Oil

[RIBEMR26]

I happened to be at Mobil buying butts and I was browsing the oil I have to buy tomorrow for a change. The dude at BMW, based on the climate where I live right now and my driving style said 10w-40, or 15w-50 would be good. They had 5w-30, 0w-40, or 15w-50. My question is, what the hell is 0W-40?? I assume not the same thing but I don't know. Any help, as usual, greatly appreciated fellas.

[Kevin325i]

The Ow means that the winter weight (or cold weight) or viscosity is better than the 10 or 15. So that it flows better when cold. I can't remember what the temp they test it at is.

I'd go with what the mechanic said and go 10w40 if you're an average driver or 15w50 if your car sees quite a bit of "play time" on the road.

Kevin

[CiscoKid]

i use 15w50 and it stays anywhere between 65 and 99 here

[BlantonG13]

Cisco, you know it gets a lot colder than that here during the winters...South Jersey winters are nothing to mess with. Those are more or less summer temps. (its 80 right now where as it was 95 yesterday over here). Where abouts in South Jersey are you?

[El Presidente]

0w40 is good for derest climates, where the is extreme heat in the day and extreme cold at night. 15w50 is a good summer weight. As long as you change it before winter, that should be fine.

[bigred318]

its all about the 10x40!

David

[RIBEMR26]

Autozone didn't even have 10W-40...I went with 15W-50 (changed the oil over the weekend). I'm no mechanic...people were not kidding....sooooo easy, and it felt so good when I was done that I did it myself. A big middle finger to all those yuppy bitches who have never even popped the hood.

[FruityOne]

i run 5-40 lubro moly full synthetic in my car all year round since temps dont change much in so cal...and my car does see quite a bit of "play time" never had any trouble but i would stay away from mobil 1...i managed to beat that oil into a froth once...but it was pretty extreme(i traveled about a 10 mile distance in under 3 minutes and then valves were ticking) but even when i drive that hard with current oil no such problem.

[frank3]

...but it was pretty extreme(i traveled about a 10 mile distance in under 3 minutes and then valves were ticking) but even when i drive that hard with current oil no such problem.

Uh...so how fast were you going? My calculation shows that you're talking over 200mph!

OK...next time I go that fast, I'll stay away from Mobil1 based on your recommendation.

Maybe we should put this in the product reviews section.

[FruityOne]

ya i dont know how i did it either but...my friend witnessed it and i know the time i accomplished it in because i was listening to a track on my cd player and the song started when i got on the freeway and it was just ending when i got off

if your familiar with so cal think san gabriel to china town(downtown l.a.)