i just got finished changin my oil and for some reson i bought 5W-20 insted of the 5W-30, but i didnt realize it until i was done fillin up the car.

my question is will there be any negative effects if i keep it in there for the 3000mile interval or should i go staight to the parts store and change my oil again? thanks in advance, Pat

 

5W-20 is actually better than 5W-30
If you google facts about oil changes and all that stuff you will see that lower the difference between the two number the better the oil is. The only thing you should remember, 20W means it will have less lubrication at higher temperatures. The first number (5W) it's for colder temperatures. Lower the number the lower the temperatures it can survive. The second number means the opposite. The higher the number the more hot temperatures it can keep it's lubricative proporties.

 

am i reading wrong or what? isn't it better to keep its lubricative at higher temps, therefore 5W-30 is better?

i'm confused

 

interesting read i didnt know that

 

Only if you are sure you are going to reach higher temperatures. During summer you could use 10W-40 for example because 40 goes all the way pass 100 degress (I'm not completely sure). The reason they don't make oil 0W-40 is because it becomes less of an lubricant at that point. The smaller the range between the two numbers the better it lubricates.

http://diy.prostreetonline.com/techt...p?articleid=18

 

Hmm, I learn somthing new everyday! lol thanks