m30 oil question

[Torque]

I've done some reading, but I can't really decide on what oil i should use in my 535i. I've always ran 10w-30 in my m20 525 and it was just fine, however from what I understand, the m30 likes it a little thicker. What should I use? 10w-40? 15w-50?

I'm in KY btw ... summers are generally 85-105 degrees and winters around 0, sometimes dropping to -10 or so.

And is there any benefit or negatives to using "high mileage" oils (as far as dino oils are concerned)?

Thanks all in advance, and sorry for sounding like a novice here, but I genuinelly can't decide what to put in the car.

[winfred]

i like chevron delo 15w40, it's diesel rated oil and has quieted down everything i've put it in, from my much abused 200k e30 to a 10k fresh build with all new parts e30 that belongs to the other mechanic at my shop, both of us ran castroil 20w50 but when i got my truck i had a ready supply of delo on hand and tried it, probably reduced the valve train clatter by 30% (general impression from driving past guard rails with the windows down)

[Torque]

Would there be any sideeffects to using a diesel rated oil in a gas engine? And how does the chevron diesel rated oil compare to regular gas engine 15w40 in your opinion?

thanks again for replying to my thread; i was secretly hoping you would chime in.

[///Sniper535]

I would also like to know more about this. I use 10W40 Castol High Mileage with Restore and besides the noisy valves I'm happy with the performance and reduction of oil consumption.

[winfred]

if you look at the "doughnut" on the lable it's rated for spark ignition engines too, S_ and C_ the 2nd number is the standard, whatever the curent one is, i think they went from I to J on compression ignition for the new ulsd diesel

Would there be any sideeffects to using a diesel rated oil in a gas engine? And how does the chevron diesel rated oil compare to regular gas engine 15w40 in your opinion?

thanks again for replying to my thread; i was secretly hoping you would chime in.

[e34.535i.sport]

I use 10-w40 Castrol Magnatec and i'm really happy with it. Changing it every 3 thousand so i would imagine whatever you choose you'll be fine (i'm no expert however).

I hate to ask a question on someone elses thread (so i hope you don't mind - maybe this will help you)- but i read that the m30 (535i) should take 5.8L of oil, and when i fill mine it takes only 5L. Anyone else had this issue? Seems a bit scary... Even scarier when we changed my friends oil in his e36 320i and it took 7L!

Car runs perfectly, uses no oil/coolant (since hose repair!), and performance is good. Hoping there's not a problem...

Good luck with the oil change.

[Torque]

According to the Bentley, 5.75 liters with filter change.

Don't worry about it ... as long as it's got enough it's fine ... some oil stays in the engine.

[J.DeFeo]

I use 20w-50 in mine, but only because AAP had 50% sale not too long ago and I bought enough to fill a tanker. It's been fine so far and I haven't really noticed any difference between that and the 15w-50 I used before.

How much is supposed to come out? I have a leaky front crank seal and I got just shy of 5 quarts out of it.

[Paul in NZ]

i use either 5 w 30 castrol synthetic(my preference) or 10w 40 Magnatec.Its colder here than kentuckey though

[ILoveMPower]

I run 15-40 in the 535 and the M5, they like it thick!

Just make sure you give it an xtra few to get up to temp before any romping!