0w20 vs 5w20 oil - Kia Forum
 
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post #1 of 4 (permalink) Old 03-21-2019, 07:28 AM Thread Starter
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0w20 vs 5w20 oil

The oil cap on 2018 Niro says to use 0w20 oil. But my Kia dealer uses 5w20 conventional oil. Will this make any difference on the life of the motor? Also, will this make any difference with carbon build up?

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post #2 of 4 (permalink) Old 03-21-2019, 10:51 AM
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Originally Posted by Rob73 View Post
The oil cap on 2018 Niro says to use 0w20 oil. But my Kia dealer uses 5w20 conventional oil. Will this make any difference on the life of the motor? Also, will this make any difference with carbon build up?
Hi,
0W20 is better option for very cold winter because it doesn't get ticker while cold. 5W20 is also a good option for winter and summer. Synthetic oil is superior to conventional in all aspects and last longer. Maybe, you can request synthetic oil change from dealer and pay a bit more if you plan to keep your car for long time.
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post #3 of 4 (permalink) Old 03-21-2019, 01:00 PM
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Read your car's User Manual to see what oil viscosities are acceptable.
Almost all 0w-20 oils are synthetic.
You shouldn't worry about using 5w-20 vs 0w-20 but synth or synth blend would be better choices.
Sometimes oil bottle may say Conventional oil while in fact it's a synth blend.
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post #4 of 4 (permalink) Old 04-03-2019, 05:05 PM
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I would not switch to conventional, I find it hard to believe the dealer would do that. Weight isn't nearly as important, providing you're not too far off. Being in SoCal, weight makes hardly any difference at any weight for us.

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