diesel is a completely different animal than a 2010s TGDI sedan, but sometimes the OCD around here gets kind of carried away, and I'm as guilty as anyone.
 
Originally Posted by Strjock81
I've seen guys start 40 year old tractors with ether on subzero mornings with Dino 15w40 in the sump, no block heater no oil heater, and somehow those things last forever. I understand a 1970s John Deere diesel is a completely different animal than a 2010s TGDI sedan, but sometimes the OCD around here gets kind of carried away, and I'm as guilty as anyone.

Isn't that something.

Those must be some real men.
 
I would say no. Can you use a 0w20 in place of 5w20? Most cases yes. Vice versa? Only if the 5w20 was synthetic in a warmer climate.
 
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