Is it necessary to bring an engine to runnig temp in oder to change the oil?

 

I'm not rocket scientist with these things yet, but I believe getting the oil up to op temp reduces the viscosity, which will allow more of the old to drain out. I think its the same with changing auto oil as well. Hope this helps.

 

When oil is changed hot it will suspend more of corrosives and particulate contaminants allowing them to be flushed out with the change. When cold, some of that garbage sits on the bottom of your tank or engine and stays in the engine. Plus the old oil drains out of the top end of the motor faster and easier.

 

Well, there is a difference in bringing it up to full operating temps and just getting it hot enough to drain it out quickly and thoroughly. I run the engine for 5 minutes at idle, then turn it off, wait 10 minutes and start my oil change.I have always done this, and had no issues. I personally don't want to scald my hand when changing the oil and it is at 220 degrees. If you do run the bike up to full operating temps, you will need to wait at least 45 minutes before you can change it and that brings the temp back down to what I do, so 6 in one hand and a 1/2 dozen in the other. You will never get every little drop out, so as long as you do your best, you are okay in my book.

 

Thanx guy. I knew the answer but was looking for the logic behind it. Also looking for an easy way out.

 

Before I change the fluids,I ride it till it gets to normal operating temp.Then let the bike sit for at least 20min. or so.The fluids will drain easier and more completewhen warm/hot.