Manual: No warm up

[Shadow277]

I read the manual and it says NOT to warm.up the vehicle. Just start driving. Why would Ford Engineers advise this? I am so used to warming up engines before driving. I mean, I'll still let it idle for a few seconds to have parts lubricated. I won't rev it past 3k or accelerate even mildly until it warms up to normal temperatures. I noticed that I cannot use 5th gear until the temp gauge moved a tad.

Does anyone have insight on those two things I mentioned?

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[Andy13186]

Driving the vehicle is warming up the vehicle, just dont drive hard or go over 3k like you said. Its not just the engine that needs to get warmed up but everything does, transmission, suspension , tires etc, and those dont warm up unless you are driving.

 

[EFI]

Why would Ford Engineers advise this?

Because it's not needed and it simply wastes fuel. Doing what you mentioned is perfectly fine.

I noticed that I cannot use 5th gear until the temp gauge moved a tad.

What do you mean you can't use 5th gear? What happens when you try to shift into 5th when it's cold?

 

[americanv8]

Modern cars haven't needed any kind of warm up for some time now since carburetors are no longer in use.

 

[Balr14]

This tends to vary by manufacturer and car age, but modern fuel injection engines require a few seconds to stabilize fuel/air mixtures and get temperatures above 40F. Beyond that, there is nothing to be gained by letting the engine warm up while sitting. It just wastes fuel. The car will warm up faster moving. In theory, you should not have to limit rpms while driving. But, in actual practice, pistons and blocks do not expand at the same rate, so higher rpms before engine and oil temperature have reached optimum levels can result in piston ring wear, or bore scoring or seizure, in extreme cases. I have seen Dodge and Chevy V8s with well over 100k miles that exhibit moderate bore scoring, with little effect. But, on horizontally opposed engines it can be serious.

 

[Qcman17]

When its a bit colder outside like right now I'll hit the autostart maybe a minute or two before I get in the car & then drive it fairly gently until the oil temp touches the low end of the normal range. But whether it runs for a little bit or not really doesn't matter in the big scheme of things either.

 

[kz]

I read the manual and it says NOT to warm.up the vehicle. Just start driving. Why would Ford Engineers advise this? I am so used to warming up engines before driving. I mean, I'll still let it idle for a few seconds to have parts lubricated. I won't rev it past 3k or accelerate even mildly until it warms up to normal temperatures. I noticed that I cannot use 5th gear until the temp gauge moved a tad.

Does anyone have insight on those two things I mentioned?

This way you are running your engine at sub-optimal clearances at longer time that you would have if you have driven it (which would warm it up quicker).

 

[Shadow277]

Because it's not needed and it simply wastes fuel. Doing what you mentioned is perfectly fine.



What do you mean you can't use 5th gear? What happens when you try to shift into 5th when it's cold?

I mean, I can. I may hear a zipping whiney sound as the shifter passes through the gates. I only have a mile commute so I only go about 45mph.

 

[MikeHTally]

Start it up and go. It'll warm up faster moving than sitting. Engines haven't needed "warm-up" for decades.

 

[rocky5517]

It took me long time to believe that ( coming from a 67 Riviera) new cars don't need a warmup. I still let it run for a minute , because when I pull out of my street I have an uphill climb. I did notice that the trans takes a long time to heat up- maybe 10 minutes of average driving. So no hard charging for the first 10-15 minutes

 

[TunedN]

I've read there are more issues with valve buildup if you don't let it warm up before going over 3k RPMs unless you have a catch can. The oil pressure is high until it warms up on these cars. Install a catch can, then let it warm up under 3k while driving, then rip it.

 

[kz]

I've read there are more issues with valve buildup if you don't let it warm up before going over 3k RPMs unless you have a catch can. The oil pressure is high until it warms up on these cars. Install a catch can, then let it warm up under 3k while driving, then rip it.

This makes no sense. Oil pressure is directly related to engine rpm since the pump is driven off the engine. Yes - it is higher during cold start procedure vs. warm start but that lasts a minute or so and only matters at idle.

 

[Vlad Soare]

I read the manual and it says NOT to warm.up the vehicle.

And yet they give us a remote start option. Go figure...

 

[atomicpunk]

Need at least a minute for the heated seat to warm up before I cheek the seat.

 

[13GetThere]

Gee, I let mine warm up for a couple of minutes until the tick goes away. The tick usually goes away before I check the tire pressure monitor, and get all my settings set. I still haven't finished break in period, but driving season is close.

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