Am I the only one that does this?

[LKG]

I did for about the first 2 years I had my Dodge diesel. That was 20 years and almost 300K miles ago. I should probably start doing that again.

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[jellis4148]

I just use the app and start it about 10 minutes before I leave. Regardless of outside temp the water is well over 100 and so is the oil. I like to wait till both are over 100 before I take off, and I still try to keep the RPM's low till it is fully warm. Yes, I pay to keep the XM guardian and the app.

 

[Tupi77]

Yep, same here. I start it up and let it idle initially until 40C/100F oil temperature. Then I drive slowly and allowing the engine to run smoothly no more than 1500RPM. If I feel that second or third gear not shifting, I will manually shift to continue operating the engine smoothly without HiGH reving.

 

[metz31]

Remote start and wait for the truck to warm up....seems like common sense for any vehicle in the winter. Been doing it since I was a kid and I was thee remote starter!

Besides who in the heck wants to be freezing and driving a car...sounds stupid.

 

[AZ Hella]

Me, I have a 6 speed so, I'm always manually shifting. I keep an eye on oil temp no matter how cold it is outside. Once the oil hits 170 degrees, I let err rip if I feel like banging the gears.

 

[zouch]

6-speed? then you don’t have the Diesel the OP was talking about.

being Compression Ignition, Diesels don’t warm up well at an idle.
driving gently once you have oil pressure until you have something like nominal Engine and Trans temps seems to be a reasonable practice, because it’s not just the engine that needs to be warmed up; it’s the whole driveline.

Me, I have a 6 speed so, I'm always manually shifting. I keep an eye on oil temp no matter how cold it is outside. Once the oil hits 170 degrees, I let err rip if I feel like banging the gears.

 

[cj7ox]

I don't consciously follow the OP's method, but do drive easy for the first 10-15 minutes. Remote start if colder than 40*. Leaving my neighborhood, I immediately hit a stoplight that is always red...so that helps. LOL

 

[Screen Protech]

Most of the engines wear will be from the first 10-15 minutes after every cold start because the oil is too thick to travel and properly coat the whole engine. When I worked at Cummins, they had tests showing as much as 80% of wear over an engine's lifetime, came from this crucial period of time.

Because of this, I like to keep my rpms as low as possible until the engine oil is at least 175F, however, I am not going to let it sit and idle for 15 minutes every time I start it from a cold start. I find that the stock trans tuning holds 2nd and 3rd gear way to long for a diesel, getting the rpms well past 2,000 even with normal acceleration which makes me cringe on cold oil.

To keep this from happening, I will manually shift as soon as the trans will let me, which is generally slightly above 1,500 rpm, to keep rpms as low as possible. After the oil gets past 175F, then I put it in auto.

Am I the only one that does this?

That's good to know about the engine damage happening at the time interval. Is it bad to let it idle until operating temperature or its just something that you don't do personally?

 

[Wrangler man]

EcoDiesel owners manual says: Engine Warm-Up
Avoid full throttle operation when the engine is
cold. When starting a cold engine, bring the
engine up to operating speed slowly to allow the
oil pressure to stabilize as the engine warms up.
If temperatures are below 32°F (0°C), operate
the engine at moderate speeds for five minutes
before full loads are applied

 

[Old Dogger]

With any engine, it is bad to start it up when cold, and then WOT it on the highway, before it warms up.

 

[Motoristx]

I typically roll through the neighborhood going slow, but I don't wait... I don't make it to the highway for a few minutes and its warm enough by the.

 

[UncleJimmy]

Most of the engines wear will be from the first 10-15 minutes after every cold start because the oil is too thick to travel and properly coat the whole engine. When I worked at Cummins, they had tests showing as much as 80% of wear over an engine's lifetime, came from this crucial period of time.

Because of this, I like to keep my rpms as low as possible until the engine oil is at least 175F, however, I am not going to let it sit and idle for 15 minutes every time I start it from a cold start. I find that the stock trans tuning holds 2nd and 3rd gear way to long for a diesel, getting the rpms well past 2,000 even with normal acceleration which makes me cringe on cold oil.

To keep this from happening, I will manually shift as soon as the trans will let me, which is generally slightly above 1,500 rpm, to keep rpms as low as possible. After the oil gets past 175F, then I put it in auto.

Am I the only one that does this?

This is what is called mechanical sympathy and you have it.

Yea I do the same thing for the same reasons, although I have the 3.6. I also use 0w-40. Same reasoning applies to trans.

 

[Borderland]

This should explain the guesswork. Thoroughly tested cold start warm up versus start and drive.

 

[ALeeL]

This should explain the guesswork. Thoroughly tested cold start warm up versus start and drive.

This is exactly why I said I am not going to let it sit and idle in my initial post We did some similar tests when i was at Cummins and is why they always recommended shorter oil change intervals than standard for duty cycles with a lot of idle time or short trips.

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