What oil (not brand)

[92 mtechnic cabrio]

I'm in southern california.

20w-50, no difference whether it's hot (95f) or cold (65f) or on a rare occasion, freakishly cold (45f)

[lordofthewaters]

Im currently using a 15w50 Mobil1 syn. It seems to be a bit heavy in the cold (early mornings below freezing, not uncommon to see the teens). What do you guys run in the winter and what do you run in the summer? I was thinking a 10w40 would be better, but im a tad worried about developing small leaks.

I run 10w40 Havoline all year round and have yet (knock on wood) to see any oil leaks. Power steering......now that's another story ;)

[CarsSuck]

I'm in southern california.

20w-50, no difference whether it's hot (95f) or cold (65f) or on a rare occasion, freakishly cold (45f)

HAHAHA. 45* is a joke. Thats warm for around here. Im talking 20s being a typical morning start.

[92 mtechnic cabrio]

HAHAHA. 45* is a joke. Thats warm for around here. Im talking 20s being a typical morning start.

I know :D

HAHAHA

[E30 Wagen]

could i use 5-30 in winter?

[RobertK]

Royal Purple is the shit.. I love it.. 15w-40 all the time.

[Axxe]

could i use 5-30 in winter?

I used 5W30 in my M20 last year, big mistake. Burning/losing 1 L of oil every 2,000 kms. 5W50 Castrol Syntec now, haven't lost a drop in 3,000 kms since oil change.

[arsevader]

5W-50 Castrol Syntec.

Incredible stuff, no sacrifices. That said, I still switch to 15W-50 Mobil for summer.

My thoughts exactly

James

[Mystikal]

could i use 5-30 in winter?

Could. Not ideal.

[CarsSuck]

okay well ill do the 5w-50 this weekend along with my clutch master and slave. Should i expect oil leakage/seepage?

[Mystikal]

None.

[SilentRavens]

I just use plain old 10w40 year round. FYI: I live in the "mild" Northwest state of Washington, so that also has an effect upon my oil type choice.

[nefarious7907]

I listened to a few people on here and I just go to the dealership to buy BMW spec Castrol oil I think its 15-50 but my car ran a lot better and stoped leaking, Local shop told me to use 5-20 when I got the car and it leaked like a bitch and ran like crap. Good thing I got a second opinion from people on the forum.

[CarsSuck]

well that stuff is so thin you were probably getting a lot of blow by. BMWs just need heavier weight oil.... I dont know what the guy from your shop was smoking.

[Jordan]

5W-50 Castrol Syntec.

I run the same oil in my 2.8l

Do you have any problems burning it off? I used to think it was bad valve stem seals letting it in but now that I have a brand new head/guides/seals its definately rings. Total seal rings do a less then stellar job with thier oil scrapping job, but my compression is all 200-210.

I think I'm going to switch to 20w-50 this weekend and see if that halts the problem. I've never had an issue burning oil until I swtich to the 5w-50 Syntec.