does it make any real difference if I warm up my BMW before driving in the morning?

[pbonsalb]

You just acknowledged BMW is using an electric car term differently than its common application and definition. BMW’s description is misleading.

There is no regeneration from the braking itself. Rather there is generation from allowing the alternator to couple during deceleration, coasting and braking. Braking is not creating any more electricity in this charging scenario than coasting or decelerating. Under your view, BMW should describe alternator engagement during coasting and deceleration the same way — regenerative coasting and regenerative deceleration.

[cubeten]

I usually just wait until the rpm’s settle to start driving and try to not hammer on the throttle until it’s fully warmed up.

[ero187]

I've heard just as many arguments and proof for either way. I've always just gone with my gut and warmed my cars up. In my head it just makes me feel better that i'm giving time for the oil to get around everywhere it needs to go before shifting and driving off. WHo really knows..🤷

[WVNed]

I am a big believer in doing what the manual for the car says so I use reduced engine power until the cold notification goes out.
If driving it cold would hurt it they would make it so you couldn't.

I do let the idle drop on the M2 but that is a very short period of time.

[zx10guy]

Hate to be a broken record with how BMW Motorrad better handles things such as this.

With my 2022 S1000RR, on cold start, the RPMs are limited I forget what the starting ceiling RPM is. As the engine warms up, the DME for the bike begins to raise the rev limiter until the engine reaches optimal running temperature where you get full red line.

[eugenebmw]

Originally Posted by RockCrusher

My M8 circulates coolant after engine shut down to cool the turbos. But I still will let the engine idle maybe a minute or two if the engine oil temperature/coolant temperature is elevated.

I do this to reduce the wear and tear on the battery which powers the auxiliary electric water pump and radiator fans after the engine is shut off.

My M8 radiator fans can run as long as over 15 mins on a hot day after the engine shut off. I do the same thing as you to reduce the wear and tear on the battery. The replacement of M8 lithium battery cost over $3000. I plug in the battery charger if I know I am not driving the car for longer than few days too

[klemensior]

I always allow the car to warm up after it cooled down during the night. It helps making sure the car is ready to drive flawlessly.

[Efthreeoh]

Originally Posted by ero187

I've heard just as many arguments and proof for either way. I've always just gone with my gut and warmed my cars up. In my head it just makes me feel better that i'm giving time for the oil to get around everywhere it needs to go before shifting and driving off. WHo really knows..🤷

The engineers who write the technical sections of the owner's manual...

[maticCRO]

Originally Posted by zx10guy

Hate to be a broken record with how BMW Motorrad better handles things such as this.

With my 2022 S1000RR, on cold start, the RPMs are limited I forget what the starting ceiling RPM is. As the engine warms up, the DME for the bike begins to raise the rev limiter until the engine reaches optimal running temperature where you get full red line.

And so does my M4, when its cold its limited to 3000 rpm, then to maybe 6000 and then after that it shows red area at 7250rpm max. M3 E46 had this some 20+y ago.
It happens also when Fuel is really low on reserve, you are limited to 3000rpm

[Three Stents]

Originally Posted by Portimao Blue M440ix

. The oil warms up surprisingly fast when you drive it.

Thank you Capt Obvious

[decaf]

Originally Posted by Three Stents

Thank you Capt Obvious

speaking of engine oil warming up...

my father's best friend's daughter lives in Fairbanks. When she moved there a few years ago after getting a job at the university, she brought her old BMW 335i with her. She had an engine oil pan heater installed. It plugs into an outdoor outlet in her driveway and keeps the oil around 70, even in the middle of winter. (although I guess that's a necessity in Alaska?)

[Yobyot]

Most BMWs have a "warm up" indication of some kind in the dash. In my G45 M50, it's on the temperature gauge. In modern cars, there's no need to let it idle to warm up. That just wastes fuel. Do what BMW says: drive gently until the WARM UP indication disappears.

[Three Stents]

and never use straight anti-freeze.....or you may/will need a new engine......I learned the hard way way

[ero187]

Originally Posted by Efthreeoh

The engineers who write the technical sections of the owner's manual...

Yep, the same one that say change your oil every 15,000 miles and transmission fluid is lifetime.

[Efthreeoh]

Originally Posted by ero187

Yep, the same one that say change your oil every 15,000 miles and transmission fluid is lifetime.

Actually, the same BMW engineers that ingeniously use a physical oil contamination sensor in the lubrication system to extend the oil change interval requirements while remaining within safe intervals. And if one reads the owner's manual, automatic transmission fluid is not lifetime, but rather 100,000-mile change intervals (for the E90 at least).

That's why it's called engineering. Mechanical engineering science, materials engineering science and chemical engineering science all improve the breed.

[Efthreeoh]

Originally Posted by zx10guy

Hate to be a broken record with how BMW Motorrad better handles things such as this.

With my 2022 S1000RR, on cold start, the RPMs are limited I forget what the starting ceiling RPM is. As the engine warms up, the DME for the bike begins to raise the rev limiter until the engine reaches optimal running temperature where you get full red line.

Jealous; I wish BMW fitted the K1600 with such a system. I just follow BMW's old-school method from my E30 days.

[ero187]

Originally Posted by Efthreeoh

Actually, the same BMW engineers that ingeniously use a physical oil contamination sensor in the lubrication system to extend the oil change interval requirements while remaining within safe intervals. And if one reads the owner's manual, automatic transmission fluid is not lifetime, but rather 100,000-mile change intervals (for the E90 at least).

That's why it's called engineering. Mechanical engineering science, materials engineering science and chemical engineering science all improve the breed.

[Ohio Enthusiast]

Originally Posted by ero187

Yep, the same one that say change your oil every 15,000 miles and transmission fluid is lifetime.

If you ever worked as a technical worker in a large company you'd know that the pure technical considerations are only a small part of the decisions that go into every little thing about the product. It may very well have been that the engineers recommended shorter intervals and following ZF's recommended trans fluid replacement, but then marketing or product decided that advertising lower maintenance cost would sell more cars.

This is the same as designing the car for ease of manufacturing rather than ease of servicing, or the myriad of other compromises that need to be taken when building a complex product.

[Efthreeoh]

Originally Posted by ero187

Here's my OCI for my E90... LOL:



You have supposition. I have real data.

[ero187]

Originally Posted by Efthreeoh

Here's my OCI for my E90... LOL:

Attachment 3967992

You have supposition. I have real data.

Ok, do you want a sticker?? If you read my original response I was agreeing with the OP about warming the car up before driving off. When I said " Who really knows" it was a figure of speech. Notice there is no question mark so no question to be answered by your smart response of "the engineers..." Yeah, we know that. You can stick to whatever oil change interval you want I'll stick to my 3,000 again because I just feel better about it like warming the car up before driving off.

[philpose1]

No need to idle it to warm up. BMWs are designed to warm up faster by driving gently for the first few minutes. Just keep RPMs low until oil temp comes up and you’re good.