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Hyundia / Kia GDI 1.6 oil thoughts #5021954 02/24/19 10:06 AM
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ChrisJ Offline OP
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I know this has probably been posted 10,000+ times in the past month but I couldn't find anything exact to my situation so I wanted to ask.

I've been using 5w30 Mobil 1 extended performance in pretty much everything I own for years. My last two engines were 2012 GM 1.4 turbos and I ran them for 10,000 miles and even at 142,000 miles my last engine looked like brand new when I pulled the cam cover. I still have a Cruze that has 80K on it, but I traded my Sonic in.


I just bought a new 2019 Hyundai GDI 1.6 and noticed it calls for 5w20 on the cap, but the manual claims I can use all kinds of stuff. I think it calls for changes every 7500.

99.99% of my driving is 40 mile trips on interstates to and from work at 60-75mph. Very few short trips so I don't think moisture has ever been an issue for me.

Should I continue using Mobil 1 extended performance 5w30 in this engine which is the same as my other car (GM 1.4T) and my lawn mower, snow blower, generators etc. Or buy a specific oil for it? With my driving habits do I need to do it every 7500 or can I squeeze 10K out of it like my previous engines?

I've never owned a GDI engine before but have heard rumor that they can be finicky. This being the case, I will go out of my way if it matters.

Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5021971 02/24/19 10:25 AM
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oil_film_movies Offline
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You could stick with 5w30, to keep your stock in common. You'd only lose about 1% fuel economy from the viscosity difference between a 5w20 & 5w30, not too bad for most people.

Good choice of M1 EP. Its around half PAO and seems to be solid. Their Annual Protection AP is probably better still.

With that highway driving, even with a GDI engine, 10k miles would be easy for M1 EP or AP. I would put on an oil filter that performs at least as good as 99% 20 microns 4548-12 for those long drain periods, and that choice is usually Fram Ultra at walmart or amazon.

Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5021975 02/24/19 10:27 AM
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CT8 Offline
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oil is oil with the proper specs. In my 2.7 i have used Motorcraft, Semi syn and syn Magnetech, M1 high mile and Valvoline High mile and the seat of the pants dyno can't tell any difference.


2015 F150 2.7
2018 F350 6.2
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5021976 02/24/19 10:28 AM
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Snagglefoot Offline
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For a GDI Turbo, look for the SN plus rating. Typically the oil will have something on the front that it is suitable for “ modern Turbo charged engines” and will say SN Plus on the back. It comes in different grades including the 5w20 your engine specs. Many on this forum would suggest going to a 5w30. Here is one example. You can see on the label the part about the turbo engine.

Just noticed you didn’t say turbo for your new engine, but an SN Plus works fine there too. Some folks like seeing the Dexos emblem. (D1G2). GDI are prone to gasoline contamination, so I would prefer to change it earlier rather than trying to save a few bucks pushing it. smile


5AAEED08-E4D7-4C0E-8388-EDCA4025BC1C.jpeg
Last edited by Snagglefoot; 02/24/19 10:37 AM.

If you want the job done right......do it yourself.
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: oil_film_movies] #5021987 02/24/19 10:40 AM
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ChrisJ Offline OP
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Originally Posted by oil_film_movies
You could stick with 5w30, to keep your stock in common. You'd only lose about 1% fuel economy from the viscosity difference between a 5w20 & 5w30, not too bad for most people.

Good choice of M1 EP. Its around half PAO and seems to be solid. Their Annual Protection AP is probably better still.

With that highway driving, even with a GDI engine, 10k miles would be easy for M1 EP or AP. I would put on an oil filter that performs at least as good as 99% 20 microns 4548-12 for those long drain periods, and that choice is usually Fram Ultra at walmart or amazon.



The last time I researched this, a very long time ago Fram was considered the worst filter you could buy.

Has this changed? I think we're talking 10+ years ago. shocked2

Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5022010 02/24/19 11:03 AM
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VW 508 smile


2019 VW Jetta S 6MT OCI#1 5885mi-Castrol Edge Prof? VW508+VW Service Filter; '17 Subaru Crosstrek CVT OC#7 52665mi-Castrol GTX Magnatec 5W20 + SOA Filter
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5022020 02/24/19 11:09 AM
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Danno Offline
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I have the 1.6L GDI in our 2015 KIA Rio. Small sump at 3.8 quarts. And it puts out a decent amount of power at that displacement.
I change the oil at 3750 miles as per KIA Canada requirements.
If I had your KIA, I would use a good conventional such as PYB or QSGB. 5W-30 and change it at 5,000 mile interval, with an OEM oil filter.
GDI seems to beat up oil quicker than port injected engines.


2019 Jeep Grand Cherokee Summit 5.7L Hemi
2019 RAV4 Limited Hybrid
2016 Sorento SX V6 AWD
2010 Mazda 3 2.0L
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5022021 02/24/19 11:10 AM
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Langanobob Offline
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Originally Posted by ChrisJ


The last time I researched this, a very long time ago Fram was considered the worst filter you could buy.

Has this changed? I think we're talking 10+ years ago. shocked2

I’m with you, Fram had a terrible reputation. Not sure what happened, I suspect a change in corporate ownership, now the Fram Ultra filters are supposed to be very good.

Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5022030 02/24/19 11:26 AM
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Triple_Se7en Offline
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Originally Posted by ChrisJ
I know this has probably been posted 10,000+ times in the past month but I couldn't find anything exact to my situation so I wanted to ask.

I've been using 5w30 Mobil 1 extended performance in pretty much everything I own for years. My last two engines were 2012 GM 1.4 turbos and I ran them for 10,000 miles and even at 142,000 miles my last engine looked like brand new when I pulled the cam cover. I still have a Cruze that has 80K on it, but I traded my Sonic in.


I just bought a new 2019 Hyundai GDI 1.6 and noticed it calls for 5w20 on the cap, but the manual claims I can use all kinds of stuff. I think it calls for changes every 7500.

99.99% of my driving is 40 mile trips on interstates to and from work at 60-75mph. Very few short trips so I don't think moisture has ever been an issue for me.

Should I continue using Mobil 1 extended performance 5w30 in this engine which is the same as my other car (GM 1.4T) and my lawn mower, snow blower, generators etc. Or buy a specific oil for it? With my driving habits do I need to do it every 7500 or can I squeeze 10K out of it like my previous engines?

I've never owned a GDI engine before but have heard rumor that they can be finicky. This being the case, I will go out of my way if it matters.


I wouldn't go over 7.5k OCIs with your GDI. Run 5W30 synthetic and regular Mobil-1 is plenty good. Other good choices are Castrol Magnatec or black Edge, Pennzoil Platinum and QS Ultimate Durability.

PAO, which is high in Mobil-1 EP, is not so favorable with your GDI, according to TGDI/GDI/LSPI researchers. Tests have shown even Group-2 conventional may be a better option. So choosing a Group III, like those I mentioned above, may be our ticket. That's what I'll run in my Hyundai Santa Fe 2.4 GDI. I already have two jugs of Pennzoil Platinum ready for service for the next 12 months or-so. That Platinum currently has a $10 rebate per five quart jug. Limit 2. So I couldn;t pass up that nice offer.

I am going with Group III synthetic, because it supposedly soaks up fuel dilution better than conventional. Otherwise I would just buy Pennzoil Yellow Bottle and run that for 5K OCIs, which will be my mileage for OCIs with that Hyundai. Still undecided on what filter. It'll likely be either OEM, Wix, or Fram EG. A filter with more flow is preferred by Hyundai and more flow is displayed with their OEM filter, which is around $5 at a dealer.

Last edited by Triple_Se7en; 02/24/19 11:32 AM.

19 Hyundai SantaFe 2.4GDI Castrol Edge 5w30 / NAPA Mann-Hummel filter / 6oz Liqui-Moly Treatment
04 Colorado 3.5 Castrol Edge 0W40 Euro & K&N filter
03 Malibu 3.1 QS / Valv Syn 5w30 mix Fram EG filter
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: Danno] #5022034 02/24/19 11:28 AM
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ChrisJ Offline OP
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Originally Posted by Danno
I have the 1.6L GDI in our 2015 KIA Rio. Small sump at 3.8 quarts. And it puts out a decent amount of power at that displacement.
I change the oil at 3750 miles as per KIA Canada requirements.
If I had your KIA, I would use a good conventional such as PYB or QSGB. 5W-30 and change it at 5,000 mile interval, with an OEM oil filter.
GDI seems to beat up oil quicker than port injected engines.



Hi Danno,

Thank you for taking the time to respond.

If the engine seems to beat up oil faster, why recommend a conventional oil?

Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: Triple_Se7en] #5022039 02/24/19 11:34 AM
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ChrisJ Offline OP
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Originally Posted by Triple_Se7en
Originally Posted by ChrisJ
I know this has probably been posted 10,000+ times in the past month but I couldn't find anything exact to my situation so I wanted to ask.

I've been using 5w30 Mobil 1 extended performance in pretty much everything I own for years. My last two engines were 2012 GM 1.4 turbos and I ran them for 10,000 miles and even at 142,000 miles my last engine looked like brand new when I pulled the cam cover. I still have a Cruze that has 80K on it, but I traded my Sonic in.


I just bought a new 2019 Hyundai GDI 1.6 and noticed it calls for 5w20 on the cap, but the manual claims I can use all kinds of stuff. I think it calls for changes every 7500.

99.99% of my driving is 40 mile trips on interstates to and from work at 60-75mph. Very few short trips so I don't think moisture has ever been an issue for me.

Should I continue using Mobil 1 extended performance 5w30 in this engine which is the same as my other car (GM 1.4T) and my lawn mower, snow blower, generators etc. Or buy a specific oil for it? With my driving habits do I need to do it every 7500 or can I squeeze 10K out of it like my previous engines?

I've never owned a GDI engine before but have heard rumor that they can be finicky. This being the case, I will go out of my way if it matters.


I wouldn't go over 7.5k OCIs with your GDI. Run 5W30 synthetic and regular Mobil-1 is plenty good. Other good choices are Castrol Magnatec or black Edge, Pennzoil Platinum and QS Ultimate Durability.

PAO, which is high in Mobil-1 EP, is not so favorable with your GDI, according to TGDI/GDI/LSPI researchers. Tests have shown even Group-2 conventional may be a better option. So choosing a Group III, like those I mentioned above, may be our ticket. That's what I'll run in my Hyundai Santa Fe 2.4 GDI. I already have two jugs of Pennzoil Platinum ready for service for the next 12 months or-so. That Platinum currently has a $10 rebate per five quart jug. Limit 2. So I couldn;t pass up that nice offer.

I am going with Group III synthetic, because it supposedly soaks up fuel dilution better than conventional. Otherwise I would just buy Pennzoil Yellow Bottle and run that for 5K OCIs, which will be my mileage for OCIs with that Hyundai. Still undecided on what filter. It'll likely be either OEM, Wix, or Fram EG. A filter with more flow is preferred by Hyundai and more flow is displayed with their OEM filter, which is around $5 at a dealer.



What is M1? Group 4?

Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5022046 02/24/19 11:37 AM
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I’m a thick oil fan personally I’d go with a 5w30 or even a 10w30 if the weather permits it


2006 F350 DRW 6.0 PSD with a ZF6 6Speed. If you can't find it or float it then just grind it
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5022048 02/24/19 11:38 AM
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Chris142 Offline
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Originally Posted by ChrisJ
Originally Posted by oil_film_movies
You could stick with 5w30, to keep your stock in common. You'd only lose about 1% fuel economy from the viscosity difference between a 5w20 & 5w30, not too bad for most people.

Good choice of M1 EP. Its around half PAO and seems to be solid. Their Annual Protection AP is probably better still.

With that highway driving, even with a GDI engine, 10k miles would be easy for M1 EP or AP. I would put on an oil filter that performs at least as good as 99% 20 microns 4548-12 for those long drain periods, and that choice is usually Fram Ultra at walmart or amazon.



The last time I researched this, a very long time ago Fram was considered the worst filter you could buy.

Has this changed? I think we're talking 10+ years ago. shocked2

A lot of the frame hype comes from the fiber end caps they use on their cheaper filters.in reality there is nothing wrong with those end caps. The cheaper fram filters are often a little lacking in element but they still have plenty. If your plugging up a filter you have bigger problems than the filter brand.

Purolater filters have been tearing which let's unfiltered oil bypass the filter. The cheapest frams don't tear.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: ChrisJ] #5022049 02/24/19 11:40 AM
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There are like six different M-1s. Which one are you referring to?
I am only familiar with 2..... EP and regular Mobil-1. If you need to know PAO quatitires, with the others, someone else may help here.


19 Hyundai SantaFe 2.4GDI Castrol Edge 5w30 / NAPA Mann-Hummel filter / 6oz Liqui-Moly Treatment
04 Colorado 3.5 Castrol Edge 0W40 Euro & K&N filter
03 Malibu 3.1 QS / Valv Syn 5w30 mix Fram EG filter
Re: Hyundia / Kia GDI 1.6 oil thoughts [Re: Triple_Se7en] #5022056 02/24/19 11:50 AM
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ChrisJ Offline OP
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Originally Posted by Triple_Se7en
There are like six different M-1s. Which one are you referring to?
I am only familiar with 2..... EP and regular Mobil-1. If you need to know PAO quatitires, with the others, someone else may help here.



I'm sorry.
I've only used EP, though the wife accidently thought EP high mileage a few times.

Not sure if there's much of a difference between the two.

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