Here's some background...then the question.

Took my car in to get an oil change last night (yeah, I'm lazy sometimes). Anyway, on the drive home I notice the engine is running really smooth. The normal exhaust noise is muffled. I'm like, "Wow, this is the smoothest I can remember this engine running!". Start it up this morning and no problems, it did seem to take the littlest bit more effort to turn over. It's a little chilly. Nothing that I really thought twice about though.

I glance up and notice they put the oil reminder sticker on the windshield. I reach up to take it off and notice that it says 10W30 Mobil 1. I always get 5W30.

Is it worth taking it back and having them put the correct oil in it? I mean is it going to make that much of a difference? I certainly never thought that kind of mistake would be noticable to the driver! I'm a little miffed they didn't do what I requested and then missed the numerous labels on the car. But I don't know if it's worth the price of the gas and the time to go back and have it done right.

 

I would but thats me, In winter I run 5w 30 in summer I reun 10w 30 It gets cold in Wis.

 

Unless you really want to be a pain-in-the-***, I wouldn't bother.. I do understand the frustration of not getting what you asked for (you did ask, right?), but the difference between the two is minimal, and even the 10-30 flows much better in the cold than any conventional oil (I use 10-30 Mobile 1 year-round, and I live in Minnesota).. It's your car, and you gotta do what makes you feel good, but since you're using good oil..... and presumably changing it on a regular basis, you won't suffer any ill effects from the minor difference...

 

how many miles are on it? anything over 70,xxx i would run 10w-30 anyway. i live in jersey to and in the winter i mix about and 7-8w/30 and run 10/30 in the summer.

 

It says 5W-30 on the oil cap and other places, then the owners manual shows a diagram of temp vs oil weight. So it always seemed a little confusing to me. 5W-30 all the time for me.