Kia Stinger 5W-30 to 10W-30 Switch & SuperTech vs Mobil 1

[losvazz]

Stock Kia Stinger 3.3L Twin Turbo, has an oil change coming up in about 1,000 miles. For the past 20k miles, I have been using Mobil 1 Advanced Full Synthetic 5W-30 and saw Supertech Full Synthetic was on sale at my local Walmart. I was also contemplating switching to 10W-30 per a Kia Technical Service Bulletin for warmer temperatures since I live in Phoenix. However, I had a few questions like... Will there be any issues with switching from 5W-30 to 10W-30? I'd assume not considering Kia's TSB. And is there any harm in switching from M1 to a brand like SuperTech? Lastly, will SuperTech's Full Synethic be fine or should I pay a bit more for the Advanced Full Synthetic? Any and all info is appreciated!

 

[facility1]

why not stay with what you have been using ,or go with Mobil 1 10w-30 EP ?,,Advanced synthetic is Valvoline is what you mean?,it is a fine oil also ,,there is no problem in what ever you decide to go with, a 10w-30 oil or name brand. The small difference in price over super tech is only a few dollars.stay on top of your oci ( 5 thousand miles or 6 month) and use a good filter.

 

[Jetronic]

There's no issue going to a higher winter rating, if that rating is still sufficient for the conditions. However, there could be an issue if you go to an oil with lesser quality base stock, as 10W-30 would allow over 5W-30. If the same quality of bas stock is used, the 10W-30 will have less viscosity index improvers in it, would be less prone to viscosity breakdown, and have lower Noack and higher flashpoint. Those are all good qualities.

I can't find any data sheets foe either oil, which could give a clue to how they are made, maybe you have better luck?

 

[CharBaby]

OTOH...The SuperTech Full Synthetic will be just fine in either 5W30 or 10W30.
And no, you don't have to move into the SuperTech Advance Full Synthetic.
However, if you drive your Stinger like you stole it or if you track your car on weekends and such, then I stick with Mobil1
or as facility1 mentioned, using a higher quality oil and keep it changed.

ProjectFarm(who many don't care for), did a VOA(virgin oil analysis) from Blackstone Labs, on both SuperTech 10,000 mile & 20,000 mile Full Synthetic Oils.

 

[losvazz]

OTOH...The SuperTech Full Synthetic will be just fine in either 5W30 or 10W30.
And no, you don't have to move into the SuperTech Advance Full Synthetic.
However, if you drive your Stinger like you stole it or if you track your car on weekends and such, then I stick with Mobil1
or as facility1 mentioned, using a higher quality oil and keep it changed.

ProjectFarm(who many don't care for), did a VOA(virgin oil analysis) from Blackstone Labs, on both SuperTech 10,000 mile & 20,000 mile Full Synthetic Oils.

Forgive me for my lack of knowledge but will a 10W-30 not fair better in the Arizona heat? I was under the assumption that it would, however if that is not the case and 5W-30 and 10W-30 will preform equally in Arizona’s extreme heat then I will stay with the 5W-30 that I’ve been using. I was just wanted to make the change to a 10W-30 because I thought I’d get greater performance out of it, considering the heat and I drive my car on the aggressive side, no track days just spirited daily driving.

 

[CharBaby]

Neither you nor your engine will notice any difference with either grade oil(5W30 or 10W30). But there is waaaaay more to it than the difference between a 5W & 10W. How do you drive? Or I should ask...How hard do you drive? Do you drive aggressively or more easily with some wide open throttle(WOT) sprints. I mean, have some fun with the Stinger right?

It's not just the AZ heat, it has to do with many other factors. For example, it's not just your outside temperatures, it's also how hot does your engine run. Meaning, in our NorthEast Winters where I live, I may want the 5W for better cold starting in the morning. But in the Summers, I may use the 10W. But that doesn't mean that I can't use a 5W or even a 0W

However a 0W(0W30, 0W40) is still fine. Keeping in mind that the first number(0W, 5W or 10W) is your cold starting(start-up) grade. And the next number(W30, W40 etc) is your running(warm/hot engine) grade. Just because it's 110 deg's F in Phoenix, it's still a cold start-up.

The larger the spread between the two numbers(5W30 or 10W30) in this case, the more VII's(viscosity index improvers) need to be added. So, a 5W30 had more VIIs than a 10W30. And it's the extra VII's added to the 5W oil that tend to make the oil shear out of grade sooner than a 10W oil. However, there is even more to than just what I mentioned.

You may be over thinking this as well. And because you're new to this forum, there is much to learn. In your case, use a good quality oil/filter and change it regularly. There is nothing in the least wrong with SuperTech oils. They meet API specifications that are suitable for your Stinger. If you track your car or beat the snot out of your engine, use better oils. And don't forget about the tranny!

 

[Urshurak776]

In Phoenix there is barely even a negligible difference between 5W-30 and 10W-30 on your coldest day of the year. Arizona Republic news outlet said that 2023 had one of the coldest years on record for the Phoenix area. Average low was around 51 degrees, so, doesn't matter.

At 5K interval, doubt it would matter much what you use. Stick with the Mobil 1. If money is a concern, grab the Supertech.

I would worry more about your tires to be honest.

Welcome to BITOG BTW. I see you're new.

 

[kschachn]

Winter rating is completely unimportant living in Phoenix. In accordance with the manual recommendation I would use an ACEA A3 oil especially in a twin-turbo engine. Many are available at Walmart including Mobil 1 or Castrol 0W-40. or whatever is on Rollback or sale that has the ACEA Sequence. That Sequence is there for a reason. Look on the containers and buy which one is least expensive, and ignore the grade. It is irrelevant with A3.

 

[Triple_Se7en]

Yes 10w30 would be a great choice for summer in Phoenix - even winters there.
I have used both Supertechs and the Advanced 20k version holds up better.

 

[NibbanaBanana]

Stock Kia Stinger 3.3L Twin Turbo, has an oil change coming up in about 1,000 miles. For the past 20k miles, I have been using Mobil 1 Advanced Full Synthetic 5W-30 and saw Supertech Full Synthetic was on sale at my local Walmart. I was also contemplating switching to 10W-30 per a Kia Technical Service Bulletin for warmer temperatures since I live in Phoenix. However, I had a few questions like... Will there be any issues with switching from 5W-30 to 10W-30? I'd assume not considering Kia's TSB. And is there any harm in switching from M1 to a brand like SuperTech? Lastly, will SuperTech's Full Synethic be fine or should I pay a bit more for the Advanced Full Synthetic? Any and all info is appreciated!
View attachment 229517

I started using regular M1 10w-30 in my wife's kia. For our temps the manual said 10w-30 was good. And since the car is direct injected I thought heavier oil might be an advantage in avoiding valve deposits.

 

[TurboZedd-R]

Any Xw30 will be just fine from mobil 1, castrol, etc. I personally ran amsoil in my 3.3.

 

[Plawan]

Forgive me for my lack of knowledge but will a 10W-30 not fair better in the Arizona heat? I was under the assumption that it would, however if that is not the case and 5W-30 and 10W-30 will preform equally in Arizona’s extreme heat then I will stay with the 5W-30 that I’ve been using. I was just wanted to make the change to a 10W-30 because I thought I’d get greater performance out of it, considering the heat and I drive my car on the aggressive side, no track days just spirited daily driving.

As was touched on, the 10w30s usually use a little less VIIs. Little less likely to break down and cause deposits. That’s really the only real potential prefomance benefit by switching from 5w30 to 10w30. I don’t hesitate to grab 10w30 here in Texas instead of 5w30. It’s a good enough reason for me.

 

[Zaedock]

We run Castrol 0W40 in my wife's GT2. A3 and inexpensive from Walmart.

 

[edyvw]

Any Euro with MB229.5 approval. My pick would be Mobil1 0W40.
If you want to pay bit more, get Castrol Edge 0W30 on Amazon.

 

[blufeb95]

I'd consider this, 5W-40 A3/B4 with all the long drain Euro Specs, around $21 and some change a jug in this 3 pack, https://www.walmart.com/ip/Mobil-1-...W-40-5-Quart-Pack-of-3/389304923?athbdg=L1800

 

[OilUzer]

Living in AZ, TT, Summer ... May call for a Euro 40 or that's what I would do. Or at a minimum a 10W-30. Euro oil are inexpensive!

The only 10W I use in my cars, is M1 EP 10W-30.

Nice to see Viscosity / Temperature Charts. According to some members, they don't exist!

 

[weldor]

Neither you nor your engine will notice any difference with either grade oil(5W30 or 10W30). But there is waaaaay more to it than the difference between a 5W & 10W. How do you drive? Or I should ask...How hard do you drive? Do you drive aggressively or more easily with some wide open throttle(WOT) sprints. I mean, have some fun with the Stinger right?

It's not just the AZ heat, it has to do with many other factors. For example, it's not just your outside temperatures, it's also how hot does your engine run. Meaning, in our NorthEast Winters where I live, I may want the 5W for better cold starting in the morning. But in the Summers, I may use the 10W. But that doesn't mean that I can't use a 5W or even a 0W

However a 0W(0W30, 0W40) is still fine. Keeping in mind that the first number(0W, 5W or 10W) is your cold starting(start-up) grade. And the next number(W30, W40 etc) is your running(warm/hot engine) grade. Just because it's 110 deg's F in Phoenix, it's still a cold start-up.

The larger the spread between the two numbers(5W30 or 10W30) in this case, the more VII's(viscosity index improvers) need to be added. So, a 5W30 had more VIIs than a 10W30. And it's the extra VII's added to the 5W oil that tend to make the oil shear out of grade sooner than a 10W oil. However, there is even more to than just what I mentioned.

You may be over thinking this as well. And because you're new to this forum, there is much to learn. In your case, use a good quality oil/filter and change it regularly. There is nothing in the least wrong with SuperTech oils. They meet API specifications that are suitable for your Stinger. If you track your car or beat the snot out of your engine, use better oils. And don't forget about the tranny!

From what I've read the oil goes from the low # to the high # (5 or 10 to 30) at around 100 degrees. And the higher # is the one I would be concerned about, as long as it is what they reccomend. The 5 will be a 10 at some time as the oil heats up and becomes a 30. Therefore if you live in a warm climate with mild winters either would be OK IMHO.

 

[blufeb95]

From what I've read the oil goes from the low # to the high # (5 or 10 to 30) at around 100 degrees. And the higher # is the one I would be concerned about, as long as it is what they reccomend. The 5 will be a 10 at some time as the oil heats up and becomes a 30. Therefore if you live in a warm climate with mild winters either would be OK IMHO.

The W rating plays very little into the viscosity until you reach below about 0F