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#4679455 - 02/27/18 08:05 AM gdi and conventional oil
ernied Offline


Registered: 05/02/07
Posts: 353
Loc: ogdensburg new york
do all gdi engines require synthetic oils?
I use mobil 1 5/20 in both my 2.4 motors but am thinking of changing
to conventional because the oil change reminder will say
change at 5000 miles or six months
and I only have about 2000 on the vehicles seems like a waste of oil
I don" mind spending the money for syn but don't like to waste it either.
at times I use synpower too.
_________________________
2015 Hyundai sonata.
2015 Hyundai santafe sport

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#4679461 - 02/27/18 08:24 AM Re: gdi and conventional oil [Re: ernied]
supton Offline


Registered: 11/09/08
Posts: 11948
Loc: NH
Do you "have" to observe the light? How hard is it to reset it?

I mean, I ignore the TPMS light in my cars on a regular basis (have done so too with CEL's even). If I know better...

Are you motors "known" for oil dilution?
_________________________
2011 Toyota Camry, base, 2.5L/6MT, 162k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 143k, ours
1999 Toyota Camry LE, 2.2L/4AT, 183k, his

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#4679467 - 02/27/18 08:31 AM Re: gdi and conventional oil [Re: ernied]
Spector Offline


Registered: 06/10/02
Posts: 3461
Loc: Chattanooga, TN
Also, and primarily, what does your owner's manual state as to the OCIs? That is the bible when it comes to warranty issues. Your dealer may have programmed the indicator for a shorter interval to get you in the shop more often and that can be changed. So, what does your manual state?

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#4679470 - 02/27/18 08:34 AM Re: gdi and conventional oil [Re: ernied]
wemay Offline


Registered: 04/04/12
Posts: 8865
Loc: Southeast Florida
You can set the reminder to 12 months/7500 miles (easy to do using multifunction menu). That's what's in your Owners Manual as normal service. To answer your question more directly, the manual recommends using SM/GF-4 "or above". I think you're fine using conventional oil for 4-5k mile changes.

Just one consideration- Castrol GTX Ultraclean is a syn blend (as are other conventional oils), and it's GTX 10W30 comes with a 10% Noack.

Great taste in vehicles btw wink
_________________________
2017 Hyundai Sonata Sport 2.4L
2013 Hyundai Santa Fe Sport 2.0T

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#4679475 - 02/27/18 08:42 AM Re: gdi and conventional oil [Re: ernied]
knerml Offline


Registered: 04/05/05
Posts: 479
Loc: NE Ohio
The dealer set the reminder to 5,000mi/6mo.

Very easy to reset yourself, read the manual.

Normal interval for your Hyundais is 7,500mi/12mo. Severe service interval is 3,750mi/6mo. Synthetic is not required.

However, I would recommend using an Hyundai OEM oil filter.

I am using 4,000mi/4mo intervals using Mobil 1 for my GDI, because of potential oil dilution issues.
_________________________
2015 Hyundai Elantra Sport 2.0 GDI Mobil 1 5W20 & OEM/Mann W811/80 Filter
2018 Hyundai Santa Fe Sport 2.0T GDI Castrol Edge 5W40 & OEM/Mann W811/80 Filter

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#4679665 - 02/27/18 12:28 PM Re: gdi and conventional oil [Re: ernied]
CKN Offline


Registered: 10/14/14
Posts: 3693
Loc: Utah
In my 2017 Hyundai Santa Fe XL (6 cylinder) the manual calls for conventional oil. It's a GDI motor.


The dealer gives 3 oil changes with a safety check for $99.00. They use Valvoline.

I'm not crawling under the car for that price.


Edited by CKN (02/27/18 12:30 PM)

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#4679702 - 02/27/18 01:32 PM Re: gdi and conventional oil [Re: ernied]
Nick1994 Online   content


Registered: 02/19/13
Posts: 10102
Loc: Phoenix, AZ
You can set the maintenance reminder to whatever you want in the menu. I use 5w30 in mine since the owner’s manual allows it.
_________________________
2015 Hyundai Sonata 2.4L 79k PU 5w30 & OEM
2000 Toyota Camry 2.2L 228k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k M1 HM 10w40 & Fram Ultra

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#4679724 - 02/27/18 01:51 PM Re: gdi and conventional oil [Re: ernied]
CT8 Offline


Registered: 10/09/14
Posts: 10953
Loc: Idaho
Do the cars require syn type oils?
_________________________
"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf

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#4679728 - 02/27/18 01:57 PM Re: gdi and conventional oil [Re: CT8]
wemay Offline


Registered: 04/04/12
Posts: 8865
Loc: Southeast Florida
Originally Posted By: CT8
Do the cars require syn type oils?


No.
_________________________
2017 Hyundai Sonata Sport 2.4L
2013 Hyundai Santa Fe Sport 2.0T

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#4679750 - 02/27/18 02:23 PM Re: gdi and conventional oil [Re: ernied]
RyanL Offline


Registered: 08/30/17
Posts: 11
Loc: Salt Lake City, UT
I would use synthetic along with potentially going one viscosity grade higher - both of which have lower volatility. Since DI engines don't have the natural cleaning effect that port fuel injection engines do, reducing oil evaporation is important - Therefore reducing the amount of oil sucked up by the PVC and subsequently deposited on the intake valves.

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#4679777 - 02/27/18 02:57 PM Re: gdi and conventional oil [Re: wemay]
MuzzleFlash40 Offline


Registered: 06/20/11
Posts: 1161
Loc: SE Ohio
Originally Posted By: wemay


Great taste in vehicles btw wink


I'll have to agree! lol,

No synthetic is not required, her Santa Fe will be on Dealer provided Cam2 syn-blend until 100k when their oil change club runs out.

My Sonata after this oil change will be on Castrol Syntec since I got it on sale off Amazon for a while. Both 5w30.
_________________________
18 Sonata SEL 2.4-6k
HK Syn 5w30 & OEM
16 Santa Fe Sport AWD 2.4-60k
Cam2 SynBlend 5w30 & OEM
09 Silverado LT 4x4 4.8-100k
Castrol GTX HM 5w30 & Fram




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#4679783 - 02/27/18 03:06 PM Re: gdi and conventional oil [Re: ernied]
JLTD Offline


Registered: 12/15/17
Posts: 653
Loc: US
Synthetic not required and set your interval per a UOA.
_________________________
His: 2015 4Runner SR5 1GR-FE 37k, Amsoil OE 5w20/Wix
Testing vs Amsoil OE 5w30...then longer OCI on SS

Hers: 2008 Jeep Liberty 134k, Amsoil SS 5w30/Amsoil, minimum 10k oci

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#4679963 - 02/27/18 07:45 PM Re: gdi and conventional oil [Re: ernied]
JustinH Offline


Registered: 04/17/04
Posts: 5174
Loc: Texas
I use bargain full synthetic oil and hyundai filters on my sonata.

At 3750 mile intervals smile
_________________________
'11 Hyundai Sonata GLS
'11 Scion XB

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#4680088 - 02/27/18 09:40 PM Re: gdi and conventional oil [Re: ernied]
tig1 Offline


Registered: 01/03/09
Posts: 13657
Loc: Illinois
Originally Posted By: ernied
do all gdi engines require synthetic oils?
I use mobil 1 5/20 in both my 2.4 motors but am thinking of changing
to conventional because the oil change reminder will say
change at 5000 miles or six months
and I only have about 2000 on the vehicles seems like a waste of oil
I don" mind spending the money for syn but don't like to waste it either.
at times I use synpower too.


Ignore the OLM.
_________________________
2007 Ford Fusion 227,000 miles
M1 0-20 EP
2017 Ford Fusion 49K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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