what happens if you put 10w30 oil in a car that needs 5w30?
My friend saw my oil light on so he put oil in my car for me but he bought 10w30 and my car needs 5w30.
Your oil is a little thicker when cold. No damage will happen.
Everything you ever wanted to know about oil and lots more --- http://www.bobistheoilguy.com/motor-oil-101/
It will mix.
it will be fine.. i've used 10w30 a lot.
The 5W and 10W defines how the oil will flow at 0 degrees. At operating temperature, there will be a completely insignificant difference between the two.
Looking for a Used Monte Carlo in your area?
CarGurus has 1,673 nationwide Monte Carlo listings starting at $2,990.
Search Chevrolet Monte Carlo Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chevrolet Monte Carlo Experts