do you recommend warming up a car if you are going to be at 70 mph. meaning that i literally live hundreds of feet from the freeway and ill be at 70mph with a cold engine. i know you dont believe in an engine warm up but is going freeway speed on a cold engine okay {black}:idontknow:
It's your choice but I always get my vehicles to operating temperature before putting that kind of load on them and I don't care what anybody says about it.
From a physics perspective, you get more wear on the engine at cold temperatures (granted modern oils have greatly reduced this). Engines run most efficiently when they are warm and the faster you can get them warm, the less wear and more efficient they will operate. On the same note, the hotter an engine can run, the better (within reason of course). Letting an engine just idle (say in the driveway) will take much longer to get the engine up to operating temperature than just getting in it and driving. Therefore I say just get in and go....you will not harm and in theory do less harm. Hope this helps.
It DOES NOT.
Well Doc, I live 6/10 of a mile from the on ramp and have driven my Honda this way for 160,000 miles. Engine has very little wear and I have had no issues. The heater blows nice and warm within the first mile of driving down the interstate at 70MPH. If you think warming up the engine by idling helps then go for it but I will tell you that i don't think it is necessary. How do you warm up the wheel bearings or a manual transmission? The answer is "you don't" and they work in cold conditions and get warm once they are moving. Friction is amazing and warms things up quite quickly. Rub your hands together very slowly and they will eventually start to get warm. Rub them quite quickly and they get warm fast. We can agree do disagree but there is no need to be rude.
The guy said he's on the highway within a few hundred feet of starting up. That means he's doing 70mph before the oil has had a chance to warm up. At that speed, the engine is working fairly hard and oscillating very fast (at least for short periods of time before gear shifts), and the oil isn't able to do its job properly yet. It's not flowing like it should, and it hasn't reached operating viscosity. That means hydraulic systems like VVT are also not operating nominally. This is in contrast to idling which is low-load, low-speed, low-wear.
Yes, the engine will warm up quickly on the highway, but until that time it's cold and causing increased wear.
It is not good for a cold engine to suddenly get to 70mph. Try to get it warmed up before hit the highway.
I would warm it up.
You could put a heater under the engine. Thats what i do. A small air heater i plug it in on extension. But only when is below 0 deg.
At over just idle for 2 min is enough. These new oils full synthetic flow very well.
