[328iX]

Originally Posted by Zanity

I'm busy at the moment, this is all im going to say right now, my local area reaches over 33 degrees C outside in the summer, and only drops to -10 C in the coldest winter, so tell me how the lower viscosity 5W30 is better than 5W40 for my car? Heres a basic chart i quickly pulled, note the operating ambient temperature range but seriously, google and do some learning.

I quote:" 5W40 is a motor oil that penetrates to the active mechanisms faster, and provides excellent lubrication on start up. The number "40" implies that it differentiates from the most common motor oil (30) among the cars, as it is denser, and this ensures more profound engine lubrication during hot temperatures."

You're arguing with yourself, there's nothing you can tell me about oils/lubricants that I don't know.


I'll quote my original message

Going from 0w-40 to 5w-40 is nothing drastic and completely safe in a hot climate, but would not advise in a cold climate.

Also your own chart proves my exact point, it literally says it's "thicker" and has "less flow" do you know what that means on an engine with tight tolerances? I'll let you think for yourself.

[Zanity]

Originally Posted by 328dX

You're arguing with yourself, there's nothing you can tell me about oils/lubricants that I don't know.


I'll quote my original message


Also your own chart proves my exact point, it literally says it's "thicker" and has "less flow" do you know what that means on an engine with tight tolerances? I'll let you think for yourself.

I'm not arguing with you, I'm simply denying your credibility, you still haven't answered my question, because you can't.

How is the lower viscosity 5W30 better than 5W40 for my car in my local climate condition of -10°C to 33°C?

Please stop beating the bush and answer this Mr. Oil Expert. With all due respect.

[Supremegee]

Originally Posted by zanity

i'm busy at the moment, this is all im going to say right now, my local area reaches over 33 degrees c outside in the summer, and only drops to -10 c in the coldest winter, so tell me how the lower viscosity 5w30 is better than 5w40 for my car? Heres a basic chart i quickly pulled, note the operating ambient temperature range but seriously, google and do some learning.

I quote:" 5w40 is a motor oil that penetrates to the active mechanisms faster, and provides excellent lubrication on start up. The number "40" implies that it differentiates from the most common motor oil (30) among the cars, as it is denser, and this ensures more profound engine lubrication during hot temperatures."

Originally Posted by zanity

i'm busy at the moment, this is all im going to say right now, my local area reaches over 33 degrees c outside in the summer, and only drops to -10 c in the coldest winter, so tell me how the lower viscosity 5w30 is better than 5w40 for my car? Heres a basic chart i quickly pulled, note the operating ambient temperature range but seriously, google and do some learning.

I quote:" 5w40 is a motor oil that penetrates to the active mechanisms faster, and provides excellent lubrication on start up. The number "40" implies that it differentiates from the most common motor oil (30) among the cars, as it is denser, and this ensures more profound engine lubrication during hot temperatures."

👌🏻👌🏻👌🏻👌🏻👌🏻

[328iX]

Originally Posted by Zanity

Please stop beating the bush and answer this Mr. Oil Expert. With all due respect.

I'll answer your question when you quote me saying I said it's bad.



and yes, I am in expert in oil.

"differencebetween.net" looks like a childs site to compare things, the things they say and what you quote is actually quite hysterical

[IraHayes]

Originally Posted by 328dX

You're arguing with yourself, there's nothing you can tell me about oils/lubricants that I don't know.


I'll quote my original message


Also your own chart proves my exact point, it literally says it's "thicker" and has "less flow" do you know what that means on an engine with tight tolerances? I'll let you think for yourself.

I’m not sure I’m understanding what you’re saying either. A 0w-30 and 0w-40 will flow the same at cold temps/startup temps. At operating temp the latter will flow thicker than the former. The thicker oil will protect better at higher temps and in extreme driving conditions. There is a reason why F1 use 50, 60, and 70 weight oils. Easier flow doesn’t necessarily mean better protection. F1 engines, for example, spin at 17 or 18,000 RPMs. A 30 weight oil is not going to do as well as a 40 weight under those conditions. Hell, even a 40 wouldn’t do.

The thicker oil is going to have greater temperature and shear resistance than the thinner one. If this is what you were already saying, sorry, maybe I’m just not understanding you correctly.

[328iX]

Originally Posted by IraHayes

I’m not sure I’m understanding what you’re saying either. A 0w-30 and 0w-40 will flow the same at cold temps/startup temps. At operating temp the latter will flow thicker than the former. The thicker oil will protect better at higher temps and in extreme driving conditions. There is a reason why F1 use 50, 60, and 70 weight oils. Easier flow doesn’t necessarily mean better protection. F1 engines, for example, spin at 17 or 18,000 RPMs. A 30 weight oil is not going to do as well as a 40 weight under those conditions. Hell, even a 40 wouldn’t do.

The thicker oil is going to have have greater temperature and shear resistance than the thinner one. If this is what you were already saying, sorry, maybe I’m just not understanding you correctly.

Yup. I agree with everything you're saying. Which is what he's assuming I disagree with. But in reality, have never said.

[CajunBMW]

In my 2018 B58, bmw recommends 0w-20. Since it is under warranty, that is what my dealer puts in.

[IraHayes]

I think you guys should just chalk it up to a misunderstanding.

[Zanity]

Originally Posted by 328dX

I'll answer your question when you quote me saying I said it's bad.

There's only 2 pages to this thread so I'm not going to quote you again. You're the one saying I don't know my oil, and thicker viscosity will not protect my engine more. When I challenge you with a question on this fact, you refuse to answer because you know you're wrong. If you're really are an oil expert, you're not a very good one at explaining it. I've been a senior engineer for 16 years, and I butcher people who do not explain things clearly all the time.

[328iX]

Originally Posted by Zanity

There's only 2 pages to this thread so I'm not going to quote you again. You're the one saying I don't know my oil, and thicker viscosity will not protect my engine more. When I challenge you with a question on this fact, you refuse to answer because you know you're wrong. If you really are an oil expert, you're not a very good one at explaining things properly. I've been an senior engineer for 16 years, and I butcher people who do not explain things clearly all the time.

Exactly. You can't quote me because I didn't say it; you're asking me to explain something I haven't stated.

I stand by my statement that thicker oil doesn't not = more protection.

There's tons of variables. In your case, and your temperature environments, stepping up to 5w-40 doesn't matter a bit.

But once again, keep arguing with yourself, pretty sad a "senior engineer" cannot understand the physics of trying to pump a thick oil through a tight clearance.


You do realize most engine wear occurs on startup?

[Zanity]

Originally Posted by 328dX

Exactly. You can't quote me because I didn't say it; you're asking me to explain something I haven't stated.

I stand by my statement that thicker oil doesn't not = more protection.

There's tons of variables. In your case, and your temperature environments, stepping up to 5w-40 doesn't matter a bit.

But once again, keep arguing with yourself, pretty sad a "senior engineer" cannot understand the physics of trying to pump a thick oil through a tight clearance.


You do realize most engine wear occurs on startup?

I never disagreed on clearance, and anybody knows most wear is at startup, did I say it doesn't ? 5W40 and 5W30 won't have difference in start up wear either, yet facts are 5W40 will operate better above 30°C ambient temperature with less chance of addictive break down. I'm not arguing with myself, I'm arguing with a fool full of hot air ego. We'll let other people read through the whole thing and decide for them self who is the tool. You're not expert, all you've done is dodge my questions and talk about unrelated irrelevant things like using thicker oil than the recommended viscosity and engine wear at start up, which even a basic mechanic knows.

[328iX]

Originally Posted by Zanity

I never disagreed on clearance, and anybody knows most wear is at startup, did I say it doesn't ? 5W40 and 5W30 won't have difference in start up wear either. I'm not arguing with myself, I'm arguing with a fool full of hot air ego. We'll let other people read through the whole thing and decide for them self who is the tool.

I'm still not sure what you're talking about. Once again arguing about something I never said and agreed with other ppl commenting on here. Goodnight

[nickf30]

Castrol European Formula 0w-40 (LL-01 / Made in Belgium): great value / work very well on track.

[Supremegee]

I order this https://www.fcpeuro.com/products/bmw...427566327kt-lm

[MONSTAR]

Motul 8100 X-cess 5w40.

[IraHayes]

I've used Pennzoil 5w-40 Platinum Euro. I had it sent out for an oil analysis that I have posted here (https://f30.bimmerpost.com/forums/sh....php?t=1621898). I would say the results were excellent. Right now I'm running Liqui Moly Molygen 5w-40. I will send that out for analysis next. I'm planning to try out Amsoil Signature series next. Project Farm recently did a test of many different oils (in 5w-30). Amsoil beat everyone, with Pennzoil Ultra coming in second. I was actually surprised. I always thought Amsoil was a lot of hype.

[amw896]

Originally Posted by Zanity

I switch from Liqui Moly to this, Pennzoil is the actual BMW factory OEM oil, I use 5W-40, because more viscosity = less engine wear, at the cost of a bit of mpg, which I'm ok with.

these two are amongst the best choices. Especially if you are tuned.

[LiquidBlue_F30]

Originally Posted by Supremegee

I'm FBO with stage 2 tune bootmod3 f30 335i
And I wanted to know what would be the best oil to run, currently running 5w30 liquid moly any comments would be appreciated

I use Liqui Moly Special Tec LL 5W-30. It meets the BMW LL-01 specification that is required for these engines. I do a lot of highway driving and have noticed an improvement in gas mileage.

[LiquidBlue_F30]

Originally Posted by Supremegee

I order this https://www.fcpeuro.com/products/bmw...427566327kt-lm

+1

[Supremegee]

Originally Posted by LiquidBlue_F30

I use Liqui Moly Special Tec LL 5W-30. It meets the BMW LL-01 specification that is required for these engines. I do a lot of highway driving and have noticed an improvement in gas mileage.

Originally Posted by LiquidBlue_F30

I use Liqui Moly Special Tec LL 5W-30. It meets the BMW LL-01 specification that is required for these engines. I do a lot of highway driving and have noticed an improvement in gas mileage.

Yea 👌

[ivansureda19]

I have a 335i f30 2015 and I would like to know what kind of oil they recommend me considering that I have bootmod3 stage 2

[F32Fleet]

Originally Posted by ivansureda19

I have a 335i f30 2015 and I would like to know what kind of oil they recommend me considering that I have bootmod3 stage 2

Any LL01/LL01FE. It's all the same. Your tune doesn't matter as there are plenty of BMW engines running more power and/or torque.

LL01 oils run as "heavy" 30's or "light" 40's. Both have a HTHS of 3.5 or more.