BMW M3 Forum
BMW M3 Forum BMW M3 Gallery BMW M3 Reviews BMW M3 Social Groups BMW M3 Chat M3Forum Sponsors >>
Loading


Mobile M3forum
Go Back   BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X) > BMW M3 Discussions > E46 M3 (2001-2006)
Tire Rack Buy Winter Tires Now!
Not a member? Register Now!
Register Gallery All Albums Garage Search Today's Posts Mark Forums Read Calendar FAQ

E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


Reply
 
Thread Tools Display Modes
Old Thu, Jan-11-2018, 03:38:52 PM   #1
TheDoogan
Forward Loaded
 
TheDoogan's Avatar
 
Join Date: Feb 2017
Posts: 694
In the garage:
Reputation: 0 TheDoogan is on a distinguished road

United States




Default Mitigating Cold Start Wear

Hey guys,

Are there any strategies to mitigating cold start wear? I'll admit that I'm a little confused about why it's so destructive; isn't the crank shaft completely submerged in the oil reservoir at all times, but especially deeply when the engine is turned off?

I'm having new rod bearings installed right now, as well as a cam shaft, rockers etc - WHAT oil should I use from here on out?

My car was owned by two people previously; a woman who owned it until 33k miles (CarFax shows zero recorded dealer services), after that, it had regular oil changes by a friend of mine until I bought it at 52k.

I'm not sure what the existing bearings look like; they haven't removed them yet. But I'd love any tips you guys have. I want to take very good care of the engine now, and only make INTENTIONAL withdrawals.

Thanks!

Dr. DGN
PhD, honorary doctorate from the University of Hard Knocks
__________________
..........

2006 E46 M3, 6MT, Convertible, Black/Black - 72k miles
60k mile Service II, Evolve CSL Intake w/Alpha-N tune, Schrick CSL Cam, Active Autowerke Catless Headers, Section 1 High-flow cats & Section 3.
Jump to top TheDoogan is offline   Reply With Quote
Sponsored Links
Register now and remove these ads
Old Thu, Jan-11-2018, 04:16:54 PM   #2
skylinekin
Registered User
 
skylinekin's Avatar
 
Join Date: Mar 2006
Posts: 89
In the garage:
Reputation: 0 skylinekin is on a distinguished road
Location: Ann Arbor

United States




Default Re: Mitigating Cold Start Wear

Quote:
Originally Posted by TheDoogan View Post
Hey guys,

Are there any strategies to mitigating cold start wear? I'll admit that I'm a little confused about why it's so destructive; isn't the crank shaft completely submerged in the oil reservoir at all times, but especially deeply when the engine is turned off?

I'm having new rod bearings installed right now, as well as a cam shaft, rockers etc - WHAT oil should I use from here on out?

My car was owned by two people previously; a woman who owned it until 33k miles (CarFax shows zero recorded dealer services), after that, it had regular oil changes by a friend of mine until I bought it at 52k.

I'm not sure what the existing bearings look like; they haven't removed them yet. But I'd love any tips you guys have. I want to take very good care of the engine now, and only make INTENTIONAL withdrawals.

Thanks!

Dr. DGN
PhD, honorary doctorate from the University of Hard Knocks
No, the crankshaft is not submerged in oil. How cold of weather do you use the vehicle in?

Best practice is to start the car and begin driving at a conservative pace until the engine oil is warmed. Idling to warm up the engine or starting and immediately shutting off the car causes unnecessary wear on the engine.

I’m sure someone else will chime in on the technical stuff.
Jump to top skylinekin is offline   Reply With Quote
Old Thu, Jan-11-2018, 04:28:17 PM   #3
icecream
Registered Apples
 
icecream's Avatar
 
Join Date: Aug 2012
Age: 14
Posts: 2,364
In the garage:
Reputation: 0 icecream is on a distinguished road
Location: PNW

United States




Default Re: Mitigating Cold Start Wear

Quote:
Originally Posted by TheDoogan View Post
Hey guys,

Are there any strategies to mitigating cold start wear? I'll admit that I'm a little confused about why it's so destructive; isn't the crank shaft completely submerged in the oil reservoir at all times, but especially deeply when the engine is turned off?

I'm having new rod bearings installed right now, as well as a cam shaft, rockers etc - WHAT oil should I use from here on out?

My car was owned by two people previously; a woman who owned it until 33k miles (CarFax shows zero recorded dealer services), after that, it had regular oil changes by a friend of mine until I bought it at 52k.

I'm not sure what the existing bearings look like; they haven't removed them yet. But I'd love any tips you guys have. I want to take very good care of the engine now, and only make INTENTIONAL withdrawals.

Thanks!

Dr. DGN
PhD, honorary doctorate from the University of Hard Knocks
As he ^ said, it does not sit in oil, it would froth up quickly and be ineffective. I think you're overcomplicating it. Nothing will make the engine last forever and these already last a long time with 10w60 and regular changes. Don't race the motor when cold is about all you can do. If you are in subzero weather, consider a 0w-40. If you want to take it another step further don't rev past 7k but that would be idiotic.
Jump to top icecream is offline   Reply With Quote
Old Thu, Jan-11-2018, 04:33:52 PM   #4
Drewster
Registered User
 
Drewster's Avatar
 
Join Date: Aug 2014
Posts: 2,911
In the garage:
Reputation: 0 Drewster is on a distinguished road

United States




Default Re: Mitigating Cold Start Wear

It's definitely a question of how cold your climate really is (assuming the car isn't garaged).

Otherwise, let it run until the idle is stable, and then baby it until your oil gets close to 210F

If you're driving the thing in sub-zero temps a lot, you may want to change to a different weight for the winter and look into block heaters, etc.
Jump to top Drewster is offline   Reply With Quote
Old Thu, Jan-11-2018, 04:57:27 PM   #5
SliM3
Registered User
 
SliM3's Avatar
 
Join Date: May 2012
Posts: 2,619
In the garage:
Reputation: 0 SliM3 is on a distinguished road
Location: Atlanta

United States




Default Re: Mitigating Cold Start Wear

I plan on picking up an Insta-Lube Engine Pre-Lube Kit. Might be an option for you to consider as well.
Jump to top SliM3 is offline   Reply With Quote
Old Thu, Jan-11-2018, 05:47:23 PM   #6
rovert604
Registered User
 
rovert604's Avatar
 
Join Date: Feb 2014
Age: 39
Posts: 700
Reputation: 0 rovert604 is on a distinguished road
Location: Vancouver, BC

Canada




Default Mitigating Cold Start Wear

Because so many people use Liqui Molyís 10w60, Iíve started using their Ceratec which says its bonding abilities lasts for approx 30K miles. I also just dump their MOS2 in the crankcase in between refreshing Ceratec.

My multiple Blackstone oil analysis have come back with clean results showing little wear so Iím happy about that!
__________________
--Trevor in 604--
Vancouver, BC, Canada

Last edited by rovert604; Thu, Jan-11-2018 at 05:52:15 PM.
Jump to top rovert604 is online now   Reply With Quote
Old Thu, Jan-11-2018, 05:54:07 PM   #7
Obioban
Moderator
 
Obioban's Avatar
 
Join Date: Jul 2003
Posts: 36,019
In the garage:
Reputation: 54 Obioban has a spectacular aura about
Location: SE PA

United States




Default Re: Mitigating Cold Start Wear

Since you're not tracking, you'd like be fine with a 0w-40, which would significantly improve engine cold start wear.

Or you could get an engine block heater and heat your oil between uses.

Or just not worry about it and change the rod bearings as oil analysis dictates, which really isn't that often at all-- your car has been roving the earth for 12 years and if just now having them replaced for the first time. Will you even own it 12 years from now?

I'd skip any/all additives.

The crank is never submerged in oil.
__________________

Current Cars: 2005 IR/IR M3, 2001 LMB/blk M5, 03 530i, 04 M3 wagon, and some boring stuff
Past cars: 04 M3, 96 M3, S50B32 e36 M3 CM race car

Last edited by Obioban; Thu, Jan-11-2018 at 06:20:09 PM.
Jump to top Obioban is offline   Reply With Quote
Old Thu, Jan-11-2018, 06:18:19 PM   #8
Jaap
Registered User
 
Join Date: May 2015
Posts: 147
Reputation: 0 Jaap is on a distinguished road

United States




Default Re: Mitigating Cold Start Wear

Quote:
Originally Posted by TheDoogan View Post
Hey guys,
... why it's so destructive; isn't the crank shaft completely submerged in the oil reservoir at all times, but especially deeply when the engine is turned off?
No the crank shaft hangs above the oil and if it touches the oil anywhere (when overfilled) the forces due to slapping the oil every time would not be good for the engine.

Cold start wear is because:
- Block is cold, some items (like pistons) heat up fast, others slow. This changes the tolerances.
- Oil pressure is high, oil flow is low. Oil may not have reached (and stuck to) all nooks and crannies yet.
Jump to top Jaap is offline   Reply With Quote
Old Thu, Jan-11-2018, 07:26:33 PM   #9
TheDoogan
Forward Loaded
 
TheDoogan's Avatar
 
Join Date: Feb 2017
Posts: 694
In the garage:
Reputation: 0 TheDoogan is on a distinguished road

United States




Default Re: Mitigating Cold Start Wear

Excellent. Okay, good points all around you guys, and crazy enough, I've always pictured the crank being submerged when off/settled, and then the oil level falling just below it as the pump began circulating. It's comical what ideas can form in the head, absent of actual knowledge, I suppose.

Okay; I DO garage my car, and it never sits below about 38 degrees (I keep a small heater barely turned on all winter long), but certainly sometimes it'll get down to 5-10 degrees F when sitting outside a restaurant or my office, if it was a clear day and I drove it.

Ian has a good point about them lasting 12 years, with two fairly inexperienced and ignorant owners (who really get pardons, because they can't be expected to dive so deeply into this stuff, I suppose). You are right: there's a very small chance that I'll own this car in 12 years. Even though I can't imagine what it will look like when I get rid of it. That's a sad thought!

Okay, I'll run the 0 weight for the rest of the winter, and I'll change to the 10w-60 when the weather begins warming up.

Do I surmise correctly that the disadvantage of 0 weight for track use is that it gets too hot?

I'll also look at a block heater; gadgets and OCD-level preparation always sounds exciting.
__________________
..........

2006 E46 M3, 6MT, Convertible, Black/Black - 72k miles
60k mile Service II, Evolve CSL Intake w/Alpha-N tune, Schrick CSL Cam, Active Autowerke Catless Headers, Section 1 High-flow cats & Section 3.
Jump to top TheDoogan is offline   Reply With Quote
Old Thu, Jan-11-2018, 08:39:00 PM   #10
whips333
Registered User
 
whips333's Avatar
 
Join Date: Jun 2009
Posts: 838
In the garage:
Reputation: 0 whips333 is on a distinguished road
Location: New Britain

United States




Default Re: Mitigating Cold Start Wear

Honestly, unless you live in Alaska or somewhere where it's 0-10 degrees F for 2 straight months I'll just stick with the 10w-60. I live in new England and just got my blackstone results back yesterday and everything is normal. The key is your right foot and how patient you are to let your baby warm up before you give her the beans. I usually wait until my needle is close to 210 before I even think about going over 3k. Usually that's about 18-20 mins of driving like a grandma which I don't mind.
Jump to top whips333 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT. The time now is 12:51:54 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
M3Forum.com and M3forum.net is in no way sponsored, endorsed or affiliated by or with BMW NA / BMW AG or any of it's subsidiaries or vendors.
BMW and M3 (E90 M3 | E92 M3 | E93 M3 | E46 M3 | E36 M3 | E30 M3) are registered trademarks of BMW AG.
M3Forum Terms of Service
Copyright ©1999-2017 M3Forum.com
Discussing Mitigating Cold Start Wear in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)