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I know.
But they don't know. So, who cares. Use A5 or higher. Who cares how higher is defined!
5w-30 for Turbo GDI
- Thread starter Propflux01
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But they don't know. So, who cares. Use A5 or higher. Who cares how higher is defined!
D
Deleted member 89374
As a Hyundai "enthusiast", if there even is such a thing, I can honestly tell, just don't. Don't use the dealer bulk oil. I did that once in 2019 in each of our Hyundais because I didn't have time to change it myself and the dealer refused to accept to bring my own oil (new policy). Up to that point I was running Mobil 1 EP 5W-30 in both of our Hyundais. Well, the dealer claimed they put Pennzoil Platinum 5W-30 in our vehicles, which turned out to be QSUD, which in the end, after I managed to walk back in the service department with an advisor turned out to be a barrel of random 5W-20 that they were putting in all vehicles regardless of what they needed. But that's not the worst of it. After a few thousand miles I noticed the oil caps on both vehicles darkening, and then when I drained the oil, on my wife's 2017 SF 3.3L plastic housing there was varnish. Looking inside the valve cover with a camera, there was varnish there as well. Took several oil changes with M1 0W-40 and then Castrol 0W-40 and a bottle of Lubegard Engine Flush to get rid of all of it. I settled on Castrol 0W-40 because it stands up better to fuel dilution than M1 0W-40 in GDI engines.
So here is my recommendation to you:
The best ILSAC GF6-A oil for a turbo engine I know of is Castrol EDGE EP 5W-30. It stands up really well to fuel dilution. Wanna go a bit thicker and with more additives? Castrol EDGE Euro 0W-40, you will love it, it stands up very well to fuel dilution as well.
There are other excellent oils out there as well like PUP, Mobil 1 EP, QSUD, RTG, however, for your application I recommend Castrol. Don't waste your time with a 5W-40 like Castrol EDGE 5W-40, it's a Group III synthetic that's not as good as their 0W-40.
The Castrol EDGE Euro 5W-30 is also a decent choice, however, the oils I mentioned above have updated formulations and additive packages. Throw a bottle of 15oz. Lubegard in there, but don't subtract the quantity from the oil, as the Lubegard oil additive carrier will be evaporated after the oil reaches 212F or above. If you have a fuel pump "tick tick tick", the Lubegard will quiet it down. The fuel pump runs on one of the camshafts, and it's noisy. It made a world of difference in my brother's brand new 2020 Sonata 2.5GDI engine, no more loud fuel pump ticking at idle after adding Lubegard.
I hope this helps.
D
Deleted member 89374
But wait, there is more! Hyundai really went down the "stupid" rabbit hole with their newer vehicles. For example, in their new offerings with the 2.5 and 3.5 TGDI they require you run 0W-30, API SP. The only oil that comes close to fulfilling that requirement and that you can find easily is Mobil 1 AFE 0W-30. Though it's not that great for turbo direct-injected engines that most will run on the cheapest available gasoline and do an oil change when they remember, so fuel dilution will continue to be an issue. Sorry, but Hyundai is not Toyota when it comes to engines.
The 2020 Sonata allows up to 10W-30, with 0W-20 being the default recommendation. Well, Hyundai figured that fuel dilution is still an issue with their new Smartstream engines, so for the 1.6T they increased the oil capacity by half a quart in the manual without any physical changes to the motor, but, they made the only allowable motor oil 0W-20.
I wonder who creates the oil recommendations for North America at Hyundai because it's sure as $h1t not their engineers.
He’s been reported to the bitog police for not having a proper car seat. Gotta keep that baby safeWhere is the car seat for your oil ?????
You slacker absent minded oil father....
edyvw
$50 site donor 2025
Thet is the key! Then, what else they don't know?
can you explain this? How can you put in half a quart oil more without modifications?
I have found what they are describing with Subaru's FB25D direct injection engines as well as with Hyundai's GF4D GAMMA engine. The Subaru engine has a 5 quart oil sump with a 4.4 quart recommended fill, the Hyundai engine has a 4 litre (approx 4.23 quart) sump with a 3.5 recommended fill (plus 0.3 quarts in the oil filter).
I cannot say with certainty but I have a hypothesis that due to the fact that there are know issues with blowby, be it fuel dilution and/or carbon soot, that the extra sump capacity is allowed to accommodate the buildup of the blowby content.
Edit: I remember talk in the thread linked below about how piston ring gaps are increasing in direct injection engines and that is allowing for substantial amounts of blowby. I surmised that this is to decrease emissions by turning the crankcase into a dumpster as others have spoken about.
https://bobistheoilguy.com/forums/threads/ilsac-gf6-chain-wear-test.331413/post-5513786
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edyvw
$50 site donor 2025
BMW increased capacity by 2qt in N63 engines and update oil level sensor to show new capacity. That is it.
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On the theta-ii, they simply replaced the dipstick with new F/L dots and instant increase in oil capacity.
They don't know how to build an engine that doesn't seize and doesn't fuel dilute. Engineering too busy with dipstick R&D.
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edyvw
$50 site donor 2025
WUT?
For anyone who doesn’t know, what @Greasymechtech posted about the oil dipstick on Hyundai Theta II engine is correct.
When the Theta II’s started dropping like flies in winter time, Hyundai did a recall which consisted of a microphone connected to a Samsung tablet, and the microphone was inserted in or near (can’t remember) the dipstick tube. If your engine passed the microphone test, you were awarded a replacement Orange dipstick that increased the oil capacity when filling up to the Full mark.
When the Theta II’s started dropping like flies in winter time, Hyundai did a recall which consisted of a microphone connected to a Samsung tablet, and the microphone was inserted in or near (can’t remember) the dipstick tube. If your engine passed the microphone test, you were awarded a replacement Orange dipstick that increased the oil capacity when filling up to the Full mark.
2018 Hyundai Tucson AWD with the 1.6 always used full synthetic 5W-30 what ever was on sale with Hyundai OEM filter, never had a problem in hot So. California.
when did the mobil 1 AFE 0w30 became an oil that is not that great for TGDI engines?
Mobil 1™ 0W-30 Advanced Fuel Economy
Applications
Mobil 1™ 0W-30 is recommended by ExxonMobil for all types of modern gasoline-powered vehicles, including high-performance turbocharged, supercharged, multi-valve fuel injected engines found in passenger cars, SUVs, light vans and light trucks.• Mobil 1 0W-30 is recommended by ExxonMobil for SAE 0W-30, 5W-30 and 10W-30 applications.
• Mobil 1 0W-30 is recommended by ExxonMobil for extreme cold conditions to help deliver quick starts and fast lubrication.
• Mobil 1 0W-30 is not recommended for 2-Cycle or aviation engines, unless specifically approved by the manufacturer.
Always check your owner's manual for the manufacturer's recommended oil viscosity grade, API service classification and any builder approval.
Specifications and Approvals
| This product has the following approvals: |
| GM Dexos1 Gen2 |
| This product is recommended for use in applications requiring: |
| API CF |
| Ford WSS-M2C946-A |
| GM 4718M |
| GM 6094M |
| FORD WSS-M2C953-A |
| FORD WSS-M2C953-B1 |
| FORD WSS-M2C929-A |
| FORD WSS-M2C963-A1 |
| This product meets or exceeds the requirements of: |
| API SN |
| API SM |
| API SL |
| API SJ |
| ILSAC GF-6A |
| API SN PLUS |
| API SN Resource Conserving |
| API SN PLUS RESOURCE CONSERVING |
| API SP |
| API SP Resource Conserving |
Properties and Specifications
| Property | |
| Grade | SAE 0W-30 |
| Density @ 15.6 C, g/cm3, ASTM D4052 | 0.841 |
| Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 | 11.5 |
| Pour Point, °C, ASTM D97 | -42 |
| Flash Point, Cleveland Open Cup, °C, ASTM D92 | 226 |
D
Deleted member 89374
I actually explained why it's not particularly great for Hyundai TGDI engines, not TGDI engines in general. Just re-read my comment again, please:
D
Deleted member 89374
The FTC should put Cryslet/FCA/Stellantis on notice as well. For almost a decade now they're telling customers in the owner's manual that they need to use SOPUS motor oils otherwise their warranty coverage might be voided. Never mind the overpriced Mopar branded fluids. In some situations, it's so bad that you don't even know which overpriced Mopar fluid to buy, like for the **** BW44-44 transfer. Mine is a 2016 RAM 1500 and I don't even know which fluid to get, and the dealership isn't 100% sure, but I might void my warranty if I get the wrong one. I just got some Amsoil Multi-Vehicle ATF and called it a day. I would love for the FTC to put an end to this Mopar/SOPUS fluids nonsense.
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