Warm-Up proceedure?

[jtopiso_imp]

quick article about oil. not driven by environmental guidelines.

https://www.hotrod.com/articles/engine-oil-temperature/



Quote:as in idle the motor would need much longer to warm up the oil, thus the time of extra wear out would be prolonged.
and THATS exactly why they have a fast idle protocol.

I mean, not like i'm an engineer or anything....

and THATS exactly why they have a fast idle protocol.

I mean, not like i'm an engineer or anything....
So you are saying that a fast idle is a good thing for warm up, but a smooth drive is not. So 1100rpm is bad when cold. 2000 rpm with minimum load is bad when cold, and 1300rpm is good when cold.

Even that on the honda handbook (at least on mine) says nothing about letting it idle for a few minutes when cold, and on every modern vehicle (car or bike) handbook I've seen, they state not to let it idle and recommend to drive right away.

For me, the need to idle for warm-up is something from the past. With new oils and new manufacturing technology (much better materials, coatiings and tolerances, for example), I think it is pretty much useless as best.

btw.

I thought at least today's cars have 2 cooling water circuits, a small inner one for faster heating of the most important points and then a larger outer one

They have one circuit, but with a bypass regulated by a thermostatic valve which allows the water to by-pass the water cooler (radiator).

https://images.cdn.circlesix.co/image/1/...7a8f8d.jpg