[G.Newt]

Originally Posted by AspektUSA

Is the BMW branded Shell 0w-20 really not that good?

It seems like a great option to run in cold temperatures.

The Liqui Moly rep in this video kind of gives away the game, I think:

Oil now is more about just being a fluid to deposit additives on the engine parts, and less about the base oil actually lubricating bits.

It's a fuel economy oil, not a performance oil. Anything 0W-30/40 should be fine in the winter. My car sees low teens/single digit starts quite frequently in the winter and has no problem with Castrol 0W-40.

[AspektUSA]

Originally Posted by G.Newt

It's a fuel economy oil, not a performance oil. Anything 0W-30/40 should be fine in the winter. My car sees low teens/single digit starts quite frequently in the winter and has no problem with Castrol 0W-40.

Sure, it's just that if you watch the video you'll hear the Liqui Moly rep say that oil viscosity isn't as important in newer engines anymore.

Oil is now just a conveyance for additives, detergents, and stabilizers more than anything.

If you're tracking or racing, I can see how a thicker oil would be prudent.

But on a daily driver?

[G.Newt]

Originally Posted by AspektUSA

Sure, it's just that if you watch the video you'll hear the Liqui Moly rep say that oil viscosity isn't as important in newer engines anymore.

Oil is now just a conveyance for additives, detergents, and stabilizers more than anything.

If you're tracking or racing, I can see how a thicker oil would be prudent.

But on a daily driver?

Totally valid argument and it was good to hear someone who works in the field explain things in the video. However, when we introduce the price factor, there is 0 reason to use the thinner, less performance-oriented oil. Most 0W-40 can be had for $25/5 qt or less. 0W-20 oil is generally more expensive.

Call it an insurance for peace of mind and it saves you money, too lol.

[cooolone2]

I'm curious if anyone has run Oil Pressure readings on the B58 with different viscosities. My first oil change Blackstone diagnostic said the break-in oil was 0-20... I put in 5W40 and not worrying about it. If the temp dips to Sub-Zero temps, it's not going anywhere anyway, lol lowest I would run is 0-30 or 5-30 anyways. That 0-20 came out like water and I only had 1k miles on it.

[Atom Ant]

For previous cars I always used to buy Mobil 1 0W40 green bottle and change per 10.000km. Is this B58 engine has any other need or will fit?

[G.Newt]

Originally Posted by Atom Ant

For previous cars I always used to buy Mobil 1 0W40 green bottle and change per 10.000km. Is this B58 engine has any other need or will fit?

Look at your instruction manual. I've also already listed all viable viscosity previously in this thread.

[B58 parts]

It's been rather cold this week. Like 18f and wind it feels super cold. I still have the 5w40 in. Now again today and first last weekend I have a code for the vanos, stuck intake camshaft. It sat outside freezing all day. I ran the vanos test, and it passed all good. It ran fine in limp mode, I cleared codes and it idles smooth and runs great.

So I don't think there's anything actually wrong, but maybe sitting very cold the 5w40 isn't getting enough pressure up there. Which isn't good in any case. Hopefully the weather turns and I can avoid it. Or I will try something lighter. Hopefully that's all it is. I had reservations about running such heavy stuff due to exactly this.

[CloudX]

Just picked up a 2016 340i and noticed they used 0w20. Going to be using LiquiMoly 5w40 though.

[bspeedracerb]

T6 5w40 in every motor i’ve owned this past decade including the B58.

[s55jesus]

I've been using Castrol Edge 5w40 but am going to change to Motul 5w40 for the next oil change. BMW says to use 0w20 for fuel economy reasons but I'd rather have my oil not run like water when it's pushed hard.

[eksigned]

Is there any truth to this statement? "as far as I know, BMW says that LL-04 can be a substitute for LL-01 ONLY when your fuel does NOT contain ethanol."

I found this on BITOG.

[StannisBaratheon]

My concern with Rotella is denial of warranty coverage which is why I use LiquiMoly Leichtlauf High Tech 5w40. The last thing I want is a service advisor denying a turbo replacement or engine replacement from cylinder wall scoring with the excuse of "you used non-certified oil which caused X to fail. We're not covering it."

[G.Newt]

Originally Posted by eksigned

Is there any truth to this statement? "as far as I know, BMW says that LL-04 can be a substitute for LL-01 ONLY when your fuel does NOT contain ethanol."

I found this on BITOG.

Due to the high sulfuric content in US fuels, the diesel oil (LL-04) is not suitable for gasoline engines here. Overseas in Europe where they don't have that issue, LL-04 can be a substitute, yes.

[Creedozz]

I suggest liqui moly. I thinks it is the best ever.

[eksigned]

Originally Posted by G.Newt

Due to the high sulfuric content in US fuels, the diesel oil (LL-04) is not suitable for gasoline engines here. Overseas in Europe where they don't have that issue, LL-04 can be a substitute, yes.

So these guys running T6 Rotella 5W40 diesel for their high zinc/phosphate content........? (And recommending it to other)....are confused? lol

[G.Newt]

Originally Posted by eksigned

So these guys running T6 Rotella 5W40 diesel for their high zinc/phosphate content........? (And recommending it to other)....are confused? lol

Rotella T6 until recently had the API SM certification, which meant it was okay for gas engines. I suspect they just didn't want to bother paying for the cert once it expired. Much like Valvoline's 5W-40 diesel oil is API SN certified.

BMW's LL-04 oils may not/have ever been API Sx certified (S for gasoline engines, C for diesel engines).

The technical reason I provided is emissions-related. Running diesel oil has the potential to damage your catalytic converter. How much of a risk? Probably low and why a lot of gas cars run it.

[hokiedood]

How do you find the LL rating for oil? Will it always say on the bottle?

My car is tuned to stage 1. Right now I'm looking at Castrol EDGE 5W-30 and 5W-40. Are both of these rated LL01?

The temperatures here can reach the 40s in the winter. What winter grade should I be using?

[Mr. 340]

Originally Posted by RedBarron

What do you all recommend? I may just run the BMW 0W-30 for a little more weight than the 20.

I use Liqui Moly Molygen 5W-40. I live in a hot climate so it works perfectly for me and so far it has been great. Highly recommend.

[F32Fleet]

Don't run a HDEO like Rotella


See last post:

https://www.bobistheoilguy.com/forum...low-saps-thing

[kern417]

Originally Posted by hokiedood

How do you find the LL rating for oil? Will it always say on the bottle?

My car is tuned to stage 1. Right now I'm looking at Castrol EDGE 5W-30 and 5W-40. Are both of these rated LL01?

The temperatures here can reach the 40s in the winter. What winter grade should I be using?

It's on the back of the bottle. It will list different OEMs (Volkswagen, BMW, etc.) and the rating for those that apply.

[///Madgreek1]

Originally Posted by G.Newt

Rotella T6 until recently had the API SM certification, which meant it was okay for gas engines. I suspect they just didn't want to bother paying for the cert once it expired. Much like Valvoline's 5W-40 diesel oil is API SN certified.

BMW's LL-04 oils may not/have ever been API Sx certified (S for gasoline engines, C for diesel engines).

The technical reason I provided is emissions-related. Running diesel oil has the potential to damage your catalytic converter. How much of a risk? Probably low and why a lot of gas cars run it.

So essentially if we are running catless DPs we can still extol the virtues of ll04 oil without the risk, if I'm understanding correctly. I'm currently running Liqui Moly Top Tec 2330 low ash 5w40. Runs like a dream. Although I believe it carries the API S designation

[G.Newt]

Originally Posted by ///Madgreek1

So essentially if we are running catless DPs we can still extol the virtues of ll04 oil without the risk, if I'm understanding correctly. I'm currently running Liqui Moly Top Tec 2330 low ash 5w40. Runs like a dream. Although I believe it carries the API S designation

Yeah if you're catless, I wouldn't worry about the elevated levels of ZDDP in diesel oils, and especially if it carries an API Sx certification. I have an aftermarket high-flow DP that I'd like to preserve (these things ain't cheap) so 0W-40 Castrol (LL-01) it is for me. We also have a long, cold winter (Oct - April) so I need to stick with a 0W.

If you Google around, you'll see Blackstone lab reports of BMWs running Rotella T6 5W-40 diesel oil. They're almost all good reports.