Tried out 5w40

pinaculata · 12-01-2017, 12:36 AM

I’ve been hearing and seeing people run 5w40 and 0w40 in their m3 so I decided to try it out. I went ahead and grabbed some castrol 5w40 and did they switch. Now every time I get around 2500 to 3500 RPM I get a lot more rumble and I feel like the engine is struggling. I have RPI full system so I’m used to the extra rumble but this is different. I’m gonna switch back to my usual castrol 10w60 but I wanted to know your thoughts on this whole 5w40 and 0w40 thing.

bimmerfrk · 12-01-2017, 06:41 AM

Quote:

Originally Posted by pinaculata

I’ve been hearing and seeing people run 5w40 and 0w40 in their m3 so I decided to try it out. I went ahead and grabbed some castrol 5w40 and did they switch. Now every time I get around 2500 to 3500 RPM I get a lot more rumble and I feel like the engine is struggling. I have RPI full system so I’m used to the extra rumble but this is different. I’m gonna switch back to my usual castrol 10w60 but I wanted to know your thoughts on this whole 5w40 and 0w40 thing.

How is it struggling. You are running a lower weight oil......

spazzyfry123 · 12-01-2017, 07:26 AM

The first number represents viscosity during a cold start up and the second number (after the W) represents the viscosity at operating temperature.

So in this case, the 5W40 would be a thinner viscosity for start up than a 10W40, but would have the same viscosity while it is up to temp.

But in the case of 5W40 vs 10W60, 5W40 would have a thinner viscosity across the board.

DSilk · 12-01-2017, 07:40 AM

Stick with the factory recommendations regarding oil viscosity. The people who are griping about the 10W-0 specification live in northern climates with wintertime temperatures dropping below 0 degrees F. While not as warm as Miami, LA doesn't get cold enough in the winter to play these sorts of games.

Ab28 · 12-01-2017, 10:20 AM

Quote:

Originally Posted by DSilk

Stick with the factory recommendations regarding oil viscosity. The people who are griping about the 10W-0 specification live in northern climates with wintertime temperatures dropping below 0 degrees F. While not as warm as Miami, LA doesn't get cold enough in the winter to play these sorts of games.

+1. Couldn't agree more.

Stick to the 10w60.

bimmergixxer · 12-01-2017, 10:44 AM

Stick to the recommended 10-60 since you live in L.A. Some guys like me who live in Canada, run 0-40 only in the winter to help with cold start-up, but it is damn cold here. When reading posts, you need to pay attention where they are living. Cheers

nachob · 12-01-2017, 11:46 AM

Quote:

Originally Posted by lat77

Quote:

Originally Posted by DSilk

Stick with the factory recommendations regarding oil viscosity. The people who are griping about the 10W-0 specification live in northern climates with wintertime temperatures dropping below 0 degrees F. While not as warm as Miami, LA doesn't get cold enough in the winter to play these sorts of games.

+1. Couldn't agree more.

Stick to the 10w60.

Your VANOS is designed to run on 10-60! Stop listening to the bits on here that don't break in cars because they know more than the engineers that made them. The m3 already has a propensity to bearing issues and you go lighter oil? Go back ASAP to a new Shell 10-60 formulation or older Castrol one

doogee · 12-01-2017, 12:04 PM

Quote:

Originally Posted by nachob

Your VANOS is designed to run on 10-60! Stop listening to the bits on here that don't break in cars because they know more than the engineers that made them. The m3 already has a propensity to bearing issues and you go lighter oil? Go back ASAP to a new Shell 10-60 formulation or older Castrol one

Yuuuuup.

Also OP your car clearly has unrelated issues. Oil isn’t going to cause the problems you’re experiencing.

carenthuziast · 12-01-2017, 12:15 PM

Quote:

Originally Posted by pinaculata

I’ve been hearing and seeing people run 5w40 and 0w40 in their m3 so I decided to try it out. I went ahead and grabbed some castrol 5w40 and did they switch. Now every time I get around 2500 to 3500 RPM I get a lot more rumble and I feel like the engine is struggling. I have RPI full system so I’m used to the extra rumble but this is different. I’m gonna switch back to my usual castrol 10w60 but I wanted to know your thoughts on this whole 5w40 and 0w40 thing.

was your 5w40 full synthetic?

burtonsbs5114 · 12-01-2017, 12:16 PM

I live in Green Bay, WI, daily drive my M3 and use 10w60 year round. I have yet to have any issues. :::knock on wood:::

pbonsalb · 12-01-2017, 12:17 PM

So there is insufficient oil pressure with 0W40 to operate the VANOS? I don’t think that is a correct statement. Any support for it?

bimmerfrk · 12-01-2017, 12:51 PM

If you dont run 0-40 yer bearings gonna rip yer block to shreds.

GL op

jaehshim · 12-01-2017, 03:03 PM

jesus...ppl...
you ain't keeping this car for 500 yrs
just follow the factory 10w60 and keep rev-happy driving, s65 is happy at high rev

Flying Ace · 12-01-2017, 03:35 PM

Quote:

Originally Posted by jaehshim

jesus...ppl...
you ain't keeping this car for 500 yrs
just follow the factory 10w60 and keep rev-happy driving, s65 is happy at high rev

Agreed 100%.
Unlike Harbaugh's employment contract, most owners don't have a lifetime contract with their cars.

srmast1 · 12-01-2017, 03:48 PM

OP, if you don't live in a freezing climate, why did you even switch to 5w40? So it warms up quicker?

Scrippy · 12-02-2017, 02:55 AM

Quote:

Originally Posted by jaehshim

jesus...ppl...
you ain't keeping this car for 500 yrs
just follow the factory 10w60 and keep rev-happy driving, s65 is happy at high rev

Lol

UPSROD · 12-02-2017, 10:08 AM

Quote:

Originally Posted by jaehshim

jesus...ppl...
you ain't keeping this car for 500 yrs
just follow the factory 10w60 and keep rev-happy driving, s65 is happy at high rev

There are exceptions...I have a 1981 FXB Harley that I have owned for 29 yrs. Had a 1967 Corvette for 22 yrs, 1953 Chevy PU for 22 yrs, 1965 FLH Harley for 17 yrs, 1998 Chevy Silverado PU for 16 yrs, 1993 Accord EX coupe for 16 yrs.....I intend to keep my 2013 E92 M3 for at least 20yrs! PS...I am using 10-60 oil!

BOOF-M3 · 12-02-2017, 10:37 AM

Quote:

Originally Posted by UPSROD

Quote:

Originally Posted by jaehshim

jesus...ppl...
you ain't keeping this car for 500 yrs
just follow the factory 10w60 and keep rev-happy driving, s65 is happy at high rev

There are exceptions...I have a 1981 FXB Harley that I have owned for 29 yrs. Had a 1967 Corvette for 22 yrs, 1953 Chevy PU for 22 yrs, 1965 FLH Harley for 17 yrs, 1998 Chevy Silverado PU for 16 yrs, 1993 Accord EX coupe for 16 yrs.....I intend to keep my 2013 E92 M3 for at least 20yrs! PS...I am using 10-60 oil!

Forever Rod... Don't let us down.

Thik · 12-02-2017, 04:56 PM

Quote:

Originally Posted by spazzyfry123

The first number represents viscosity during a cold start up and the second number (after the W) represents the viscosity at operating temperature.

So in this case, the 5W40 would be a thinner viscosity for start up than a 10W40, but would have the same viscosity while it is up to temp.

But in the case of 5W40 vs 10W60, 5W40 would have a thinner viscosity across the board.

Why is the winter viscosity of 5 thinner than the viscosity at operating temperature of 40? Isn't oil thicker when it's colder?

M43S7RO · 12-02-2017, 06:51 PM

http://www.upmpg.com/tech_articles/motoroil_viscosity/

Quote:

Originally Posted by Thik

Why is the winter viscosity of 5 thinner than the viscosity at operating temperature of 40? Isn't oil thicker when it's colder?

spazzyfry123 · 12-02-2017, 08:37 PM

Quote:

Originally Posted by Thik

Why is the winter viscosity of 5 thinner than the viscosity at operating temperature of 40? Isn't oil thicker when it's colder?

What he said!

Quote:

Originally Posted by M43S7RO

http://www.upmpg.com/tech_articles/motoroil_viscosity/

12-01-2017, 12:36 AM	#1
pinaculata Private 2 Rep 59 Posts Drives: 2011 e92 M3 ZCP Join Date: Jul 2017 Location: Los Angeles iTrader: (0)	Tried out 5w40 I’ve been hearing and seeing people run 5w40 and 0w40 in their m3 so I decided to try it out. I went ahead and grabbed some castrol 5w40 and did they switch. Now every time I get around 2500 to 3500 RPM I get a lot more rumble and I feel like the engine is struggling. I have RPI full system so I’m used to the extra rumble but this is different. I’m gonna switch back to my usual castrol 10w60 but I wanted to know your thoughts on this whole 5w40 and 0w40 thing.
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12-01-2017, 07:26 AM	#3
spazzyfry123 Lieutenant Colonel 4359 Rep 1,913 Posts Drives: Here and There Join Date: Jul 2013 Location: North Georgia Mountains iTrader: (1) Garage List 97 Toyota Land Cruiser [7.50] 16 Toyota Land Cruiser [10.00] 11 BMW E90 M3 Stripper [10.00]	The first number represents viscosity during a cold start up and the second number (after the W) represents the viscosity at operating temperature. So in this case, the 5W40 would be a thinner viscosity for start up than a 10W40, but would have the same viscosity while it is up to temp. But in the case of 5W40 vs 10W60, 5W40 would have a thinner viscosity across the board.
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12-01-2017, 07:40 AM	#4
DSilk Major 550 Rep 1,148 Posts Drives: 2008 BMW M3 Coupe Join Date: Jun 2015 Location: South Florida iTrader: (0) Garage List 2015 Jaguar XJ [0.00] 2015 Jaguar XF [0.00] 2014 VW GTI [0.00] 2008 BMW M3 Coupe [0.00] 2007 VW Passat 2.0T [0.00]	Stick with the factory recommendations regarding oil viscosity. The people who are griping about the 10W-0 specification live in northern climates with wintertime temperatures dropping below 0 degrees F. While not as warm as Miami, LA doesn't get cold enough in the winter to play these sorts of games.
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12-01-2017, 10:44 AM	#6
bimmergixxer Railside Performance 48 Rep 331 Posts Drives: E92 M3 R8 V10 Q5 Join Date: Nov 2009 Location: Railside Performance iTrader: (8) Garage List 2010 Ducati Streetf ... [7.00] 2017 Q5 [0.00] 2017 BMW R NineT Racer [5.00] 2010 Audi R8 V10 Ma ... [0.00] 2008 M3 [10.00]	Stick to the recommended 10-60 since you live in L.A. Some guys like me who live in Canada, run 0-40 only in the winter to help with cold start-up, but it is damn cold here. When reading posts, you need to pay attention where they are living. Cheers
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12-01-2017, 12:16 PM	#10
burtonsbs5114 Major 368 Rep 1,198 Posts Drives: 2021 F87 M2c. LBB, 6mt Join Date: Nov 2014 Location: Fort Lauderdale, FL iTrader: (0) Garage List 2006 MV Agusta Burt ... [0.00] 2012 Trek Madone 6. ... [0.00] 2008 BMW e93 M3 [0.00]	I live in Green Bay, WI, daily drive my M3 and use 10w60 year round. I have yet to have any issues. :::knock on wood::: __________________ 2021 F87 M2c. Long Beach Blue over black with blue stitching. 6mt, executive package, slick top.
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12-01-2017, 12:17 PM	#11
pbonsalb Lieutenant General 5234 Rep 10,616 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	So there is insufficient oil pressure with 0W40 to operate the VANOS? I don’t think that is a correct statement. Any support for it?
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12-01-2017, 12:51 PM	#12
bimmerfrk Lieutenant 591 Rep 534 Posts Drives: Ferrari Red F83 Join Date: May 2012 Location: Tristate Area iTrader: (0)	If you dont run 0-40 yer bearings gonna rip yer block to shreds. GL op __________________
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12-01-2017, 03:03 PM	#13
jaehshim Major 492 Rep 1,374 Posts Drives: E90 Join Date: Dec 2008 Location: NE iTrader: (3)	jesus...ppl... you ain't keeping this car for 500 yrs just follow the factory 10w60 and keep rev-happy driving, s65 is happy at high rev __________________
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12-01-2017, 03:48 PM	#15
srmast1 Captain 293 Rep 644 Posts Drives: 2018 6mt AW m2 Join Date: Feb 2016 Location: fresno, CA iTrader: (0) Garage List 2008 Audi A4 [0.00] 2019 Acura MDX SH-AWD [0.00] 2011 e90 M3 [0.00]	OP, if you don't live in a freezing climate, why did you even switch to 5w40? So it warms up quicker?
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