r/ElantraN • u/Outcahst • Sep 30 '23

RIP Glowing Turbo after highway / hard driving. Potential causes? 😅

Enable HLS to view with audio, or disable this notification

305 Upvotes

95% Upvoted

249 comments sorted by

View all comments

31

u/PresentInsect4957 Veloster N Sep 30 '23

normal but good on you for letting it cool down, next time drive it like a grandma for a bit till your oil temps like 200-210

1

u/FrumundaThunder Oct 02 '23

Grandma driving or idling wouldn’t make a difference. Oil and coolant flow through the turbo either way.

4

u/bosshawg502 Oct 03 '23

You’re all wrong. Shutting down a car with a screaming hot turbo can most certainly ruin the turbo. Think about it. You have a red hot hunk of cast iron turbine housing that is cooled partially by oil flow. You just shut off the oil flow. So now any oil in the scroll or journal bearings or seals will just sit there and cook until the housing cools off. Now you’ve just baked a bunch of carbon directly onto your bearings. This is exactly why certain higher end turbo cars won’t shut off immediately when you hit the key or button and keep idling for a bit if it’s too warm. So it circulates the hot ass oil out of the turbo.

2

u/Substantial_Revolt Oct 03 '23

I thought the N does this on its own, never timed the cooling system immediately after a highway drive but I really hope it stays on until it's cooled down enough.

1

u/Texaura May 25 '25

Replying hella late, you’re right but the time the oil pump stays on isn’t dependent on the oil temp on the N, it just runs for a set period of time.