Never tried M1 0W40 or QS Euro 5W40 (yet) in my 2017 Hyundai 2.4L GDI engine . Max OCI was 5K miles / 6 months , now Iām in that 3.5K to 4K mile / 6 month OCI range with M1 5W30 EP or Valvoline Advanced 5W30 and high efficiency oil filter (Fram Ultra) . Top Tier Shell or Chevron regular grade seems to run fine in the 2.4L GDI (although premium grade seems to offer better power / response) .
I've used both. It's the M-1 that works better inside those Hyunkia four cylinder engines. I'm getting a sewing machine sound using Amsoil currently in the cold weather . When I used the QS 40w prior in 80-90 degree weather, my engine sounded like an old Royal manual typewriter journalist pounding on the typewriter keys.
Lordy-Lordy What would that Kia sounded like, had I reversed the application and used the QS in the winter?.... shaking a shoe box full of marbles? Sorry, I reminded myself why I quit using QS in 2004. So I tried it again in 2023 and will wait another 20 years to try it again.
Wait -never mind. I'll either be in my 90s and senile then, or I'll be driving a hydrogen-powered vehicle. I follow member Accent Abuser. I do believe / recall that he quit using QS also, immediately following the end of his vehicle warranty at 100k.
Our Hyunkia engines prefer Mobil-1 over QS. They like the Valvoline you used many times prior. I quit Valvoline for political reasons. But if you are OK with their new ownership, I suggest you move back to Valvoline, or go to Mobil-1.
Just my opinion and how different oils fare with my Hyunkia products. If your engine(s) need 40w, they will let you know. Doing a trial run is always a good idea. Accent Abuser is a smart Accent oil shopper. He has the opportunity to abuse, but doesn't really.
they didnāt learn to avoid these Korean pieces of broken turds after the very FIRST engine failure???
