what happens if you put 10w30 oil in a car that needs 5w30?

Asked by Apr 17, 2013 at 01:00 AM about the 1999 Chevrolet Monte Carlo

Question type: Maintenance & Repair

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.

13 Answers

106,475

Your oil is a little thicker when cold. No damage will happen.

7 people found this helpful.
106,475

Everything you ever wanted to know about oil and lots more --- http://www.bobistheoilguy.com/motor-oil-101/

9 people found this helpful.

It will mix.

3 people found this helpful.
8,465

it will be fine.. i've used 10w30 a lot.

1 people found this helpful.
275

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.

4 people found this helpful.
110

DO YOU RECOMMEND CONTINUE USING 10W30 OR RETURN TO USE 5W30 ON NEXT OIL CHANGE

11 people found this helpful.
8,465

it is just a can right? ..no big deal. just wait till next change.

No I put 3 qurts

8,465

i've used 10w-30 too ..no big deal. it tends to be better when u have put hi miles on the engine.

2 people found this helpful.

I agree with Jason that when you have high miles on your car 10w-30 is better even 10w-40. I live in really hot climate so 10w-40 is not bad on the engine. During the winter though on some cars the 10w-30 will be noticeable on a cold engine, your lifters may sound on start up, happened to me that is why i know haaha. just change to 5w-30 on winter if that happens.

Oh and your engine will be fine don't worry, but again your lifters may make a loud clicking sound for about 2 seconds while the thicker 10w-30 oil goes up through the engine during winter.

i have a 2006 Mercedes-Benz and when I got oil changed they put 5W/30 and they told me I had a slight leak in pan but the last 3 weeks have had to add 5W/30 every week and light is still coming on saying it's low, before I got oil changed it, I had no problems. that's why I am asking maybe it will help to go to the 10W/30 Synthetic am I right. Just worried because it is a Mercedes-Benz I always had older cars and had not problems like this

As far as the Mercedes goes. Mine uses 0w30. AutoZone will tell you 5w30 but if you look on all the Mercedes forums they will tell you 0w30. This comes from people who own these cars not a computer telling a guy at a store. Yours could be different tho. Mines the 2000, MB S500. I always go with what other owners say tho before autozone. So while using 5w30 wouldn't hurt idk about 10w30 that's a bigger jump than 1 to the next.

Your Answer

Monte Carlo

Looking for a Used Monte Carlo in your area?

CarGurus has 937 nationwide Monte Carlo listings starting at $3,900.

ZIP:

Chevrolet Monte Carlo Experts

  • #1
    Js08016
    Reputation
    600
  • #2
    Tom Demyan
    Reputation
    530
  • #3
    John Saffrahn
    Reputation
    490
View All

Related Models For Sale

Used Chevrolet Impala
397 Great Deals out of 25,595 listings starting at $799
Used Chevrolet Camaro
224 Great Deals out of 28,922 listings starting at $3,900
Used Ford Mustang
270 Great Deals out of 37,082 listings starting at $2,150
Used Pontiac Grand Prix
4 Great Deals out of 1,805 listings starting at $2,008
Used Chevrolet Corvette
101 Great Deals out of 15,517 listings starting at $3,900
Used Chevrolet Malibu
480 Great Deals out of 49,315 listings starting at $2,000
Used Buick Regal
82 Great Deals out of 4,088 listings starting at $3,995
Used Chevrolet Silverado 1500
1,781 Great Deals out of 149,285 listings starting at $1,495
Used Chevrolet Tahoe
528 Great Deals out of 36,655 listings starting at $1,375
Used Pontiac Firebird
7 Great Deals out of 674 listings starting at $3,695

Used Cars For Sale

2007 Chevrolet Monte Carlo For Sale
96 listings starting at $3,900
2006 Chevrolet Monte Carlo For Sale
134 listings starting at $3,998

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.