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I know there has been considerable discussion about oil for Hyundai turbos, and being a first-time Hyundai owner, I wanted to make sure I'm doing the right thing for my 2018 Elantra GT Sport. When I took it in for my first (complimentary) change, I asked the Service Adviser if 5W-20, as indicated by the windshield sticker, was put into the car. "Yes, that's the right oil for your car." When I pointed out the oil filler cap and the owner's manual calls for 5W-30, I was told "that's wrong." Having owned four or five cars with turbos, I have never seen one with less than a 30-weight specification. Having always done my own oil changes, I immediately drained the dealer oil and replaced it with 5W-30 Pennzoil Platinum Full Synthetic and a new OEM Hyundai filter. BTW, the Pennzoil was the only readily available one I found that says it meets the ACEA A5/B5 classification.
 

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I'd actually trust the oil filter cap more than Service Advisers because the factory is less likely to be wrong. Does the dealership not allow you to change the oil from 5W-20 to 5W-30?
 

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I'd actually trust the oil filter cap more than Service Advisers because the factory is less likely to be wrong. Does the dealership not allow you to change the oil from 5W-20 to 5W-30?
Service Manager implied that the dealership puts 5W-20 in all Hyundais. I, too, trust manual over dealership personnel.
 

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Maybe you can go to another dealership next time and see what they use. Sounds a bit sketchy, though I do wonder why they don't just go with 5W-30?
 

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That's a great example of mechanics work. Some of them don't even know what they supposed to do, so it's really important to double check what's going on with your car, either by asking another mechanic or do your own research about it.
 

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I usually don't go to the dealership for maintenance after the warranty ends, after that I just go with my trusted garage guy and he has never let me down.
 

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I usually don't go to the dealership for maintenance after the warranty ends, after that I just go with my trusted garage guy and he has never let me down.
Thats the best thing to do which most don't, instead its usually the dealership or some express lube shop that mainly does regular general maintenance. But enjoy it while you can because eventually we might only have the option of going to the dealership, but at the same time cars these days are requiring less and less maintenance.
 
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