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OK to use different Oil Weight in 2021 Kia Sorento?


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I bought a 2021 Kia Sorento EX AWD last year and had my oil changed since I have the first 5 oil changes free.  I noticed on the invoice from the dealership that they put 0W-20 synthetic oil but the oil cap on the engine has 0W-30 written on it.  
I like to do my own oil changes because for some reason I don't trust the dealerships.  I looked for 0W-30 oil and it's hard to come by or it is very expensive.  I live in Southern Louisiana and we don't really have a winter here and it's always HOT, so would it be harmful if I used synthetic 5W-30 instead of 0W-30?  It's more readily available and less expensive.  Is the "30" number more important in my case? 


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3 Answers

Put 0W-30 in, if that's what the owner's manual calls for. Nothing else. Ask yourself, which is more expensive? $20 more for expensive motor oil, or a new engine because the oil was too heavy or too light and prematurely wore out the engine? You can buy most any oil on Amazon and keep a stash. It's most likely cheaper there than anywhere else.


Go to page 8-8 of your manual.  The oil weight does matter, and it depends on which engine you have:

Smartstream G2.5 GDi 5.8 SAE 0W-20, API SN PLUS/SP

Smartstream G2.5 T-GDi 5.8 SAE 0W-30, API SN PLUS/SP

If you have the T-GDi, they put in the wrong oil.


This post was modified 1 month ago 2 times by AutoDIY

Use what's stamped on the oil cap. Especially when it comes to Kia's.

Kia will use any excuse they can find to deny a warranty claim. Follow all instructions to a 't' and keep records and receipts.