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I used 5w30 regualar castrol motor oil before my last oil change
but during my last oil change the oil changer put in 10w30 I have this 5qt container that about half full of 5w30 can I use it when my oil is low?
You can use it, the 10w30 is a little thicker oil than the 5w30. If 5w30 is recommended by MFG'er for your vehicle I would ask that they use 5w30 at your next oil change.
I was using the 5w30 because it was recommended at oil change place since I have high mileage but the latest oil change place recommended 10w 30 .
Thanks for your tip I hate to let the oil I have in stock go to waste.
Now Im confuse which is better for high mileage in mild carolina climate
I used 5w30 regualar castrol motor oil before my last oil change
but during my last oil change the oil changer put in 10w30 I have this 5qt container that about half full of 5w30 can I use it when my oil is low?
I was using the 5w30 because it was recommended at oil change place since I have high mileage but the latest oil change place recommended 10w 30 .
Thanks for your tip I hate to let the oil I have in stock go to waste.
Now Im confuse which is better for high mileage in mild carolina climate
As M3 Mitch said, if your car is not burning a lot of oil I would stick with the Castrol 5w30. I do my own oil changes and have been a loyal user of Castrol GTX oil for over 20 years now. I've used it in Florida in the high heat and up north in the cold winters. I sold a chevy pick-up this summer with a V6 engine had 210,000 miles on it and still going strong, I used 5w30 castrol in it.
Yes you can mix it. Try to avoid mixing brands if possible
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